Many of my Camera Trigger project experiments were made significantly easier after picking up a 3D printer. The one I opted for was a FlashForge Finder, mainly because of its ease of setup, the dropping price and a recommendation from a colleague who already had one. Overall, I've been quite happy with it but the recurring corner warping was an issue that detracted from an otherwise good product. The ideal solution would be to replace the bed with a heated one, and some people have apparently done that successfully, but for such a sleek bit of kit it seems a bit of a kludge. There are numerous DIY kits that would be better suited to that kind of hacking. A reply in this reddit post states the answer to the warping issue in capitals, so it must be correct ;-) MAKE SURE YOUR BED IS COMPLETELY FLAT AND LEVEL. biggest improvement for me right there. OK, sounds good. Now to figure out how to do that.