What do you use to make a mold for a small part?

You might find this interesting? Haven't tried it yet, but I ordered some a while back. There's a video that explains it's use.

Instant Mold

I use Smooth On oomoo 30. I didn't make it up, thats what the call it. I prefer the longer set time to make sure all the air bubbles float away.

I started out using 100% silicone sealant for molds and 2 part epoxy for casting with mixed results. Shelf life seems reasonably long. I am still using the product 5 years after purchase.

My photo hosting site appears to be down right now or I would post pics.

Pete

uuummm.. Never molded anything except ceramics, with molds for it.

However, I have the fix on order.

One 8" build cube 3D printer is paid for and supposed to ship this month.

I got it cheap by buying in advance on a new design from Solidoodle.

Check them out, much lower cost than the competition.

Be sure to compare build area, heated platform, resolution, and materials it can use to get fair results.

Example, Solidoodle Workbench model is $1,299 but that's a 12" build cube, with all the goodies built in. Comparable to the big names that would cost ... Oh ya, no one else makes one that big. But the standard at Makerbot goes for $2,899 and it's smaller than mine.

Update Stratasys has a 12"x9"x9" but I can't even get a price and you know what that means. You also have to buy the material in proprietary sealed containers but they have materials no one else offers. This appears to be a liquid materials with UV or other curing setup. Also can print medical grade parts, so add that cost level in.