Borosilicate glass locking for heatbed

thingiverse

I've been thinking for a while how I can fit a larger borosilicate glass to my 200x200mm heatbed. I mostly print PLA so it is not critical if some parts of the print are not heated. I modified my printer to have a larger print area (https://www.thingiverse.com/thing:2959954) but I still cannot print things larger than my standard Geeetech glass. So, I decided it is time to upgrade the print bed and this is what I came up with... First problem was the screw heads that adjust the levelling of the bed...I decided to countersink the PCB of the bed so they are flush with everything else. The second and most important, was how to fix the glass (the original one is held in place by 4 paper clips as many others), with the possibility of easily remove it. As the glass is flat, without holes or screws that can catch on and it greatly exceed the PCB size, I first didn't know how to aspproach that but I got this idea and here it is... As PLA do not require high bed temperature this should not cause issues, but the bit that touch the PCB could be made of high temperature filament, aluminum, wood, fiberglass or other materials, it is a simple part that would not take too long to be shaped even by hand from a square piece of metal. Silicone sealant should be more than enough for glueing the part to the glass, plus it is easily removable, but if you prefer you can use epoxy or any other glue you consider more appropriate (Please share the info if you know of specialty glues that may be more appropriate). You can change the dimensions of the parts to adapt to your needs, just try to have a good size bonding surface to ensure stiffness. The bonding plate thickness should be thinner than the PCB thickness. ---------------------------------------------------------------------------------------------------- I created these links where you can find all common filaments and spare parts at the best prices. These are just links to selected eBay and Aliexpress items, where I normally buy spare parts and materials for my printer, prices are excellent and products are good. If you buy something from here you will support me a little bit to make these projects. <a target="_blank" href="http://rover.ebay.com/rover/1/711-53200-19255-0/1?icep_ff3=9&pub=5575414000&toolid=10001&campid=5338353127&customid=PLA&icep_uq=pla+filament+1kg&icep_sellerId=&icep_ex_kw=&icep_sortBy=12&icep_catId=&icep_minPrice=&icep_maxPrice=&ipn=psmain&icep_vectorid=229466&kwid=902099&mtid=824&kw=lg">1Kg PLA Filament - eBay</a><src="http://rover.ebay.com/roverimp/1/711-53200-19255-0/1?ff3=9&pub=5575414000&toolid=10001&campid=5338353127&customid=PLA&uq=pla+filament+1kg&mpt=[CACHEBUSTER]"> <a target="_blank" href="http://rover.ebay.com/rover/1/711-53200-19255-0/1?icep_ff3=9&pub=5575414000&toolid=10001&campid=5338353127&customid=ABS&icep_uq=abs+filament+1kg&icep_sellerId=&icep_ex_kw=&icep_sortBy=12&icep_catId=&icep_minPrice=&icep_maxPrice=&ipn=psmain&icep_vectorid=229466&kwid=902099&mtid=824&kw=lg">1Kg ABS Filament - eBay</a><src="http://rover.ebay.com/roverimp/1/711-53200-19255-0/1?ff3=9&pub=5575414000&toolid=10001&campid=5338353127&customid=ABS&uq=abs+filament+1kg&mpt=[CACHEBUSTER]"> <a target="_blank" href="http://rover.ebay.com/rover/1/711-53200-19255-0/1?icep_ff3=9&pub=5575414000&toolid=10001&campid=5338353127&customid=TPU&icep_uq=tpu+filament+1kg&icep_sellerId=&icep_ex_kw=&icep_sortBy=12&icep_catId=&icep_minPrice=&icep_maxPrice=&ipn=psmain&icep_vectorid=229466&kwid=902099&mtid=824&kw=lg">1Kg TPU Filament - 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