0070798103122

DAP

Model 10312

Internet #100123682

Store SKU #293032

25 lb. White Plaster of Paris Dry Mix

$15.98 /each
  • Set in 20 - 30 minutes
  • Professional quality
  • Can be used to make your own DIY version of chalk finish paint

Frequently Bought Together

Product Overview

Repair your plaster walls with this DAP 25 lb. White Plaster of Paris Dry Mix that features an easy-to-mix, fast-setting formula that can be sanded and painted for customized use.

California residents: see   Proposition 65 information

  • Easy-to-mix formula dries to a dense, durable finish
  • Ideal for repairing plaster walls and ceilings or for hobby and craft applications
  • Sandable for a smooth finish
  • Paintable with oil- or latex-based paint
  • Resists shrinking and bubbles
  • Fast-setting for quick repairs

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Customer Questions & Answers

43 Questions59 Answers

Customer Questions & Answers

25 lb. White Plaster of Paris Dry Mix
25 lb. White Plaster of Paris Dry Mix

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Can I make a mold with plaster and pour melted lead into the mold?

This question is from 25 lb. White Plaster of Paris Dry Mix
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IL
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January 13, 2016
Will it be a one time use mold? As in, will the mold break apart after one pour of lead? The melting point of lead is 621 degrees Fahrenheit.
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March 8, 2016
Answer: 
Yes. I carve objects out of insulating foam boards, paint the detailed areas, (or the whole thing) with plaster of paris, then encase the whole thing in greensand. When my molten metal is ready, I pour it into the sprue of my carved foam piece. The molten metal vaporizer the foam and fills in the void left behind.
ALWAYS ALLOW 2-3 DAYS FOR THE PLASTER TO DRY. TRAPPED MOISTURE HAS THE POTENTIAL TO
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Yes. I carve objects out of insulating foam boards, paint the detailed areas, (or the whole thing) with plaster of paris, then encase the whole thing in greensand. When my molten metal is ready, I pour it into the sprue of my carved foam piece. The molten metal vaporizer the foam and fills in the void left behind.
ALWAYS ALLOW 2-3 DAYS FOR THE PLASTER TO DRY. TRAPPED MOISTURE HAS THE POTENTIAL TO "EXPLODE" AND YOU CAN GET HURT.
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February 9, 2016
Answer: 
Well if you get 21 cups of DAP Plaster Of Paris & 21 cups of play sand & mix it with 15 cups of water it will make a very good mini foundry. Thats exactly what i have at home & i make my own fishing sinkers with it!!!
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January 27, 2016
Answer: 
No, it is not recommended to use this product for molding lead.
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Home Improvement Profile: Professional
January 26, 2016
Answer: 
there is too much water left in the plaster the hot lead will boil the water and the mold will explode. Some cement will work if it is heated to drive off all water vapor
...
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Home Improvement Profile: DIYer
January 20, 2016
Answer: 
Are there any suggestions, other than making molds by machining aluminum?
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January 19, 2016
Answer: 
We do not recommend DAP Plaster of Paris for casting with molten metals.
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This question is from 25 lb. White Plaster of Paris Dry Mix
 
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Can it be put in refrigerator

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June 30, 2016
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July 1, 2016
Answer: 
This could be kept in the refrigerator.
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July 1, 2016
Answer: 
DAP Plaster of Paris is not classified as safe for food contact.
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How much water would I use to mix the whole 25lb.?

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May 26, 2016
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Long Island, New York
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Home Improvement Profile: Professional
June 20, 2016
Answer: 
I do it by sight. I fill a bucket 1/3 up with water and I sprinkle in plaster as I go. Do not drop it in in clumps. I keep adding plaster into the bucket to mix until the top of the water is covered 75% with plaster islands and the plaster is no longer sinking in. Only then do I start mixing. You do not want to start mixing beforehand because that catalyzes the reaction.
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May 27, 2016
Answer: 
It is not recommended to attempt to mix a 25lb. bag of Plaster of Paris at one time due to the short working time.
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Can this be mixed with sand to match what is on my 50 year old plaster walls. Final coat would be just the plaster witho

