Some LHS's carry these lines, others you have to mail order from. Sets fast in 20-30 minutes without shrinking. If you want to use sand, you will need something very fine and it must have no magnetic material in it(that stuff gets sucked up into you engine's motor). Reading Company Technical & Historical Society http://www.readingrailroad.org/. Moreover, plaster of Paris is also mixed with lime putty to create plaster moldings where required. These characteristics are vital if you are making a long life scenery base. Now, I use premixed drywall mud, over foam for the base, but still useplaster of paris for rock castings. Hydrocal provides twice the compressive strength of plaster and is ideal for thin and delicate sections where high green strength is needed. For life-casting, alginate (seaweed-based gelatin) is used for a (negative) mold, and plaster is used as the positive casting material. 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. Ultracal is just plaster of paris (calcium sulfate Hemihydrate) with portland cement and crystalline silica added. Combining both ingredients cuts the setting time shorter. Use a mixing container that can fit the amount of mixture that you will make. Once you have measured the ingredients, you need to soak them. Pour 2 cups of plaster of Paris into the mixture. Those using plaster, could you please tell me the ratio you are using. It is the perfect choice for making a solid and hollow casting of figurines, general sculptures, and commercial casts. You can use this product to cast rocks or make your castings. Some would agree that closing the curtain after taking the shower is necessary to keep it dry while others Why is My Well Water Brown All of a Sudden? Others are a mix of production offerings and ones created by myself or club members. has a longer working time so in my dry environment, it works better for covering plaster cloth. I had mixed results with plaster of Paris, I assume because the various suppliers grades differ. Like ultracal and other gypsum material, it is used for casting sculptures for crafts, arts, and other projects. I'm also a hydrocal fan for plaster casting. Seal it first. During the process, it is ground up into a powder form and then heated. my photos. I've also used other home-center type plasters (any type that you mix with water) and I really can't say if any of the others were much better or worse than plaster of paris. When the drywall mud shrank back on itself , I gained some erosion channels and short narrow ravines randomly along the embankment. I have tried both. I would not use dirt(too much organic stuff in it). My latex molds.. are very flexible.. and would suggest always to keep them out of the sun.. or light for that matter.. How Long Does it Take for Hydrocal to Cure? Hydrocal cures to a very hard stone like surface, where Plaster of Paris stays very soft and almost chalky. We have shared an in-depth discussion about the topic. 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. It usually will only lightly tint. I have used plaster of paris in both WS and homemade molds and have had good results. Oftentimes, you purchase a material thinking that it is what you need, only to find out later on that it is a different one. One slight side note: after you are done with your casting.. go back to your mold.. and wash it off.. with water. Work with the mixture until you have a smooth and consistent mix. The pictures below are of a Hydrocal High Arched PRR prototype stone viaduct that I've been working on the past week or so. 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. Avoid directly pouring hydrocal into the water. | Guide for Beginners. This is the result of using a flashlight. link to Why is My Well Water Brown All of a Sudden? If you are thinking about using either two for your craft or building project, but do not know which one to choose, you can check out this article below for helpful tips and information. We have shared various methods that you can follow when making plaster at home. I have poured large faces of rocks.. using less and less dental plaster. What I like to do w/ that huge bag of Hydrcal is to rebag in smaller more managable amounts. Good luck. Mixing ultracal with water produces a chemical reaction. Hardens like a rock quickly. Step 3: Sift the hydrocal into the water slowly making sure that it is even. As an Amazon Associate, we earn from qualifying purchases. We have shared information that can help you eliminate mold in your home. Find out how to do this by reading the article that we have shared titled, how to make plaster of Paris stronger. I usePofP now only for rock castings. You need to slowly and evenly sift hydrocal into the water. Left it sitting on the edge of my work table. I stopped using much plaster cloth after I discovered foam scenery. Hydrocal doesn't take paint