ImpulseRC Apex (Clone) Snap-On Arm Bumpers

thingiverse

I really don't like the idea of an armrest with the TPU squashed in, because the screws can't be tightened all the way. I'd prefer a snap-on bumper, but I couldn't find one, which is surprising given the frame's reputation. So here is my design: ImpulseRC Apex Arm Bumper, with half-cover and full-cover, snap-on right in (for 5.5mm arm thickness -- which is common for the clone designs). Weight is not compromised. * 4*10mm cap-head screws + Original plastic skid = 5.3g * 4*8 mm cap-head screws + half cover = 5.2g (2 walls + 15% infill) * 4*8 mm cap-head screws + full cover = 6.3g The half cover is still perfect for any heavy impact, but if you also want to do skid tricks go for the full cover.