OT: Backyard metal foundry almost done :), aluminum/brass casting getting closer... Options

[bondo]

QUOTE (rhodyguy @ Mar 21 2006, 10:03 AM)

oil based? i bet that will be smokey. i wonder if after one use the oil base is pretty much burned out? check out "foundries" in the phone book mike. i bet you can buy some 5 gal buckets of green sand for next to nothing. where are the furnace pictures? another thread? did you spring for the pyrometer yet? k

Speaking of green sand... I need to find a source of green (olivine) sand in 80, 100 and 120 mesh.. But only in 100 lb quanitites (it's for glass casting at my place of employment). I've looked all over and I can only find places selling it by the ton. I don't care where it's from, we'll pay for shipping. I just need to find a place that sells it in small quantities by mail order.

Anyone know of a source?

[jsteele22]

QUOTE (Mueller @ Mar 21 2006, 10:33 AM)

Check out this thing, with a 3D model (and some cash (IMG:http://www.914world.com/bbs2/html/emoticons/smile.gif) ), the machine will make your mold for you "Print" your own mold and cores for casting

That is so cool ! Are you thinking of doing this (having someone else "print" the mold for you) ? The site said that the material costs are about $.10 per cc ($100/liter) of volume of the printed part; unused material is recycled.

Any idea what kind of markup there is for having someone print a part (mold) for you ? Would one of these molds be re-usable ?