tube wrench extender
thingiverse
Remember the sparkplugex https://www.thingiverse.com/thing:3580859 The sparkplug itself sits so deep within the motor block on the BMW R1100RT that the ordinary tube wrench 16mm/17mm is too short. Along comes the extension handle: print it with only 20% infill, no support required and shove the hex end into the 17mm side of the tube wrench.
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