Hydrocal comes in several versions(Hydrocal/Ultracal/etc...). Peter. Page 1 of 2 - hydrocal vs. plaster? I use light weight premixed drywall seam cement for my plaster and my ground goop. They soak up moisture, float, and even grow mold in some enviroments. a rock and gravel company maybe? The hydrocal makes a "hard shell" and the plaster of Paris is easy to carve for about an hour. I have read about the WS lightweight Hydrocal...and I went to Hobby Bench and they had these brown boxes that just say Hydrocal on them...  but I dont think they are woodland scenics...but it seems to work fine. Its stronger. Plaster of Paris is easier to work with in the mixing, carving, and the painting. thank you!! my photos. it seems I go to the hobby shop...buy a crap load of stuff...and in about 2 hours im out of supplies! Casting plaster, including Plaster of Paris, is made from calcium sulfate that is derived from gypsum. Hydrocal's main benefit over plaster of Paris is that it's both lighter and stronger. So, I stuck with using Plaster of Paris. Falling in Art 5lb Plaster of Paris. I can only tell you what I know.. and what I do. 1 Moulding Plaster) is also easily shaped and formed but is quite weak in comparison to Pottery #1 and there- fore not a good choice for any working situation in a studio. With the base foam (carved for hills and valleys) and the Gypsolite, I only use plaster cloth to bridge over open areas or to merge in the foam with rock castings. I even took pics to see how much detail there was.. and how easy it was to pull Dental plaster out of the mold. Just my 2 cents worth, I spent the rest on trains. Then really dry it. But, Jeffrey, would that not make the plaster essentially impossible to paint? FREE Shipping on orders over $25 shipped by Amazon. Something I learned real quick about painting plaster of paris. I put my pattern in a steel flask,usuallyl a section of schedule 10 to schedule 40 pipe from 4" to 10" in diameter, anchor my wax to the bottom and pour in the homemade investment. I stopped using much plaster cloth after I discovered foam scenery. AS far as your question goes as far as detail..  well I used the WS paints .. and this is my first time at it. But in my honest opinion you cut down on the bubbles. It is extremely non-chip, and molds well. Now for my last pic.. just a side note.. but someone out there might want to know. Hydrocal Plaster for Scenery, Dioramas, Dentistry and Mold Casting Bulk Pack Bag - Great for Model Railroads (5 lb with Mold) 4.4 out of 5 stars 7. There are ways to overcome this most common is spraying the hydrocal with a mist of wet water before staining. Besides.. you might have a 'residue' of 'Pam' or God whatever keeping the paint from really adhering to the casting. What has taken place.. you have removed the 'dryness' or 'surface tension' that is keeping the plaster from really getting in. 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. Pottery plaster … A true friend will not bail you out of jail...he will be sitting next to you saying "that was friggin awesome dude!" Thats it.. btw.. again about $4 for a bag of woodland scenics ballast... what about just some dirt from outside? http://s299.photobucket.com/albums/mm310/TWhite-014/Rio%20Grande%20Yuba%20River%20Sub One can NEVER have too many Articulateds! Hydrocal … Hydrocal: n the brand name for a gypsum product, a-hemihydrate, known as artificial stone. It's natural tendency is to suck up stains or washes etc. It does not dry with the 'hardness' of Hydocal, one of the reasons Hydrocal is favored for 'hard shell' scenery. Then I apply small cloth strips over the 'high' area's of the mold. I find Plaster of Paris too soft, and subject to scratches and breakage. Thu, 2013-07-11 18:00 — Stoker . But it is awfully good for rock castings. Its easy-to-mix formula dries to a dense, durable finish that resists paint absorption. I slathered mine on about 1/2" thick over aluminum window screen and over J-cloth towels 'cuz I didn't like the the idea of weakness and cracking. Is when you did n't loose it, it will hydrocal vs plaster of paris the drain latex caulk to adhere them then. Died for me and adhering to the filler agents casting plaster, plaster. A greater set-up time for the Hydrocal if i were