easily. Hmmmm. Otherwise, it will chip very easily. The first thing that you need to do is to prepare the mix. Check out the article to find out more about the differences between both materials. Step 1: Use portable water between 70 to 100 degrees Fahrenheit. We have also shared this article that discusses what hydrocal is made of. After it becomes partially dehydrated, it turns into calcium sulfate hemihydrate. The Sacrete liquid, and paint just doesn't work that well. You just need to experim,ent as to the water amount. As this happens, it changes from hemihydrate to dihydrate. The fact of the matter is if one were to make identical castings out of both materials the weight difference is not all that much, both weigh a ton! I use 2 parts plaster of paris to 1 part water. I am currently trying to get more familiar with tecstone. Check out the rest of the article below to learn more about the materials. It's a slower method and takes longer to set up, but I like the results. The reason for this is that the chemicals in the water can create unwanted reactions when it is mixed with the plaster. How do you prepare hydrocal? M. Many of the castings on our layout are his. Even though your plaster mix has been mixed correctly with no bubbles.. you can and will still get an impartial filling of the cracks and detail. Thicker batches will set faster and can be used for direct application to semi-hardened or bond hardened castings or for fill-in scenery. 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). I find Plaster of Paris too soft, and subject to scratches and breakage. Powered by Invision Community. a rock and gravel company maybe? I've also used Bragdon Foam with a Bragdon mold. As an Amazon Associate, we earn from qualifying purchases. Moreover, hydrocal is color white and has a setting expansion that is twice that of a molding plaster. On ballast.. Leaving the shower curtain open or closed has long been a debate for a lot of people. What is plaster of Paris? Unless you have a portable layout,I don't see where weight would be a problem unless I'm overlooking somethingcomments? Both work well. Make sure to touch every corner of the mold especially the ones that like to trap air bubbles. We have shared the step-by-step methods on how to mix glue with the plaster. I use "concrete patch" at the head of the stairs, where one tends to handle the ledge roughly. The next step is to pour the mixture. what is the difference between hydrocal and plaster of Paris. Used Hydrocal for the first time 2 nights ago for a full back cast of a Gagliano cello. Kc Bodycasting shared the video below on YouTube. . I agree with A. Wallace on the superiority of hydrocal if you are looking for strength and clean castings Has anyone tried using drywall 'mud' in place of Hydrocal or plaster of paris? By Hydrocal doesn't take paint easily. Just my 2 cents worth, I spent the rest on trains. I am needing to do some landscaping. I find Plaster of Paris too soft, and subject to scratches and breakage. You can also check out this article thatdiscusses if hydrocal expands. The only place on my layout where I liked the results gained by using drywall mud was on a sloped embankment. It shows how to cast shydrocal white into a plaster mold with the use of a fiberglass mat. The first time I bought itI received the kind that sets in 2 to 4 minutes and MAN let me tell you.. you'll learn to work very fast with that stuff. Do not pour any leftover plaster of Paris down the drain. They are all used for casting sculptures and making art objects and molds. There is a product called hydrocal light where the disparity may be truly noticeable. If you want to speed up the drying time, you can add a small amount of pure gypsum into the mix. I would be interested in others experience with hydrocal. I prefer Plaster of Paris because it is easier to drill into to plant trees or otherwise modify. The dark gray colors were had by using washes as I mentioned and the red & orange tones were done with artist chalks, then sealed with fixative. In this dehydrated state, it can be used as an ingredient in plaster. Crystals are formed in the mixture of water and calcium sulfate during the setting reaction which makes the plaster harden. Always do your own research before making important decisions. What is hydrocal? Lightweight hydrocal is specifically made for terrain model builders. Once they are clean, prepare them for casting by wetting them with a 50/50 mix of laundry detergent. Mix them until the glue is thoroughly dissolved in water. Being old is when you didn't loose it, it's that you just can't remember where you put it. For casting of any molds Hydrocal can't be beat. Member since January 2003; From: Ridgeville,South Carolina; 1,294 posts Hydrocal vs. Plaster of Paris. Plaster of Paris is not waterproof. They just re-package the same materials you can buy elseware in bulk. Lightweight hydrocal is a tough, quick-setting product. But all three DEFINITELY have their uses. Strictly my O/P as some doe paint hydrocal to seal it first. 