Questions tagged [plaster]

Casting, carving and working with plaster, dental stone and similar materials.

Filter by
Sorted by
Tagged with
2
votes
2answers
264 views

Food Safe Plaster-Like Material

Does anyone know of a hard, heavy, moldable material (like plaster or cement) that is also food safe? I’m looking for something to make bowls and cups without kiln firing like I would have to with ...
5
votes
1answer
57 views

How do I replace a rotten wood base to a plaster statue?

I have a religious statue that I would like to repair. Unfortunately, it has been stored in a VERY damp basement, and its wooden base, underneath the plaster, is rotten, causing the plaster feet of ...
2
votes
1answer
58 views

How can I build and attach new plaster hands for a statue?

I have a religious statue made of plaster. Unfortunately, its hands are missing. I need to build new ones, but I am not sure where to begin. I thought I would make new hands out of clay, then cast ...
3
votes
2answers
5k views

mixing cement with plaster?

I have heard that adding a small amount of cement to plaster produces a stronger plaster. I’ve also read one report of this failing miserably. Does anyone here have experience with this?
3
votes
2answers
234 views

Complex plaster molds for ceramics

I've got a shape that I want to have cast but don't know how to achieve this. I now basics of regular casting but this shape has an open interior. The picture is the master shape. How could I make a ...
1
vote
0answers
21 views

Using construction gypsum instead of plaster of Paris for a substractive plaster sculpture [duplicate]

For a block-carved sculpture would it be a good idea to use construction gypsum instead of plaster of Paris if I want it to be stronger and more detailed?
4
votes
1answer
707 views

What type of plaster should I choose for a block-carved plaster sculpture?

I'm stuck with choosing the type of plaster for a sculpture I'm planning to carve out of a plaster block. The names under which they sell plaster tend to address their purpose in construction and ...
3
votes
1answer
160 views

Copying a large plaster tile by latex moulding it; is my plan correct?

I've a large rectangular plaster tile with an interesting relief pattern of bumps, dips and waves, but it's broken and I need to make a copy of it. It's not a bad break, 3 clean snaps making 4 pieces ...
3
votes
1answer
130 views

How do I get a glass jar out of refractory plaster?

So today I made a metal foundry with a 2/4 plaster 1/4 sand and 1/4 water mix and I put a glass jar in the middle of it to create room. But now the glass jar is stuck and I don't want to break it. Any ...
5
votes
1answer
462 views

Can you take a regular photo and Mod Podge it to Plaster?

My daughter in law gave me two handprints of my twin grandangels. I would like to cut out their faces from a small picture and apply them on ornament. Can I do that with Mod Podge?
2
votes
2answers
390 views

Hydrocal/Ultracal (plaster) alternative in Europe

I'm looking for a detailed hard casting plaster, like Ultracal or Hydrocal. However I can't find a distributor of these two in Europe (England, Germany...) Besides some overlypriced bags, sold by ...
6
votes
1answer
4k views

How can I repair a plaster sculpture?

My current sculpture encountered an accident and the Giraffe lost a leg. How can I repair the leg? I've got plenty of plaster mix and epoxy, but not sure if applying either will work. The ...
3
votes
2answers
3k views

What are some good tools to use for carving plaster?

I love carving plaster! I have an assortment of tools that I've repurposed for carving plaster, but I'd like to know what else there is. Are certain tools better suited to carving or detailing ...
5
votes
2answers
809 views

How can I keep my metal tools from rusting after using them with plaster?

Almost all of the knives I used when carving my recent plaster piece have now rusted. Something in the plaster greatly increased the oxidization rate of the tools, which are primarily steel. Some I ...
6
votes
3answers
4k views

What type of paint works well on plaster?

So, the color of my dyed plaster died. After I finish up the details and smoothing of this piece, I'd like to restore the color with some paint. What type of paint will work well for this? I need ...
6
votes
1answer
218 views

Why is my dyed plaster losing its color?

I'm working on some plaster carvings, following the steps in the answer I was given about making plaster. These blocks dried in their container for about 8 hours, then have been air drying for ...
6
votes
1answer
2k views

What steps do I take to prepare a plaster block?

In school, I once made a subtractive sculpture from a plaster block. Actually, the block was in the shape of the large yogurt container it set up in (about 4 inches in diameter at the top, at least 4 ...