OK. 2 questions... 1. At our school, we have no donuts. (Neither the pastry, nor the lighting accessory) But, we have printer's tin, and I also have some tin from a frozen lasagna my mom made. I have searched various places on the internet, and could find the size of the square to make, but could not find the size of the hole. I need to know how big the hole should be on an ETC Src 4 ERS. Also, I would like to make the donut out of the lasagna tin material, if it will sustain the heat. (we just want to make 1 for the show right now, but maybe more) If the lasagna tin material is not durable enough to withstand the temperature at the gobo slot, then I would make one out of printer's tin, but only if I have to. 2. I have heard of people using tranparencies printed off to use as gobos for Selecon lights. (they put it in the gel slot) So, I was wondering, can this be done with the ETC Src 4 ERS? I know Selecon fixtures are a lot cooler because of the MCM, but the ETC lights are hotter. Can it withstand the heat, and can it be focused enough to get a nice image? Also, how long would it take to burn out...?