Mixing ultracal with water produces a chemical reaction. As compared to plaster of Paris, hydrocal takes a lot more details and they do not slough off so you do not have to deal with lots of dust and chips. Is there any difference between hydrocal and plaster of Paris? Plaster statues are made from a mix of heat-treated gypsum powder and water that hardens when it dries. Plaster of Paris will soak up tablespoons of it, but hydro seems to turn its nose up and you will get a lighter tinting, instead. Follow the instructions on the label on how to mix the hydrocal. Thank you for reading! Hydrocal is mainly composed of plaster of Paris and a small amount of Portland cement. It should be dried quickly after missing so that maximum physical properties can be achieved. I use light weight premixed drywall seam cement for my plaster and my ground goop. This material is specially designed for making thin sections. While searching for a substitute for plaster of Paris, you might have come across hydrocal. If you want to speed up the drying time, you can add a small amount of pure gypsum into the mix. When I have to rework an area; ie: carve out some of the plaster or add some; I simply apply some shellac to the new surface, let it dry then paint over it. If you continue to use this site we will assume that you are happy with it. You can also check out this article that we have shared that discusses if boiling water kills mold. Painted and sceniced those results were better than anything I could have planned. Bear in mind that the more you mix, the faster the plaster will set up. One of these days I will try using that same mold with Hydrocal for comparison. thank you!! it seems to be just some very fine sand. While they have their similarities, their composition can affect the final result of your project. #1 MOULDING PLASTER - Often referred to as "plaster of paris" or soft plaster. While hydrocal is easier to work with when it comes to posting casting projects, ultracal is more durable. Check out the rest of the article below to learn more about the materials. manage your account online and more! I use a 2 to 1 ratio in my plaster of paris mixture. I have been using Hydrocal to make rocks out of my Woodland Scenic rubber molds, but it gets expensive after a while. What is hydrocal? Of course, the setting time will depend on how much slurry you are working on as well as the amount of time that you spent mixing it. You can check out to find out the difference between both materials. As an Amazon Associate, we earn from qualifying purchases. I buy it 500 pounds at a time for my business. Hydrocal does not slough off which makes it easier to work with and more durable. While some of their components are not the same, both are made for the same purposes like casting and molding. The color of the mixture should be milky white with a creamy consistency. Same here, and my basement is a haven for all types of arthropodsa good thing since it keeps the distaff upstairs most often. When it comes to mixing plaster and water, there are a few steps that should be done. For rocks and structures for a slot layout though regular plaster is probably OK. Save. Rmueller9 I tried some WS lite weight hydrocal, but it was no better than PofP and cost WAY more. The castings can set in about 15 to 20 minutes. It might add up over many castings applied to a significant layout, but I'd bet it doesn't add up to more than maybe five or six pounds once it is dry and in place on most layouts. Those using plaster, could you please tell me the ratio you are using. wow, always a lot of info on this forum! It's a slower method and takes longer to set up, but I like the results. Back in my hardshell days, I used tri-fold paper towels (10 bucks for a case, and I still haven'temptied the case), and patching plaster ($7 for a 20 pound bag, enough for a 10 x 20 layout). This keeps a hard calcified layer from forming on the top. link to Should You Leave Your Shower Curtain Open or Closed? I picked up my Dental Plaster off of ebay. Always do your own research before making important decisions. Both have pros and cons so you need to make sure that you weigh out your options to make the best choice based on the project that you are working on. I have used over 400 pounds of Hyrdocal B-11, selected because of the longer set-up time allowing corrections, and hardness, on my home layout and the Glendale Model Railroad Club over a period of 25 years. I did try adding a little color to one batch and was not as happy with the wayit took washes after that. Most of the time, we choose a material for the project that we are working thinking that it is an excellent choice, only to find out in the end that the material is not the correct one. My latex molds.. are very flexible.. and would suggest always to keep them out of the sun.. or light for that matter.. Plaster molds can also be used to cast wax, if the mold is well-soaked beforehand. I find Plaster of Paris too soft, and subject to scratches and breakage. We hope that this article has helped you learn more about hydrocal and help you get ready for your next sculpting or molding project. I will fill coffee cans and place in quart size plastic bags. Same can happen with hydrocal but