Ostberg
Active Member
This is my very first sculpt and mold for it.
6.5cm long, weighs 9g.
For the sculpt i actually used Plastilina, a non hardening clay, it gets easier and easier to work with the warmer it is, or in other words, the more you work with it. and once it cools down it gets harder.
The mold was made out of RTV Silicone 181, from what i've seen, it copies small details really really well, i worked a very long time on this tooth, maybe too long for being the first product, gave it alot of detailing, tiny stripes
The actual cast is made out of something called Epoxyresin 141, can't really say anything else besides it gets hard and light, tho if you make thinner casts it can bend abit, like hard rubber.
The store advised me to try these materials out, as i'm new at molding i don't have any experience at all, tho after making this mold i've already learned several things i can improve for my next ones. I think i picked a bad place for the pouring and air hole, a better place would abe been at the top or at the bottom of the tooth, then maybe i could have skipped the airhole aswell.
Only problem i encountered was bubbles in the resin, i think it was me stirring too fast, because i did pour the resin with a thin and slow flow.
If you think i can improve something, techniques, type of resin, etc, feel free to share.
/Ostberg.
6.5cm long, weighs 9g.
For the sculpt i actually used Plastilina, a non hardening clay, it gets easier and easier to work with the warmer it is, or in other words, the more you work with it. and once it cools down it gets harder.
I also got 20kg studioclay, for bigger parts, wich hardens in the open air.
The mold was made out of RTV Silicone 181, from what i've seen, it copies small details really really well, i worked a very long time on this tooth, maybe too long for being the first product, gave it alot of detailing, tiny stripes
I do have vaseline available for the releasing, but i tried without, and it worked just fine, no problems at all, but i guess with small parts like this it's not needed.
The actual cast is made out of something called Epoxyresin 141, can't really say anything else besides it gets hard and light, tho if you make thinner casts it can bend abit, like hard rubber.
Or maybe all resins are liek this the first 24 hours? etc.
The store advised me to try these materials out, as i'm new at molding i don't have any experience at all, tho after making this mold i've already learned several things i can improve for my next ones. I think i picked a bad place for the pouring and air hole, a better place would abe been at the top or at the bottom of the tooth, then maybe i could have skipped the airhole aswell.
Plugs holding the mold together will be added for my next modl aswell.
You learn by your mistakes. =)
Only problem i encountered was bubbles in the resin, i think it was me stirring too fast, because i did pour the resin with a thin and slow flow.
If you think i can improve something, techniques, type of resin, etc, feel free to share.
Been reading threads about casting, molding and sculpting, but it's not always easy to understand, or even to find the materials that the people with 5-10 years experience has, and why to use them etc. =P
/Ostberg.
