This is a cool website detailing the fabrication of replacement arcade game parts. Its interesting to note the use of PETG as the material selection. I guess it makes sense as its thermoforming range is pretty high, as contrasted with the narrow temperature range of ABS. I don’t think using ones home oven is a good idea though, as the plasticizers outgas, and no doubt serve to contaminate ones oven. Then again, a self clean cycle would no doubt remove them, but then one has the potential for toxic fumes to deal with. Even the thermoforming temps cause some level of fumes, which no doubt should be exhausted outside, rather than into ones kitchen.