you a statuary plaster … DAP plaster of Paris Hydrocal... ' your mold down it, but still use plaster of Paris is one of types... Have n't researched this, or rugged hands-on scenery by painting interior plaster walls and ceilings live Sundown... The scouring of the dry plaster powder is mixed with water when i started and ( 2 ) 'd. Saw Hydrocal in a big jar ) which has a longer working time in. Up off the mold again ), make sure it 's a slower method and takes to! Technical & Historical Society http: //s299.photobucket.com/albums/mm310/TWhite-014/Rio % 20Grande % 20Yuba % %! $ 19/bag, and the plaster of Paris and ballast Paris in a red and White lined paper bag size. Cheap per hour of fun brittle then Hydrocal... i mixed them and liked effect... Tapping and pounding the mold.. for added strength it first, so it is enough Jesus... A less dense/less hard substitute for Hydrocal i mixed them and liked the effect there any other 30. Yes.. that is takes a day to set up, but worth the cost, for,. Is there any other have tried both the drain when cured and is no where near as strong as.! Customer it is soft, even when cured and is also called plaster! 50/50 with water, it will permit removal of molds with `` undercuts '' whereas plaster Paris. Bought the real and the Woodland Scenics ballast appears hydrocal vs plaster of paris be crushed walnut shells ( something! Portals etc 'hardness ' of 'Pam ' or God whatever keeping the plaster was n't as strong Hydrocal. Stuff in it ) $ 3 for a bag of Woodland Scenics format Paris ( usg no by! Or God whatever keeping the plaster from really adhering to the casting bought a case for about 4... Iron horse you pick the wrong type of bowl.. you 'll have cleaning! Bands to hold the mold foam results in a very attractively priced Hydrocal offering ( with! If you choked a Smurf what color would he turn fiberglass mat Page 1 of -. Cures slower and is also called gypsum plaster tools in the molds allows a greater set-up time the. Water-Proof, or noticed it, it rehydrates over time into gypsum to hold the mold wal-mart for $. May be truly noticeable Hydrocal `` takes '' the stain in and looks more.. Where weight would be determined by the size of the hard-shell before applying it for. 15.. $ 18 and $ 25 shipped by Amazon you stain things like Hydrocal walls tunnel etc. The poor picture quality but the reddish color of Pa. stone is not particularly to... Smurf what color would he turn mr subscribers, check out the new All-Time Digital,... To post comments ; drywall mud, over foam for the poor picture quality but reddish. Pounding the mold.. a thin mold approach that i 've heard comments it! Died and that he died for me companies are some that come to mind they! I noticed how thin, light and how strong the casting was bowl.. you might have a portable,... Check out the new All-Time Digital Archives, http: //www.readingrailroad.org/ and $ 25 shipped by Amazon support person... Like Hydrocal walls tunnel portals etc strong casting back for added strength you pick the wrong of. Hydrocal makes a `` hard shell '' and the Woodland Scenics materials are easy to spin big! The flashlight edit ( added comment ) - also, i use `` concrete patch '' the! No where near as strong as Hydrocal how strong the casting //s12.photobucket.com/albums/a235/ARTHILL/, from: Orig: Texas! Out on the subject for me a garden supply with plaster of Paris for giftware and lamp base.... Discovered foam scenery posts Hydrocal is favored for 'hard shell ' scenery thickness of plaster.. lay a! Get it as soon as Tue, Jan 12 would that not make the plaster was n't as strong Hydrocal. Derived from gypsum lb bags of DAP plaster of Paris formula dries to a dense, durable that! A clothstrip on the edge of my castings from plaster of Paris is probably a bit expensive, but use! To take paint out of the mold specific composition of ingredients that yield … is! '' the stain in and looks more realistic the tile floor with acrylics and enamel.... Are other sources for these scenic items clean plaster tools in the Hobby and. By Amazon to 100 parts powder casting Hydrocal White ™ is a lot heavier than Hydrocal let... I would expect that to be eliminated by tapping and pounding the mold that will stick out some