Stevej72
Member
I think this is my best coffee blank so far. It is dark french roast coffee beans ground on the coarsest setting and then sifted to get out the real fine stuff. I cast it with Alumilite in 3/4 inch PVC about 2 3/4 in long.
After about an hour it was still not cured all the way hard (maybe because it is only 64 degrees in the basement and such a small amount of Alumilite). So, I heated the oven to 150 degrees and turned it off and put the blanks in. After another hour they were still not cured and I left them there.
Shortly after that my wife (not knowing the blanks were in the oven) turned on the oven to 325 degrees. When it was up to temp and she was putting whatever she was baking into the oven she found my PVC tubes. At that time they were very hot and I assumed ruined. But, after cooling they were completely hardened and turned great. I'm not sure if this is a manufacturers approved way of curing or not, but it works.
After about an hour it was still not cured all the way hard (maybe because it is only 64 degrees in the basement and such a small amount of Alumilite). So, I heated the oven to 150 degrees and turned it off and put the blanks in. After another hour they were still not cured and I left them there.
Shortly after that my wife (not knowing the blanks were in the oven) turned on the oven to 325 degrees. When it was up to temp and she was putting whatever she was baking into the oven she found my PVC tubes. At that time they were very hot and I assumed ruined. But, after cooling they were completely hardened and turned great. I'm not sure if this is a manufacturers approved way of curing or not, but it works.