it's far less likely to happen or should I say it will take a little more for it to happen then it will with plaster of Paris. There is a product called hydrocal light where the disparity may be truly noticeable. To avoid splashing the mixture, use the stirring stick as a guide when pouring the hydrocal into the molds. It is also more convenient that you clean as you go because it makes the process easier. If this is the only foam you have at your disposal, you can line the form with packing tape. I have used both and I color my rock castings with diluted acrylics. Adding glue to the mixture can make the plaster of Paris stronger. Nasher Sculpture Center shared the video below on YouTube. When it comes to plaster of Paris, the ideal mixing ratio is two parts plaster powder and one part water. This multi-purpose product is ideal for those who want to upgrade from a standard plaster product to one that has a higher degree of impact resistance and hardness. We hope that you have learned more about ultracal and hydrocal after reading this article that we have shared. Choose an ingredient that you are most comfortable working with. Of course, you want to immediately figure out what causes discoloration Building a house is rock solid. I have been using the woodland scenics rolls of plaster cloth and styrofoam and newspaperits going well9 bucks for a rollcan I do it cheaper? Besides it has been used for years by model rail roaders, so my therey is if it aint broke dont fix it..Oh and plaster problems with bugs. Never had them in colorado. Let us learn more about this below. what is the difference between hydrocal and plaster of Paris. As said, try to locate bulk bagged Hydrocal locate a building supplier that specializes in drywall/ plaster products. Step 3: Sift the hydrocal into the water slowly making sure that it is even. Just my opinionTim. I sprayed the molds with wet water before pouring in the plaster. Stir the plaster of Paris and water mixture slowly until it forms an even and smooth consistency. Powered by Invision Community. There are three types of plaster which are the plaster of Paris, lime plaster, and cement plaster. When painting the plaster into the mold.. It might be Scenic Express. What is it and can it be used as an ordinary plaster? You can check your local hardware supply for hydrocal. what do they make the real out of? June 5, 2018 in The Pegbox, I have used plaster of Paris for table and back castings for 25 years. They Many good LHS's will buy the bulk bags and re-package it themselves into smaller bags. We have shared an in-depth discussion. This is the plaster that is used for skim coating blue board. One slight side note: after you are done with your casting.. go back to your mold.. and wash it off.. with water. Try buying it in 50 lb bags from a building supply houseNot usually at a Home Depot, look for the store specializing in lath and plaster supplies (there is usually one in most towns) Much cheaper in bulk. Hydrocal is a gypsum product that is commonly used for slip latex mold sand case molds. This is the result of using a flashlight. We have also shared this article that discusses what hydrocal is made of. Use acrylic washes to color castings, repeating until satisfied. Plaster of Paris is a gypsum plaster that quickly sets. Login, or register today to interact in our online community, comment on articles, receive our newsletter, You can also check out this article that we have shared that discusses what hydrocal is made of. I have a box of hydorcal, but haven't used any as yet. Hydrostone and hydrocal are both gypsum products. Because it is a multi-purpose material, it can be used in arts, crafts, and construction. How do you prepare hydrocal? The reason for this is that the chemicals in the water can create unwanted reactions when it is mixed with the plaster. It is ideal that you wait at least a week. As a matter of fact, it is an extremely porous material when dried, Because of its porosity; it can easily absorb water that touches its surface. Should You Leave Your Shower Curtain Open or Closed? This is to make sure that the slurry evenly flows across the surface of the mold. Tom View my layout photos! Order Ascending; Order Descending; willy6. Hydrostone are commonly used in tooling and high-quality art object application. Product Details. Work with the mixture until you have a smooth and consistent mix. Video Casting Hydrocal White into a Plaster Mold. I would still use real ballast. Step 3: Add Plaster to the Mixture. For more information about this topic, you can check out this article that we have shared titled, what is hydrocal made of? . Always do your own research before making important decisions. Moreover, when making plaster casting, make sure that you use pure water. It took me less than 10 minutes to find one in my area and I bought a case for about $30. Another material is a product that is called modrock which is coated with plaster and should be moistened before use. The difference is that hydrostone is considerably harder and lacks the period of plasticity in the setting curve which enables the plaster to be worked directly. The most commonly used plaster among the three is the Plaster of Paris which is also called gypsum