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Solvent that 100% dissolves gorilla glue? need castable material to chemically to "burn out" for a ceramic shell casting Answered

Hello. I am working on doing an aluminium lost foam casting of a small part. I read although hazardous, some had gotten successful results from using polyurethane foam (great stuff) in a mold, and proceeding as usual. I don't normally use great stuff, so I mixed gorilla glue with 1/3 water, stirred till I had small bubbles, poured into a silicone mold, and got a pretty good few castings that were VERY dense and hardly burned at all. In fact it was practically fire resistant. I threw it on hot coals and it took a long time to shrivel into a hard little mass

So next time, I used dollar store foam board next, a la Grant Thompson, but with terrible failures. It seemed the foam board didn't burn very well either. A foam board riser had actually melted off and looked like it floated away in a bubble, although a regular styrofoam block I had cut to shape cast perfectly, but was too thick and the texture was too poor as the foam was so much less dense.

It was mentioned in this blog post that someone used acetone to burnout a tricky patten for a lost foam casting, so I figure I have to do the same. My pattern is curing at the moment. But my silicone molds are far more precise and more detailed than my 2d representation I made with a wire cutter. So my question is there another material that is castable but water resistant, like styrofoam, that I could use a solvent to melt out. I can't really do  lost wax because I don't have the equipment and live in an apartment and have to do this stuff out on the beach. Also due to family reasons I can't be away from home for the time it takes to do burnouts, 6 hours for a full flask, but that's also the reason why I am doing the shell casting because I can't spend too much time away from the fam.

Thanks for your time, sorry if I rambled.

And thanks for all here and elsewhere who teach and inspire, even if they don't know they are doing it.

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from "

https://www.reference.com/home-garden/can-remove-d...

Dried Gorilla Glue can only
be removed mechanically by sanding, scraping, scratching or slicing
through the glue with a knife, chisel, razor blade or other tool. Since Gorilla Glue is a urethane glue, its curing process is not reversible with a solvent like acetone or paint thinner.

If the glue is still wet, any paint
thinner of mineral spirits will remove it. Gorilla Glue can stain skin
and ruin clothing. Gorilla Epoxy and Gorilla Wood Glue can be cleaned
off of skin with soap and water, but Gorilla Super Glue bonds skin
instantly. The company recommends always wearing protective clothing and
gloves with any of their glues to prevent skin exposure. They also
recommend using safety glasses or goggles if there is a chance of eye
exposure

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sk8er6

1 year ago

The forums are a little hard for me to follow. Ended up making an open face mold with epoxy bonded sand and did lost wax by melting it out with a torch. Did get a crude casting. As for my project, I decided it would be best to go from my 3D prints straight to bonded or no bake sand molds. I'm pretty busy with school now, but I'll update at some point in the future. Thanks for all the help!

waxes dissolve in solvent, the solvent is kerosene

Usually with investiment casting the wax is set into plaster and then once dry you burn out the wax.

I have used plaster of paris with some success.

Should be able to, I used a pilchard tin for the plaster mold and inverted it over a wire stand, Put a terracotta plant pot covered in aluminium foil in case it cracked over the tin and then burned out the wax with a old camping gas stove.

Nothing fancy.

Make sure you heat up the mold before pouring in the metal.

Lots of web information on how to make your own casting wax as well.

His part is very small and I would think could actually be cast in a flat open topped mold making it easier to get the wax out after.

about how long was the camp stove burnout for the jewelry size pieces?

You could try gelantine.
But instead of making your own gummi bears you make your mold from it.
Should burn out with little residue that can be blown out before the casting.
Ballistics gel works great too but is a bit more on the expensive side.

I was thinking food base as well... Worth a shot

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sk8er6

1 year ago

hello all thank you for the many replies. I am in the middle of trying to burnout a lost wax flask of 50% sand and PoP. I'll post results.

I think for fine castings although slightly more fiddely you will be better off with lost wax casting Lots of Youtube video showing how.

i have used this for jewelleyr and had excellent results before.

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sk8er6

1 year ago

thanks for the reply.

my part is about 1/8" x 2.25" x 2.3", a mostly rectangular piece with some large holes. if that makes any difference.

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iceng

1 year ago

Try sand casting overnight .