GepRC Mark5 Front bumper with pressure spacers
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I've made a Mark5 bumper variant with polycarbonate spacers that reduce TPU compression, focusing pressure on the frame.
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- Creative Commons — Attribution
The front TPU bumper on the Mark5 often gets excessively compressed to ensure a tight fit against the frame, a practice that's always concerned me. To address this, I've developed a variant of the bumper that includes printable spacers. I chose polycarbonate for its strength, which effectively redirects most of the pressure onto the carbon fibre frame and the aluminum stand-offs.
The spacers, being 0.2mm shorter than the TPU bumper, ensure only minimal force is exerted on the TPU. To further enhance security, I highly recommend adding washers. For my own build, I opted for M3 aluminum washers, which worked perfectly.