SDHX Extruder for FLSun Deltas (SR, QQS, ...)

cults3d

Big thanks to @Threewheelz(step), @NKBRISSON2(PackQQS), @Nissenko(HouseCaseSR) and @WarlockSVG(FanCase), I was able to complete my project of a lightweight, compact, accurate and strong direct drive extruder. 2022/09/27: Assembly instructions in photos on Thingiverse ;-) https://www.thingiverse.com/thing:5027588 2022/04/20: Custom case 5015 follow this link https://cults3d.com/en/3d-model/tool/qqs-pro-5015-caseadapter 2022/03/31: Update Version V1 for SR. Now two versions for QQSPro and SR printer. To make this assembly, you need to buy a BMG style extruder parts pack or use parts from an older BMG extruder (BMG, Trianglelab) and a Nema14 stepper motor like the Mini-Sherpa or Orbiter model, incorporating a 10 tooth gear. Improvement: - Simple, compact, light and strong. - Short filament path (no more Bowden system and its retraction noises) - Lower center of gravity. BMG parts (Green): - Drive shaft with a large plastic gear. - Drive pinion that slides on the drive shaft and is fixed by a screw on the flat of the drive shaft. - 2nd drive pinion with its two needle bearings inside (locking door). - 2 MR85 bearings on which the drive shaft turns (one on the back plate and the other on the top cover). - Knurled screw and spring (Washer optional) to adjust the pressure of the 2nd gear on the filament. Mounting parts: - (2) hinge pins D3mmxL20mm (gear on latch + latch support) or 3mm diameter rod (ex. pop nail rivet). - (1) M3 square or hex nut (holding knurled screw) - (2) M3 x 25mm (top cover to back plate nut) - (2) M3 hex nut (back plate) - (1) M3 x 25mm (NEMA14 motor mount) - (1) M3 x 10mm (NEMA14 motor mount) - (2) M3 x 18mm fastener (back plate on effector cage). Other parts: - The top of the filament inlet allows for the integration of a Bowden clamp to hold the PTFE tube. - (11) 3mm Inserts for the custom effector or (3) for the QQS cage or (2) for the SR case. - (2) Blower fan 5015 with (4) M4 x 20mm for custom effector (QQS). - some PTFE tube for junction - (3) Bowden Tube Collet. - (1) a Nema14 stepper motor LDO-36STH17-1004AHG Instruction for firmware and slicer. Part of the Marlin firmware or use my firmware with the "X" option in the header. Sources on GitHub: https://github.com/Foxies-CSTL/Marlin_2.1.x/tree/Firmwares . Without UART mode: Ajust Vref Motor stepper driver = 380mv/450mV Send the 3 commands via a terminal: M603 L80.0000 U100.0000; length unload/load filament M92 E720; eStep M500; memorize in EEPROM With UART mode: Send the 3 commands via a terminal: M603 L80.0000 U100.0000; length unload/load filament M92 E720; eStep M906 T0 E350; mA for NEMA14 M204 P2000 S1500;printing and travel acceleration M500; memorize in EEPROM Wiring for Nema14 to Old Nema17: => Yellow=Green, => Red=Blue, => Blue=Black, => Green=Red. to have no change (direction) in the QQSP firmware. or => Yellow=Red, => Red=Black, => Blue=Blue, => Green=Green. to have no change (direction) in the SR firmware. Slicer part: Length Retraction = 0.4/1mm (PLA) Retraction Speed: 30/40 Linear Advance (in GCode filament Part): M900 K0.05; for PLA M900 K0; for TPU M900 K0.08 ;for PETG M900 K0.04; for ASA/ABS Note for Custom effector: M665 R134.00 (QQSPro) DON'T FORGET to adjust your eSteps and calculate your flow rate for each filament if you want beautiful prints. HAPPY PRINTING