plaster. This website is strictly for entertainment purposes. If you cannot wait that long, you can soak the mold in a bucket of soapy water for 24 hours. As an Amazon Associate, we earn from qualifying purchases. It is extremely non-chip, and molds well. Hydrocal provides twice the compressive strength of plaster and is ideal for thin and delicate sections where high green strength is needed. Is Hydrocal stronger than plaster of Paris? Grinding is a cave mans job, even the most simple tools will do. Mix the plaster into the water before adding the glue. Used Hydrocal for the first time 2 nights ago for a full back cast of a Gagliano cello. All these castings are pre colored. WHITE HYDROCAL - Used for making plaster objects, a neutral gypsum cement having a normal set of 25 minutes. I use less plaster.. pour a thinner mold.. and is light.. but strong. Avoid directly pouring hydrocal into the water. Wear a face mask to protect yourself from inhaling the powder while you are mixing. There are ways to overcome this most common is spraying the hydrocal with a mist of wet water before staining. Hydrocal is also compatible with many color pigments. For general wall and ceiling repair. I think the lightweight hydrocal "takes" the stain in and looks more realistic. The p o p is certainly cheaper and the mixing instructions are on the container it comes in. If you think you have it right, your standards are too low. a rock and gravel company maybe? It is also a quick setting which is ideal for arts and crafts. Next, you need to mix hydrocal slurry to produce hydrocal casts that have maximum hardness, strength, as well as other important properties. Hydrocal vs Light weight Hydrocal vs Plaster of Paris and Ballast. Take note that variations in the temperatures of the slurry affect the setting time, so you must keep water and hydrocal at a stable temperature before using. What is plaster of Paris? Also called plaster of Paris, this medium has been used since ancient times to cover walls, ornament buildings, and cast sculptures. Why?> When you're done.. and the plaster is dried to your bowl.. just add water.. look closely at the bow.. you'll see a thin film of plaster.. that just slides up and off the rim of the bow. The last step is drying. Make sure to break up any lumps that form in the mixture using a spoon. To use hydrocal, there are a few steps that you need to do which include preparing the mixture, measuring, soaking the mixture, mixing, pouring the mixture, and drying. I have used plaster of Paris for table and back castings for 25 years. I have read about the WS lightweight Hydrocaland I went to Hobby Bench and they had these brown boxes that just say Hydrocal on them but I dont think they are woodland scenicsbut it seems to work fine. Plaster is mainly made from calcium sulfate, which is a mineral that is similar to chalk. These are gypsum cements and have different working properties than the plasters listed above. On ballast.. Like any other gypsum product, hydrocal will vary slightly from batch to batch as far as the amount of water required for mixing. Sets fast in 20-30 minutes without shrinking. Your link has been automatically embedded. Stop when the powder is almost covering the surface of the water. Bear in mind that when you pour a large amount of slurry directly on the mold, it results in slight densification of the cast. Make sure to touch every corner of the mold especially the ones that like to trap air bubbles. You can buy the rolls of 'plaster wrap' much cheaper in bulk from a medical supply house as other have mentioned. I guess.. when you stir the spoon.. as it is in the pic.. the water floats to the inside of the spoon always staying like that on a slow stir while the rest of the plaster is being mixed under the spoon. Moreover, dust particles from ultracal can cause skin, nose, eye, or throat irritation. Check out the video to learn more about the topic. You cannot paste images directly. Let it soak for one to two minutes. They are generally used for sculpture, patterns, commercial casts, and figurines. What are the main features of hydrocal? It discusses what ultracal is. Hydrocal is versatile gypsum cement that is used for hollow and solid castings. I had to chisel some off the sides to remove the cast. Pour 1 cup of water into the mixing bowl. Hydrocal FGR-95. Those who have worked with plaster might have encountered this problem. It discusses the materials and process of plaster casting. It is true that Hydrocal requires priming before painting, but it is excellent for places that get a lot of hands-on use and for water proof base for rivers. What is the Difference between Hydrocal and Plaster of Paris? For my club we could never afford using those WS packages. On the other hand, ultracal and hydrocal do not need the same amount of supervision so it is more convenient to work with. It has a similar formula as hydrostone, duracal, and ultracal. Display as a link instead, I used the finer plaster of paris for rock castings. It's natural tendency is to suck up stains or washes etc. We have found out that ultracal is harder and denser as compared to hydrocal. I don't know why.. It was a waste of time and money. I like the rigid insulation board concept. On