Tuesday, June 16, 2020

I'm back casting again.

The red sand is oil bonded sand, it gives much finer detail. Mandrels are placed in the mold and for a hold in the casting, the mandrels are knocked out afterward. Then holes are drilled and tapped for grub screws. I made the patterns on a 3d printer, and I cut the negative of the patterns to make a small holder to put the handles in for drilling.

I've also started back lost wax casting. of the three hands, I've poured 2, one failed and will be going back in the pot. The other turned out well. I did not burn out all the wax residue on the second hand. So when I poured the bronze into it, it started spitting and flaming quite a lot. The hand that came out ok, had a lot of flashing where the shell cracked, but since the shell was buried in sand, the cast was not ruined. A little work with a sharp chisel, and a dremel, and it'll be fine


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