Showing posts with label graphite mold. Show all posts
Showing posts with label graphite mold. Show all posts

Wednesday, July 25, 2018

Monday, July 29, 2013

new molds...last casts

Just about worn out the first two molds.  Was able to get 38 cast out of each so far - probably just enough life left in them to finish this round.  FYI - I won't be offering any more online for awhile.  I will however have some on hand for visitors to purchase.  Think I will take a break from the melting for awhile once I finish the rest of the orders.  I got a lot of messes to clean up around here.  85,98,75,0,B,.18

Monday, May 20, 2013

it's all about the mold














Here is a brand new mold and the first mold I tried and abused.  That pour I did in my makeshift brick oven took over an hour to finally melt the silver. I have done about 15 more pours with mold #1 and it is just about finished.   All that pressure from the torch really eats away the graphite.  I have added a "pressure shield" to the mix and with a 5 minute melt time in the mini micro, I'm getting much less mold degradation.  I think I can get at least 30 ingots out of a mold now.  Did 14 in total today.  I was reluctant to pursue this venture using propane when I discovered the big solar lens couldn't do the job until I figured out that one 20 lb load of gas is way more than enough to do 100 ingots  The Ben'n'Bud Feed Fundraiser will officially start in about 2 weeks.   88,101,65,0,C,.25