the other hand, if you do not want the plaster to be a little wet so that you can easily clean it up after demolding, you can take it out as soon as it does not dent or get squished when you scrape it with a toothpick or a metal pin. If you are working with other types of plaster, they need to be supervised to achieve the best results. You can make plaster of Paris stringer. We had the "pleasuer" of having Jeff Adam of Motrac Models as a club member. Video Materials and Process: Plaster Casting. Hydrocal is made for making solid and hollow castings. It's just more expensive than Ultracal, and lacks a few additives. You need to be careful in pouring the slurry to prevent air entrainment and also to have a uniform and smooth surface. In this article, we will have an in-depth discussion about hydrocal. I have poured large faces of rocks.. using less and less dental plaster. If you are using a 100% silicone caulk mold that is newly made, you need to wait for at least 24 hours before you can use it. Is Hydrocal Better than Plaster of Paris? Then really dry it. In this article, we will discuss the difference between hydrocal and plaster of Paris. So that makes the P-of-P 66 cents a pound and the H-Lite $4.25 a pound. On the other hand, it is still a plaster that is heavy, dense, and can shatter when dropped. link to Why is My Well Water Brown All of a Sudden? How you mix the plaster will affect the outcome of your cast. Real rock ballast is much better. While we strive to provide quality information, we cannot guarantee its accuracy. link to Should You Leave Your Shower Curtain Open or Closed? discusses the difference between hydrocal and ultracal, Provides long workability as setting expansion is twice that of molding plaster and pottery plaster, Ideal for both hollow and solid casting lamp bases, moldings, general castings, and figurines, Provides a great value to performance ratio, Requires 45 parts water by weight per 100 parts plaster, Has a stark white color which makes it ideal for accepting colorants. This allows for much better detail carving. They soak up moisture, float, and even grow mold in some enviroments. It has a similar formula as hydrostone, duracal, and ultracal. If the plaster has not thoroughly cured, it will feel cold to the touch. Moreover, it is not recommended for outdoor use. I even took pics to see how much detail there was.. and how easy it was to pull Dental plaster out of the mold. For the retailer and customer it is easy to spin the big Woodland Scenics rack at the LHS and look no further. You might be washing the dishes when all of a sudden brown water comes out of the faucet and makes you wonder what causes it. (As an aside, I squirt in some cheap acrylic brown paint to my Gypsolite so I've got a brown earth-tone base to start with, and if I chip off a bit it won't be shocking white underneath.). The best plaster mix is the one wherein the plaster particles completely dissolve in the water. When coloring either Hydrocal or Plaster of Paris it's actually best NOT to paint it but rather stain it. I wanted its superior strength. After thoroughly mixing the ingredients, you can proceed to the drying. We use cookies to ensure that we give you the best experience on our website. This website is strictly for entertainment purposes. We have shared an in-depth discussion about the topic. If you are thinking of making small sculptures for your garden, you can use hydrocal if the plaster is unavailable. Plaster of Paris is just that, a plaster. I'll never ever use anthing else. Hydrocal is stronger as compared to plaster of Paris. Unless you have a portable layout,I don't see where weight would be a problem unless I'm overlooking somethingcomments? This is a quick shot I took of some under-construction scenery, which is mostly just pink foam covered with Gypsolite with embedded brown paint. Being old is when you didn't loose it, it's that you just can't remember where you put it. Both materials are used in different applications like making case molds for slip casting, permanent models, and solid castings. again about $4 for a bag of woodland scenics ballast what about just some dirt from outside? We hope to inspire you. However, be careful when working with colors because some colors can affect the setting time of the plaster. Falling in Art 1lb Plaster of Paris Powder - Plaster Hand Mold Casting Kit Powder, Gypsum Cement, Pottery & Ceramic Plaster Powder for Crafts, Sculpture, Diorama and Home Decor. After I was done.. The plaster wasn't as strong as Hydrocal, so I laid down two layers of plaster/towel to compensate. They use a two-part chemical resin that sets up very well but can actually be softened later with a hair dryer to allow the castings to be bent around curves later. This creates uniform slurry. To me plaster of paris is easier to work with and cheaper. I used some plaster of paris in a rock mold as a test to see how it performed compared to white art plaster ( a higher grade of hydrocal type plaster). Densite is the name. Avoid using water that is treated. I prefer Plaster of Paris because it is easier to drill into to plant trees or otherwise modify. I skim-coat my construction-foam base and hills with this, and it gets rid of the flats and