This was made for a machinist/welder as a surprise. He lovingly named it the "man cake" and it still had not been cut into the next morning. The bolts were made by heating up a real bolt and putting it in a block of wax to make a mold. The diamond plate was made by my husband who took "bondo" and spread it out on a board and taped plastic on a trailer that had diamond plating on it and he pressed the bondo into the plastic and wah lah a mold. I had to leave the plastic on the mold so that it was not toxic.