A few things for a regulated-temp, vacuum hold-down hotplate I'm making. Hopefully to be able to non-destructively disassemble an iPad Mini 3 and other such glued-together devices. Most of the hotplate bits are salvaged stuff I had lying around, like the setpoint controller, timer. heating base plate, SSR, buttons, etc. But for the construction, assorted mechanical stuff:
* Sheet of 6mm thick aluminum. An offcut.
* Two sheets of silicon bonded mica. One 5mm thick, the other 3mm. Also offcuts. I only needed a little of this, but think it's bound to be useful for other things. Expensive stuff - that's $120 worth in the photo. Biggest problem is how to cut it. Like mica washers it delaminates very easily.
* Tube of high-temp (300 C) silicone sealant.
* Bunch of stainless steel M4 & M5 screws, mostly button head hex.
* An M4 taper tap, to replace the one I ground the end off to make an absolute bottoming tap, for blind threaded holes in the 6mm aluminum sheet.