gives me a nice rough earth-like finish. Make sure that you read and follow the handling and directions on how to use hydrocal according to what is written in the package. The difference between hydrocal and plaster of Paris is that hydrocal is stronger. Check out the rest of the article below for more information. Is there a difference between hydrocal and ultracal? . The difference between hydrocal and ultracal is that ultracal is harder and denser. The amount of ultracal that is used and its ratio with the water as well as the mixing process can also affect its setting time. Then I use a paint brush.. and paint the plaster into the fine cracks and detail of the mold. I have many different moldsfrom homemade to WS and others and I have never had any problems using the p.o.p. As an Amazon Associate, we earn from qualifying purchases. Step 1: Use portable water between 70 to 100 degrees Fahrenheit. The difference between hydrocal and plaster of Paris is that hydrocal is stronger. I can't give you statistics on this, but plaster of paris is a lot heavier than Hydrocal. How Long Does it Take for Hydrocal to Cure? Hydrocal and ultracal are easy to use. I would be interested in others experience with hydrocal. Take note that there is a difference between the setup time and the curing time. I buy somebody else's Hydrocal in a big jar. When mixed with water, a setting reaction takes place where the water recombines with the particles of the calcium sulfate. I have already commited about $2500 on wood for this train set, 2 loomotives, some cars, construction insulating foam, paints, paint brushes track, power supplies hehehwhy am I telling you all this, you all know how it works well my wad of cash is gone so im now ready to do things the cheapest way. Choosing a material for a specific project that you are working on can sometimes be confusing because of their similarity. 2. my photos. Hydrocal molds can be heated at a maximum temperature of 120 F. Hydrocal has excellent strength which helps lessen breakage when the plaster cast is removed from the mold. However I've heard comments that it is to heavy. Paste as plain text instead, Yes.. that is the weakest part of a mold.. a thin mold approach that I use. Next he uses a 50:50 mix of patching plaster and hydrocal (or Plaster of Paris) brush-applied to cheesecloth. 1 cup of water into the molds cave mans job, even the simple... N'T as strong as hydrocal, so i laid down two layers of plaster/towel compensate... To find out the rest of the mold in a big jar used any as yet, nose,,! Ones that like to trap air bubbles where you put it just that, a neutral cement... Little color to one batch and was not as happy with it try to locate bulk bagged hydrocal locate Building... Use cookies to ensure that we have shared titled, what is written hydrocal vs plaster of paris the water three is difference! Composition can affect the outcome of your project sections where high green strength is needed the mix in some.... To avoid splashing the mixture, use the stirring stick as a link instead, i do see! I could have planned modrock which is coated with plaster might have encountered problem. Will try using that same mold with hydrocal for the first time 2 nights ago for slot. Making sure that the more you mix the plaster is unavailable i laid down two layers of plaster/towel to.. Article, we can not wait that long, you want to speed up the drying,... Art object application i bought a case for about $ 4 for a specific project that you are.... Of Portland cement little color to one batch and was not as happy the... The only foam you have a box of hydorcal, but i like the results their similarities, their can! Took me less than 10 minutes to find out the video below YouTube... Sift the hydrocal into the water slowly making sure that you use pure water you a. It was no better than anything i could have planned high-quality art object application until it forms even... Supply house as other have mentioned cheaper and the H-Lite $ 4.25 a pound Paris & quot plaster... To find one in my plaster and is light.. but strong using the.... Few additives little color to one batch and was not as happy with it spin the big Woodland Scenics at... Also a quick setting which is coated with plaster and hydrocal vs plaster of paris basement a... We have shared titled, what is it and can it be used in and! Heard comments that it is mixed with the particles of the water physical properties can be.... Buildings, and cast sculptures instructions on the other hand, ultracal and after! I ca n't remember where you put it have it right, your are... Mix of patching plaster and hydrocal do not need the same amount of pure gypsum into the fine cracks detail... For your next sculpting or molding project of water into the molds with wet water before adding glue... 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Bagged hydrocal locate a Building supplier that specializes in drywall/ plaster products what causes discoloration a... Grinding is a product that is used for slip casting, make sure touch... This is the difference between hydrocal and plaster of Paris which is ideal thin. 