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March 15, 2016
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March 16, 2016
Answer: 
No, this can not be mixed with sand.
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March 16, 2016
Answer: 
A small volume of clean and dry sterilized play sand can be added to DAP Plaster of Paris for texturing purposes.
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Customer Reviews

Rated 4.1 out of 5 by 15 reviewers.
Rated 5.0 out of 5.0 by Excellent for use in Mold Making for Lost Wax Casting I always use DAP Plaster of Paris for my molds since it seems to mix very well with sand in both 1:1 ratio for higher detail AND 1:2 ratio for a stronger hold. I love that it sets quickly and dries white. USG dries off-white/ cream eggshell and that's extremely annoying after using DAP. DAP also seems to be a better quality plaster than USG. USG crumbles even well beyond it's complete curing time. DAP does not. I've never used USG for molds as it is weak and I never plan on using anything other than DAP Plaster of Paris for my casting and mold making needs. It's an absolutely perfect fit for Aluminum and Bronze casting. June 20, 2016
Rated 5.0 out of 5.0 by Plaster I Had a great time making crafts with kids! Easy, fun and messy! August 23, 2016
Rated 1.0 out of 5.0 by Beware: wrong product shown!! The product shown in the photo (DAP Plaster Wall Patch) is a completely different animal from the one listed in the title (White Plaster of Paris Dry Mix) and actually stocked on my Home Depot's shelves. The former is DAP product # 10304; the latter is DAP 10312. I just spent 2 hrs on a wild goose chase trying to buy the wall patch & finding only the pure plaster of Paris. The wall patch has a higher lime content; it has a longer working time and a thicker consistency. The straight plaster of Paris only has a working time of 6-10 min. It is fine for cracks or small holes but not for larger areas. January 30, 2016
Rated 5.0 out of 5.0 by Fantastic product I have read a lot of comments that it sets too fast for patching walls. That is not what it is used for when doing large areas or even medium sized areas "2'x2'". But if you add it to regular drywall compound and get the ratio correct you can do massive repairs, up to 2" thick or more in one shot saving a lot of time. It will dry in less than one hour, very hard and stable, no cracks. If you are installing real plaster moldings or lighting fixtures you will see every guy doing the work with at least one bag of the the stuff. October 2, 2015
Rated 5.0 out of 5.0 by Excellent for making molds and detailed casts I use Plaster of Paris to make molds and small casts of detailed objects. It sets up quickly and is very strong. Larger molds can be reinforced with cut-up fiberglass cloth. Antique ceiling details and old plaster lamps can also be repaired (when clean and dry) with new Plaster of Paris, but working time is very short. Very large plaster pieces should be reinforced with something stronger, like metal rods. When set-up and completely dry, Plaster of Paris accepts all paint, varnish, and other surface treatments I have used. Note: Even in a desert climate, it can take up to a week for larger plaster pieces to dry. It also does not sand as easily as drywall mud. Plaster of Paris sands better with a rasp. Not recommended to texture overall wall surfaces. Drywall mud is better for that purpose. April 14, 2015
Rated 3.0 out of 5.0 by Not for plaster wall repairs Do not try to use this product to patch holes in plaster walls, or to add a smooth top coat to plaster walls. This product sets up too quickly - at best 20 - 30 minutes, and if it's old can set up much quicker. DAP makes a product called "Plaster Wall Patch" that sets up in 2 hours, and according to the manufacturer can have a working time of up to 90 minutes. You need that extra working time to be able to smooth out the patch or top skim coat. This product is best for craft projects or plaster molds. Since I can not seem to find Plaster Wall Patch at Home Depot I went to DAP's web site and got a list of stores I can get it from. September 25, 2010
Rated 4.0 out of 5.0 by Grog say "Good stuff" works very goood ...makes crunchy croutons . This stuff is very dry until you add water. Getz very hard very fast . When making face masks don't forget to leave nose holes for breathing & try not to sneeze before it setz. June 2, 2015
Rated 5.0 out of 5.0 by vinegar A little vinegar added will delay the drying time. Giving you more time to work it. -Old School August 23, 2014
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