Ultibots/Micro Extruder
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Release status: working
| Description | Micro Extruder for PG35L motors. Derived from TrinityLabs Micro Extruder with ideas from Okatake, Scotty Mason and some ideas from me.
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| License | CCSA
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Contents
Introduction
THIS PAGE IS BEING DERIVED FROM BRIAN'S EXCELLENT EXAMPLE PAGE. ALL OF BRIAN'S TEXT AND IMAGES WILL BE REPLACED!
The Ultibots PG35L Micro Extruder V5 - For J-Head is the most recent version designed for short and long shaft PG35L-048 motors. This version has 2 integrated bearing to appose idler tension and minimize any shaft wobble. Also, this body has a snap-in slot for a J-Head hot end which eliminates the aluminum slot plate. This Micro Extruder has been tested on MendelMax and Prusa.
Visit Ultibots for Hobbed Drive Gears and Bearings. MendelMax Kits, Printed Parts, Filament, Electronics, and More...
Advantages
- Reliable
- Light weight
- Allows higher X axis speeds
- Reduces skipped steps
- Inexpensive
Disadvantages
- PG35L & Drive Gear wear with months of daily use and need to be replaced
- Motor torque needs precise tweeking with Pololu type motor drivers
Parts List
- PG35L-048 Motor (x1)
- Drive Gear (x1)
- M3x30 bolts and M3 jam nuts for the idler (x2)
- M3x25 bolts and M3 jam nuts for the motor mount (x2)
- 624ZZ bearings for internal body (x2)
- 624ZZ bearings for idler (x1)
- M4x20 bolts and M4 jam nuts for the idler bearing (x1)
- M4 washers either side of idler bearing (x2)
- M4-20 bolts and M4 jam nuts for the internal bearings (x2)
- M4-10 bolts and M4 jam nuts to secure to x-carriage (x2)
- M4 washers either side of internal bearings (x4)
Micro Extruder V1
Summary: Our First Micro Extruder that was derived from the Trinity Labs [1] TrinityLabs Micro Extruder 1.0. Advantages
- The body is stronger and has M3 nut slots that doesn't penetrate the entire body.
Source PG35L Micro Extruder V1 - For J-Head
Micro Extruder V2
Summary: Added a hollow set-screw to retain the PTFE liner.
Mk V-BV
Summary: As the old thermistor was discontinued, another thermistor was substituted.
| Quantity | Part | Description | Part Number |
| 1 | J-Head Nozzle (v4.1) | Machined Brass Nozzle/Heater Combination, Version 4 | |
| 1 | Nozzle Holder (v5) | Machined PEEK Nozzle Holder, Version 5 | |
| 1 | PTFE liner (v2) | 1/8" ID, 1/4" OD PTFE tubing, Version 2 | McMaster-Carr 5033K31 |
| 1 | Heater Resistor | Axial, 5.6 ohm, 1%, 5W | UB5C-5.6-ND |
| 1 | Thermistor 5 | Semitec | 104GT-2 |
| 1 | Hollow-lock socket set screw | 5/16-24 hollow-lock socket set screw | McMaster-Carr 91301A150 |
| 1 | Flat Washer | 1/4" OD Flat Washer | McMaster-Carr 98032A436 |
Weights
| Component | Weight | Notes |
| PG35L-048 | 116.2 grams | |
| Micro Extruder V5 | 26.5 grams | Just Body & Idler |
| Drive Gear | 8.5 grams | 3mm |
| V5 Hardware | 31.2 grams | |
| Heat Sink | 9.0 grams |