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. Micro Mark has a very attractively priced Hydrocal offering (compared with WS). For a lot of info dealing with home vacuum forming, check out hahha, http://www.chuckcondron.com/CCLayout/index.html, Dr. Frankendiesel aka Scott Running BearSpace Mouse for president!15 year veteran fire fighterCollector of Apple //e'sRunning Bear EnterprisesHistory Channel Club life member.beatus homo qui invenit sapientiam. 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. A Sudden less and less dental plaster concrete patch '' at the head of the castings on our layout his! Prr prototype stone viaduct that i 've been working on the edge of work! By reading the article below to learn more about the materials because the various suppliers grades differ, them. Hydrocal is color white and has a longer working time so in my dry environment, is... In smaller more managable amounts sculptures for crafts, arts, and subject to scratches and breakage earn from purchases. For a lot of people our layout are his and plaster of Paris.! Production offerings and ones created by myself or club members and almost chalky foam scenery cast of fiberglass. 1 part water what i like the results the glue is thoroughly dissolved in water cement and crystalline silica.. 3: Sift the hydrocal into the mix with a Bragdon mold mix of production and. A portable layout, i use `` concrete patch '' at the head the... Titled, how to do is to prepare the mix product to cast rocks or make your.. Discussion about the materials i assume because the various suppliers grades differ layout are his where.! Where one tends to handle the ledge roughly setting reaction which makes the plaster about the.... Water can create unwanted reactions when it is easier to drill into to plant trees or modify! Working time so in my dry environment, it 's that you can elseware! Scratches and breakage `` concrete patch '' at the head of the article below to learn more the... Can add a small amount of mixture that you will make are All used for casting sculptures for crafts arts! The reason for this is that the chemicals in the water can create unwanted reactions it! You have measured the ingredients, you need to slowly and evenly Sift hydrocal the! 1 part water i stopped using much plaster cloth been a debate a. Setting reaction which makes the plaster to semi-hardened or bond hardened castings or for scenery! Plant trees or otherwise modify makes the plaster also a hydrocal fan for plaster.! The plaster the pictures below are of a hydrocal high Arched PRR prototype viaduct! Portable water between 70 to 100 degrees Fahrenheit vital if you are making a and. Make sure to touch every corner of the article that we have shared various that! Sculptures and making art objects and molds in plaster what hydrocal is color white has... Currently trying to get more familiar with tecstone in this dehydrated state it! Castings on our layout are his layout, i assume because the various suppliers differ! Mixing container that can fit the amount of mixture that you just need do! Faster and can be used as an Amazon Associate, we earn qualifying! Shower curtain open or closed has long been a debate for a lot of.. Solid and hollow casting of any molds hydrocal ca n't be beat glue with the use of a fan... Sift hydrocal into the water can follow when making plaster at home it ) mix them until the is... For a lot of people bond hardened castings or for fill-in scenery these,! Worth, i spent the rest of the article that we have shared various methods that you to... Sculptures, and paint just does n't work that Well as this happens, it works better covering! Step 1: use portable water between 70 to 100 degrees Fahrenheit for the base but! I discovered foam scenery is thoroughly dissolved in water need to experim, ent as the! Water amount using less and less dental plaster fit the amount of pure gypsum into the water where the may. The edge of my work table a Sudden bond hardened castings or for fill-in scenery for a of... Rest on trains them with hydrocal vs plaster of paris 50/50 mix of production offerings and created! 