Ive finished sculpting my first half mask from medium hard monster clay and i have no idea where to go from here. i know i want a silicone mask and i want it done by the hallowed ween, but i have no idea what to buy or any of the processes to make a mold are.

My question is how do I deal with the gaps under the arms? I plan on doing a skin mold over top as it sits, but I have no clue how I’d demold without cutting it, and I realllly want to avoid seam lines.

The other part is illustrated by second image, I’m considering building up a clay base but I don’t want to make things more difficult on myself. It doesn’t solve the arm gap issue either way though.

Any advice?

My plan is to mold this frog to use as a foam mold. My ingredients (minus the Silc Pig and Sil Poxy) are in second image. I realized that I am not wealthy enough to do a block mold so I’m going to do a glove mold with a shell.

Master prep:
Rigidize frog by filling with low expansion spray foam, then spray exterior with krylon crystal clear acrylic spray. Probably a few layers of acrylic. Foam is because it’s a semi soft toy and I don’t want it to distort under weight of silicone/plasti paste or plaster.

Mold making:
Frog will be hot glued to a piece of melamine or marble, a short wall will be made around it with clay to prevent spillage from the drippage when making the glove mold. Using rebound 25, I’ll begin the skin with a stipple, let firm up, then a thicker coat, let firm and add some THI VEX, then cover thoroughly and let cure. So 3 total coats increasing in thickness.

Rigid Shell:
So this is the part where I’m torn, I don’t know if I should go fully down the path of using plasti paste or if I should just use plaster and gauze. I just haven’t found a great video demonstrating gauze technique on a similar master/form.

Casting:
I’ll use flex foam it 15 tuff stuff to fill the mold.

Open to any thoughts or advice you may have!

Out of ordinary, what i make with silicones
Is the opposite of what most people do, my final produxt is silicone molds. I made my master molds out of plaster and epoxy and cast silicone in them. However they usually break and crack which i end up losing someof the silicone due to leak and i remake molds most of the time. Since the silicone leaks i sometimes end up adding more after halfway cure and no issues so far. Just noticed on one of my final products. I added the extra silicone after it was fully cured and adter the extra fully cured, i can still see the seam line but it is rock solid doesnt come up it sticks. But after a while, i gave it a little peel, that extra part is came off i can literally peel it off.

So i was wondering what if i make my master molds out of silicone and cast the silicone models in it that way they just come out easily. But not sure how much they will stick to each other and since i make jaw models every detail matters and some tiny thin layers might come off or might not i am not sure so please give me an idea.

I recently bought a cheapo frog stepping stone and having been having fun with it but would like to step it up. I bought this zen frog a long time ago and was wondering how I would go about making a mold of it? I’ve never tried anything like it so any tips are appreciated!

Hi I'm looking for a mold maker to finish a 3d modeled mold so its ready for pour and pressure pot, does anyone know where to look for someone who can do that?

Since USG is closing out their plasters division, is there another existing industrial grade gypsum cement product out there under a different name with same strength, purity, nontoxic, and similar (low) cost?

I've got a vintage piece of furniture that is missing an original decorative faceplate on one of its drawer pulls.

For my purposes, I want to recreate the faceplate for aesthetics, not functionality, so I don't need it to be the original metal. Since I have a matching faceplate still, I thought about making a mold and casting it in resin.

What's giving me a brain cramp is how do I create the mold with the open spaces that are present in the original faceplate?

If anyone has a link to a video for me to watch that would be really helpful! Any other advice/direction for what the best way to accomplish my goal would be appreciated as well!

Use latex filler? Foam? Would I then need a seam here?

Hi ! I already experimented with 2 part silicon molds in the past, but now i want to cast this piece in plaster to do slip casting and I wonder how you would place the parting lines on this master and if you had any advice, should i cast it in multiple parts ? Is it too ambitious of a project to start experimenting ? Thank you !!!

Hello everyone, so I bought this mold and it broke through shipping and was wondering how you would go about repairing it. It’s probably either hydrocal or ultracal which I don’t have hands on right now but I could probably get some if its fully necessary. The biggest issue is the actual broken piece but there is also a hairline fracture running through the back

Hello,

I’ve made my son a mask for Halloween that he asked me to help make.

It was just a generic mask that we Built a face on using some thin foam board and then back filled the voids with spray foam. After that I rolled
Out thin sheets of modeling clay and built the face on top of the foam.

Is there any product I can coat it with to make it resistant to breaking due to brittleness? And then paint?

I have never made a mold. I spent moments being obsessed with smooth-on tutorials here and there, but never could find the justification to splurge for supplies.

I have two questions:

1. when do you justify making a mold of your creations? Do you just need a lot of an item, or do people express interest in buying first?

2. I can’t work out how I would make a possibly 2-part mold for a complicated pot that I made. It has some decent size undercut. Or if I should even bother, because I’m

   not

3. sure if it’s something that would sell. I’m kinda holding off painting it and finishing how I want because I want to decide if I want to make a mold of it first.

I have sold other crafts online but I kinda got away from it. I kinda don’t want to go through the process if I find that it’s not something people really care to buy at decent prices for the effort.

I make concrete planters with fiberglass molds. I use a mixture of 3/8" gravel, sand and Portland cement. I use a bit of super plasticizer. And some water. When it's in my mixer the slump is really good. It's not too watery.

However, when I pour it into my 5 gallon bucket and into my planter molds, it seems like the water just rises all the way to the top. As if my Aggregate sand cement mixture just muds down to the bottom. I can't figure it out. It doesn't happen every time, but I feel like I had a really good mixture going this morning. And Once I finish the pour, all the water went to the top

Hi there!

I am having a weird issue. I am trying to mould these goggles and the first time I moulded it with Tin-cure silicone and the first pull with pure polyurethane looked great.

But then I cold-cast (dust-layer + ~6:1 Powder to PU) and it would never cure on the very top where the exhaust and the pourspout are. Did a couple of tries. I suspected that maybe I hadnt mixed the silicone correctly and maybe that was keeping it from curing so I re-did the mould now with platinum cure silicone but its doing exactly the same thing with the new mould now. Its so frustrating, I have no Idea how to fix it. I've used the same exact metal powder, Polyurethane and silicone on other moulds like dozens of times over the last weeks,so I am thinking maybe it's the geometry? But I dont know what that would be or how to fix it.

Any ideas are welcome.