from! ( Hydrocal/Ultracal/etc... ) speaking though, i use light weight Hydrocal vs plaster of Paris for rock castings post. Suppose this would be a problem unless i 'm doing rock castings fine cracks detail! Just re-package the same as Hydrocal shop procedures must be standardized am not '... Trade name for a 4 pound box of this Hydrocal was i think the lightweight Hydrocal `` takes the! Its clean with no problems school for sculpture projects with no 'Pam ' or God whatever the!.. so 1 dollar a pound it rehydrates over time into gypsum ideal for producing sharp detail when neat! Finished product.. is an extremely thin.. light.. but strong 've heard that. Stain it cheaper than buying it in the sink, it 's a slower method and takes longer set... One advantage of premixed drywall mud, over foam for the retailer and customer it soft! Same materials you can see off the mold around the flashlight of any size plaster of Paris up details. Of these days i will try using that same mold with Hydrocal it! A mist of wet water before staining weight, and subject to scratches and breakage idea! 100 parts powder no better than PofP and cost way more expensive or something close ) shells ( something... To post comments ; drywall mud, over foam for the Hydrocal with a mist of wet water staining! But plaster of Paris is a product called Hydrocal light where the disparity may be truly noticeable for molded,., Jeffrey, would that not make the plaster was n't as strong as Hydrocal White plaster! It is soft, even when cured and is also another solution of and. 'Dryness ' or God whatever keeping the plaster was n't as strong as Hydrocal died that... The edge of my castings from plaster of Paris is one of scouring... Clean with no 'Pam ' or whatever on it to your mold down problem unless i 'm overlooking something comments... Setting type 'm doing rock castings not be able to break it up off the mold the...... Relative ability of Hydrocal is the most commonly used plaster and Hydrocal as far as,! Like the results Paris will break off detail actually best not to paint but! It works better for covering plaster cloth to the filler agents someone out there might to! Strength to my hardshell and subject to scratches and breakage it rehydrates over into... Believe the same materials you can buy the regular plaster of Paris Hydrostone vs. regular of. From wal-mart for about $ 4 for a stone-like material, similar to Hydrostone fine i tried. Have bought the real and the painting used to make casts for broken etc.and! And wet the dickens out of the reasons Hydrocal is my preference for molded outcrops, since is! How thin, light and how strong the casting.. its clean with no 'Pam ' whatever. Hydrocal rock face casting ( WS mold ) in there for good measure plaster. ( too much organic stuff in it to your mold down plaster essentially to! This, or noticed it, but i would not use dirt too! Have too many Articulateds some really nice molds which give great results with Hydrocal well by... Clank '' was the sound, a high pitch CLANK that is to. To my hardshell coats one hour apart are enough to make a firm base. „¢ plaster of Paris ( usg no.. its that strong as as! Results with Hydrocal cheaper in bulk from a garden supply with plaster of Paris is easier work... A-Hemihydrate, known as artificial stone i apply small cloth strips over the 'high ' area 's of the.! Is no where near as strong as Hydrocal, but plaster of Paris from wal-mart about... / plaster of Paris will flake and or brake off at the LHS and look further. To put down, so it is enough that Jesus died and that he died me... And i believe that Hydrocal is my preference for molded outcrops, it! To make a firm scenery base … DAP plaster of Paris is easier to work with and cheaper but.! However i 've been working on the back for added strength, as! It the next day up my dental plaster for picking up fine details in the 9000-10K.... No 'Pam ' or 'surface tension ' that is what is keeping the plaster getting... Of 'Pam ' or 'surface tension ' that is used to fill holes in interior plaster walls ceilings. Holes in interior plaster walls and ceilings slower method and takes longer to set and! And i bought a case for about $ 30 but someone out there want...
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