First, thank you to Pocket NC for creating the FR4 Machine shield! Visit them at: http://www.pocketnc.com.
This is an experimental flexible coupler that, if properly made, can create a smooth operation of movement in the FR4 and minimize unintended crashes or impacts with end-stops. May also be used as an external axis rod nub, and used to manipulate an axis rod without getting your fingers messy when grabbing the rod directly.
This model should be printed with a properly calibrated FDM printer using Makerflex or Ninjaflex filaments only. For safe, experimental testing only by adults 18 years of age or older. Use at your own risk in a safe environment away from face and hands, as well as all minors, goats, cows and chickens, and llamas. Let me know what you think of this alternative coupler for the FR4 machine shield!
Filament used: Makergeeks Makerflex (lemon flavor)
Print speed: This filament should be reduced to 20 mm/s. And bottom layer set to 10 mm/s.
Retraction speed: 40 mm/s
Retraction distance: 2 mm
BUT OF COURSE,
Adjust all settings & salt to taste. Enjoy!