Ender 3 dual lead screw mod

thingiverse

THIS MOD IS DESIGNED FOR USE WITH A SKR 1.3 AND 5 STEPPER DRIVERS.\r\nIF YOU WANT TO DO THIS WITH THE STANDARD BOARD, THEN YOU WILL NEED TO GET THE PARTS LISTED BELOW.\r\nUpdate 02/09/19\r\nI've Shortened the Stepper Mount as I Found the New Z Mount Bracket Hit It Before the Nozzle Was Just Above the Bed.\r\nUPDATE 19/08/2019\r\nI Found Another Way of Using the Standard Board. You'll Need a Donor Stepper Wire.\r\nhttps://www.youtube.com/watch?v=yVoJO-2pO9c\r\nCredit Goes to TH3D \r\n\r\nwww.amazon.com/dp/B07DMCT1V9/ref=cm_sw_r_cp_apa_i_hZxwDbP324DHV\r\n\r\nPSU FRONT BRACKET AND GANTRY ADAPTER WERE MADE BY SCUDDY\r\n\r\nUPDATE: WITH A SINGLE A4988 YOU NEED TO INCREASE THE VREF TO 1V, PLEASE BE CAREFUL WHEN DOING THIS, DON'T MESSAGE ME IF YOU BLOW THE DRIVER.\r\n\r\nHardware Needed.\r\nAll Printed Parts\r\nT8 2mm Pitch 400mm Long Lead Screw\r\n8-5mm Coupler\r\nM4x8mm For the PSU Offset Brackets.\r\n M4x6mm Screw to Secure the Front PSU Bracket to the PSU. You Can't Use the Stock Mounting Screw Because It's Too Short.\r\nM5x50mm Screws to Mount the Second Z Bracket. You Will Reuse the Stock M5 Lock Nuts.\r\n\r\n2-15mm M3 Screw to Attach Mount to Stepper.\r\n2-10mm M4 and T-Nuts to Attach Mount to Extrusion.\r\n\r\nRAISE Z TO 100MM\r\nMove PSU Away from Printer. \r\nThen Disassemble the Z Axis.\r\nKeep Everything in Order From What You Take Off.\r\nAttach Z Coupler Screw into Printed Z Plate with Four M3*15 Screws and Nuts.\r\n\r\nPlace Three M5*50 Bolts Through the Front Z Plate.\r\nThen Replace Original Spacer, Roller Then the Printed Spacer Eccentric Nut on the Inner Side Then the Rear Z Plate.\r\n \r\nUsing the Printed Mount Attach the Stepper to the Extrusion at the Bottom.\r\nAttach Coupler.\r\nNOW HOME THE Z\r\nLube New Lead Screw (I Use Vaseline) and Place into Position \r\nTighten the Coupler Screws.\r\n\r\nNow the Bit You Have to Be Really Careful With.\r\nTake the Bottom Off the PSU (TWO ALLAN BOLTS)\r\nYou Should See a Pinout Diagram of the V and V- to the Left Side (Don't Touch the Right Side It Will Kill You!!!)\r\n\r\nPlace Negative Probe of Multimeter on Correct Pin.\r\nNow Turn On the PSU Connected to the Printer.\r\n\r\nOpen Up the Mainboard on the Printer, You Want to Look for the Potentiometer Screw Next to the Z Driver.\r\nTurn it Till You Reach 1 Volt. If You Blow Your Driver I'm Not Responsible.\r\n\r\nYou Now Need to Follow TH3D's Video if You're Doing This with the A Board That's Got One Driver.\r\nFollow the Video for the SKR1.3 and MKS GEN L, and Ignore the Last Three Steps.\r\n\r\nOnce Everything Is Connected, You Now Have to Level the Z Axis. This Will Be Done by Removing the New Lead Screw and Homing the Z. This Should Only Need to Be Done if You Missed the Step Above.\r\n\r\nAll Videos and STL Credits Go to Their Creators. The Only Thing I Designed Here Was the Stepper Mount and the Rear PSU Mount.