R3D Flsun I3 Mod Kit Part 1

prusaprinters

R3D Flsun I3 Mod Kit LONG TERM USE UPDATE I've been using the mods in this kit and from parts 2 and 3 ever since I made them back in early 2017. I've had very little issues with the printer and it's pretty much a "turn on and print" printer.. no issues with bed leveling after disabling the stepper motor timeout setting in the firmware. It's been a reliable printer every time I use it from fine 0.04 layer height prints to 0.8 layer height vases up to 120mm/s print speed. Also along the way I added a magnetic flexible build plate which has been a nice improvement in convenience.. as well as a set of TMC2208 drivers which are super quiet. This is part 1 of 3 of my collection of mods for the Flsun I3 printer. This is the most important mod out of all three parts. These mods will help stabilize the X and Z axis and fix z wobble and most layer line issues. It does require hardware upgrades, but they are relatively inexpensive. Use the photo with the ruler as a guideline for spacing. Also, there is about 2-3mm of space between the leadscrew and the motor rod inside the coupler. Don't forget to change the Z_MAX_POS to 255mm like I did and have your first 250mm print stop at 220! :) *Update 5/24/2017 - added photos of a recent print and for the dimensions for the anti-backlash nuts *Update 6/29/2017 - Printing smoothly at 100mm/s. With all the mods in this series, I can easily go up to 120mm/s. https://youtu.be/6qQ_azx2F1E?t=16 Notes on Printed Parts: Top Rods Holder -- These are the top brackets which are modified from the original to have a tighter fit and a hole for the leadscrew. Lead Screw Wobble Brackets -- These use skateboard bearings to keep the leadscrew in a fixed axis and aligned with the top rods holder. XZ Carriages fitted for Anti-Backlash Nuts - Left & Right -- These will fit anti-backlash nuts and igus delrin bearings. You can use the steel linear bearings but you may have to sand the holes out a bit. XZ Carriages Original Fittings - Left & Right -- To fit steel bearings and regular nut. Z Limit Switch Mount -- Modified to fit over the Lead Screw Wobble Brackets and for better stability. Hotend X Carriage -- Adjusted fan mounts for better alignment. Modified belt holes for easier mounting. Modified to fit igus bearings. Required Hardware to go along with the printed parts: 2x 370-400mm Lead Screws. I used 400mm because I couldn't find any 370. 2x Skateboard Bearings 2x Anti-Backlash Nuts - see photo for specific dimensions. Fiberglass reinforced belt (optional but highly recommended) It will have less stretch over time. 4x Igus Delrin Linear Bearings (optional) You can use the original steel bearings. I have included the original XZ brackets so you don't have to use the anti-backlash nuts but in order to get the full benefit, I recommend using the modified version. ===================================================== Links to Kit Series Part 1 : http://www.thingiverse.com/thing:2307152 Fixes layer shifting and wobble Highly Recommended Part 2 : http://www.thingiverse.com/thing:2307161 Replacement parts for the acrylic pieces that can/will crack over time. Optional but Recommended Part 3 : http://www.thingiverse.com/thing:2307169 Cosmetic and Recommended Mods to improve overall look and safety. Optional List of original sources that were modified wobble bearing bracket - http://www.thingiverse.com/thing:2008919 Flsun delivered parts Category: 3D Printing