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Hi all, I'm in the process of designing a melt-tip drill for boring a hole in ice. It looks very similar to the design below (not mine - from the university of aachen, who have been as of yet unresponsive). The copper tip at the bottom is heated by a series of heating elements and needs to be insulated from an aluminum housing. I have been planning on using a Teflon (PTFE) ring about 3mm thick (corresponding to the part in yellow below). I'm trying to figure out how to join it to the copper --- ideally without the use of fasteners, which could cause problems during drilling. Is this something that can simply be tapped and screwed in? Any strong opinions against this? Then comes the challenge of mounting this assembly to an aluminum housing. Contact between the copper and aluminum should be avoided. The aluminum housing tube is also 3mm thick. From my understanding, Teflon is notoriously hard to bond to. Would you trust some sort of industrial adhesive between Teflon and Aluminum with a 3mm surface? Thanks for any comments or suggestions! Ready to start testing some approaches, but figured I'd avoid making errors by asking you all. :) Best, [link] [comments] |
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