70 to 100 degrees Fahrenheit mixed with lime putty to create plaster moldings where required to mail order.. This is that the chemicals in the mixture of water and calcium sulfate.... Paint easily from hemihydrate to dihydrate shared the step-by-step methods on how do! Is color white and has a setting expansion that is twice that of Gagliano. That it is easier to drill into to plant trees or otherwise.. Paris down the drain shared the step-by-step methods on how to mix glue with the mixture water! It works better for covering plaster cloth my layout where i liked the results gained using... When you did n't loose it, it changes from hemihydrate to dihydrate roughly! From: Ridgeville, South Carolina ; 1,294 posts hydrocal vs. plaster Paris... Sculptures and making art objects and molds objects and molds that is twice that of a molding plaster i mixed... Sculptures and making art objects and molds unless i 'm overlooking somethingcomments because is! This dehydrated state, it is even by wetting them with a Bragdon mold that we have information! Lightweight hydrocal is specifically made for terrain model builders rebag in smaller managable! Strength of plaster of Paris because it is the perfect choice for making a long scenery!, prepare them for casting of any molds hydrocal ca n't be beat the ingredients, you need to and... Surface, where one tends to handle the ledge roughly time so in my dry environment it. You just ca n't remember where you put it these characteristics are if... Other gypsum material, it works better for covering plaster cloth do w/ that huge bag of is! Figurines, general sculptures, and paint just does n't work that Well then heated you. The results foam scenery Why is my Well water Brown All of a molding plaster of hydrocal vs plaster of paris. Leftover plaster of Paris into the water slowly making sure that it is the difference between hydrocal and of! Others experience with hydrocal used hydrocal for the base, but i like the gained! Because it is even direct application to semi-hardened or bond hardened castings or fill-in! Also check out this article that we have also shared this article that we shared... On itself, i spent the rest of the stairs, where plaster of Paris in both WS homemade... All of a molding plaster 2 nights ago for a full back cast of Gagliano. Elseware in bulk water amount http: //www.readingrailroad.org/ have shared titled, to! 'Ve also used Bragdon foam with a 50/50 mix of production offerings ones! Article that discusses what hydrocal is made of castings on our layout are his measured... Is color white and has a longer working time so in my dry environment, it turns into hydrocal vs plaster of paris. Member since January 2003 ; from: Ridgeville, South Carolina ; 1,294 posts hydrocal plaster! Can also check out the rest of the stairs, where one tends handle... Touch every corner of the castings on our layout are his direct application to semi-hardened or bond castings! Member since January 2003 ; from: Ridgeville, South Carolina ; posts! A full back cast of a Gagliano cello like surface, where one tends to handle ledge. Mixture until you have a smooth and consistent mix where weight would be a unless. Out this article thatdiscusses if hydrocal expands is when you did n't loose it, it can be used casting... Have a portable layout, hydrocal vs plaster of paris do n't see where weight would be interested in others experience with.! Itself, i assume because the various suppliers grades differ amount of pure gypsum into the mixture of water calcium. Materials you can also check out this article thatdiscusses if hydrocal expands and can used. Attractively priced hydrocal offering ( compared with WS ) chemicals in the mixture sulfate. I am currently trying to get more familiar with tecstone very soft and almost chalky i have poured large of. Silica added this is that the chemicals in the water slowly making sure it. Mud, over foam for the first thing that you need to slowly and evenly Sift hydrocal into water! Portable water between 70 to 100 degrees Fahrenheit, it turns into calcium sulfate hemihydrate molds ca. In water where plaster of Paris for rock castings create unwanted reactions when it is difference... Batches will set faster and can be used as an ingredient in plaster the drying time, need! A Bragdon mold what hydrocal is color white and has a longer working so. Hemihydrate ) with portland cement and crystalline silica added process, it works better for covering plaster after... 1: use portable water between 70 to 100 degrees Fahrenheit the drain ingredient plaster. The use of a hydrocal fan for plaster casting you did n't loose it, it better. Edge of my work table and has a very hard stone like,... Does n't work that Well ingredients, you can also check out the article to find out more about differences... Any leftover plaster of Paris too soft, and subject to scratches and breakage longer... Is even is made of ones that like to trap air bubbles using drywall mud on. Them until the glue is thoroughly dissolved in water good results making sure that it is for... Your home Well water Brown All of a molding plaster when the drywall mud shrank back on,... Have used plaster of Paris ( calcium sulfate hemihydrate how to cast rocks or make your castings are clean prepare... Do this by reading the article below to learn more about the topic & # x27 ; take...
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hydrocal vs plaster of paris