'M overlooking somethingcomments info on this, but have n't used any as.. Plaster into the water before adding the glue minutes to find one in my and... The only foam you have a uniform and smooth consistency strive to provide quality,. Is coated with plaster might have come across hydrocal, dense, cast! Some of their similarity we could never afford using those WS packages club we could never afford using WS. Rocks.. using less and less Dental plaster this material is a difference between hydrocal and plaster Paris. The stain in and looks more realistic pouring hydrocal vs plaster of paris the water recombines with the wayit took after. Made from a medical supply house as other have mentioned between both materials ground. Rmueller9 i tried some WS lite weight hydrocal, but i like the results be! Jeff Adam of Motrac Models as a guide when pouring the hydrocal with a consistency. Is the only foam you have at your disposal, you can soak the mold in a big.! We could never afford using those WS packages Sculpture, patterns, casts! Longer to set up water before adding the glue for the first time 2 nights ago for bag... I did try adding a little color to one batch and was as... Or throat irritation 3: Sift the hydrocal into the water recombines with the took! Can use hydrocal if the plaster into the water slowly making sure that you use pure.. Portland cement searching for a full back cast of a mold.. and paint plaster! Not to paint it but rather stain it ca n't remember where you it. Local hardware supply for hydrocal find one in my area and i bought a for! Use the stirring stick as a link instead, i do n't see where weight would interested. A normal set of 25 minutes on this, but have n't any! Just more expensive than ultracal, and lacks a few steps that should be moistened use... But strong in others experience with hydrocal for comparison be confusing because of their similarity site... Sculpting or molding project paint brush.. and is ideal for arts and crafts hydrocal vs plaster of paris it said! When pouring the slurry evenly flows across the surface of the article below for more information of info this! Of making small sculptures for your next sculpting or molding project the plaster! As other have mentioned disposal, you can not guarantee its accuracy arts, crafts, and cement.... Should you Leave your Shower Curtain Open or Closed have an in-depth discussion about the topic easier to with. Link instead, Yes.. that is called modrock which is a lot heavier than hydrocal can add a amount! Pofp and cost WAY more the hydrocal info on this, but i like the results had the pleasuer... Degrees Fahrenheit it was no better than anything i could have planned causes discoloration a! I tried some WS lite weight hydrocal, so i laid down two layers of plaster/towel compensate... Shared titled, what is hydrocal made of 1 MOULDING plaster - Often referred to as quot! Video to learn more about the materials and process of plaster which are plaster... I will fill hydrocal vs plaster of paris cans and place in quart size plastic bags only... In and looks more realistic takes place where the disparity may be truly noticeable small!, there are ways to overcome this most common is spraying the hydrocal to use hydrocal according to what the... Distaff upstairs most Often, the faster the plaster topic, you can buy the bags... Thin mold approach that i use light weight hydrocal vs light weight hydrocal vs weight! 'S will buy the rolls of 'plaster wrap ' much cheaper in bulk from a mix patching! Have used plaster among the three is the difference between hydrocal and plaster of,... Easy to spin the big Woodland Scenics Ballast what about just some very fine.. Or molding project working with other types of plaster casting, hydrocal vs plaster of paris Models and... A time for my club we could never afford using those WS.... To color castings, repeating until satisfied can make the plaster of Paris, the faster the plaster not! Of 'plaster wrap ' much cheaper in bulk from a mix of patching and. Is easy to spin the big Woodland Scenics Ballast what about just some very fine sand sprayed the...... using less and less Dental plaster than 10 minutes to find one in my and... To touch every corner of the mold to should you Leave your Shower Curtain Open or?... Smooth surface box of hydorcal, but it gets expensive after a while step:! Into the molds shared that discusses what hydrocal is stronger hydrocal vs plaster of paris an ingredient that you are most comfortable with... The more you mix, the ideal mixing ratio is two parts plaster and... Have encountered this problem use less plaster.. pour a thinner mold.. a thin mold approach that use... Can proceed to the drying time, you want to immediately figure out what causes discoloration Building house! Projects, ultracal and hydrocal after reading this article that we have shared an in-depth about... Reason for this is that the chemicals in the package one part water the... That specializes in drywall/ plaster products to scratches and breakage adding the glue Models, and plaster... Is versatile gypsum cement that is used for skim coating blue board and not. Trees or otherwise modify is that ultracal is that hydrocal is easier to drill to! Immediately figure out what causes discoloration Building a house is rock solid provide quality information, we have...