Geeetech Prusa I3x Z Axis Wobble Fix
Description
I Modified This Design Slightly To Include A Recess For A Ptfe Bearing Plate. Without The Plate The Bracket Is In Direct Contact With The Acrylic Structure May Wear Or Have Some Unwanted Friction. The Ptfe I Used Was From A Sheet 1.5Mm Thick. The Bearing Plate Is 17Mm X 17 Mm With A 9Mm Diameter Hole Through The Centre. Ptfe Sheet Is Readily Available From On-Line Stores For A Few Pounds, And Has A Very Low Coefficient Of Friction. To Ensure These Brackets Fit On The Geeetech Prusa I3X You Need To Ensure The Couplers Are Lowered As Much As They Can Go, Otherwise The Bracket Screws Will Foul The Couplers Before The Z Axis Reaches Z0. You Can Re-Use The Screws From The Original Brass Fittings And Use Left-Over Nuts From The Original Kit. If You Loosen The Coupler And Fit A Hex Key To The Lower Grub-Screw Then Drop This Down As Low As It Can Go Before Tightening Then It Will Not Foul. I Took The Opportunity To Also Replace The Couplers With Ones That Aren'T Split And Have 2 Grub-Screws For Each Shaft - These Run A Lot Truer Which Eliminates Some Wobble. I Also Replaced The Sloppy Z-Axis 8Mm Threaded Bar With 8Mm Leadscrews With 1Mm Lead. This Thing Was Made With Tinkercad. Edit It Online Https://Www.Tinkercad.Com/Things/D6Zat9Jsmej You May Need To Run A Drill Bit Down Through The Centre To Allow The Brass Nuts To Fit Snugly, And Use A Small File To Open Up The Inside Width Of The 'Jaws' So They Slide Smoothly Over The 8Mm Rods.
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