Hi, I was just reading through the updated manual, and I saw that there is a design for the cardboard insulator now. (Mine just came with a blank square) My bed heats up dramatically more in the middle than at the corners, and I suspect you have mitigated this problem with the holes that allow the bed/thermistor to cool more in the center.
Can somebody post the file for this? I can cut out my own, but it would be nice to make it 'official' while I'm doing it.
No laser here, but I can throw it on the CNC and it should come out alright.