Simon's hex coupler
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Published on August 25, 2012
Derived from
Eric's Improved Z Axis Coupler Rev3
by PharaohABQ
Description
Few more mods to Eric's awesome coupler idea. Made it hex shape so you can get a shifter (adjustable spanner) onto it - and yes it can take the torque, also added three grub screws at the top. This prints side-ways without the need for supports and came out really well.
Instructions
Just print it.
3 perimeters, 3 layers, 0.35 nozzle, 0.25mm layer height, 25% infill at 90 degrees fill angle.
Motor end is printed at 5mm so clean it out with a 5mm drill.
Threaded rod end is printed at 9mm so should be a comfortable fit as it comes off the printer.
M8 nut fits inside the open end of the hex coupler.
Run another M8 nut up from below with a washer and tighten it as much as you dare.
3 perimeters, 3 layers, 0.35 nozzle, 0.25mm layer height, 25% infill at 90 degrees fill angle.
Motor end is printed at 5mm so clean it out with a 5mm drill.
Threaded rod end is printed at 9mm so should be a comfortable fit as it comes off the printer.
M8 nut fits inside the open end of the hex coupler.
Run another M8 nut up from below with a washer and tighten it as much as you dare.
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PharaohABQ
on
January 8, 2013
said:
Nice Upgrades. I am raising an 8mo old now so My design time has been limited. I like the 3 grubs, my single kept tearing out. I also wanted to get rid of the support. The next version I was thinking would use a slot through the motor side and two long screws/nuts to squeeze the slot to clamp down on the motor shaft. should handle massive torque that way. Anyhow. Good job on this!
Wired1
on
September 2, 2012
said:
Version c has built-in flex - not sure how well this will last but it prints out nicely.
License
Simon's hex coupler by Wired1 is licensed under the Attribution - Non-Commercial - Creative Commons license.
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Hey Wired1,
just printed your coupler but I can't get a standard M8 nut into the opening. What type of nut are you using for this?
Thanks in Advance
kugel
I used a standard M8 nut as well and it is a snug fit. Might be a variation in nut sizes around the globe or might be tweakable in Slic3r with the extrusion multiplier figure. I guess you measured your filament with a vernier? How far off fitting is it?