How ironic, I was going to post some recent issues I had engraving a cake pan. (see second paragraph for those issues)
For cake pans, I called Doughmakers (http://www.doughmakers.com/newmain.htm) last October and asked them to send me a 9" x 13" pan and lid. Told them I was experimenting. They asked me to purchase the pan and they would send a lid at no charge. I also asked if they still had the colored lids and they said they do not carry them any more, so I settled for what they had.
I used Cermark on the product. Using a Universal m360 with 50w, I set the power at 100 and speed at 50 for the first run. When I went to clean it up it did not stick. They entire image washed away. I put Cermark back on it and re-ran it at 100 power and 25 speed. It seemed to stick this time but I still have my concerns. If you rub the design with enough pressure, it seems to be coming off. I engraved it for my Mom for Christmas and she was so exited. Asked her to use the hell out of to see how it holds up. I still have my concerns, I do not think it is going to uphold after a few washings.
Do not mean to hi-jack a post, but I hope that sharing my experience will allow the others to maybe share with you what I may have done incorrectly with my engraving so that your first test run will be successful. In the meantime, I will also gain that knowledge.
PS: That cake pan was in my shop for 3 weeks and I shared it with everyone that came in. Darn near everyone that saw it thought it would make a wonderful gift and they want to purchase one for someone in their family. I have a list of people wanting one once I figure out the errors of my ways.
Chuck
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ULS M-360 50 Watt, Corel X3, Signlab 7.1, Photograv 2.0, Adobe CS3, Summa D-60, Sandblasting (for engraving Granite Monuments/Memorials)