Derpa-Extruder

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A super lightweight BMG extruder

Derpa-Extruder 최신버젼 다운로드

최종 버전 다운로드 (.zip)

// repository documentation

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# Derpa Extruder
 
A lightweight extruder using a BMG + a 70g LDO Nema14 motor with integrated 10T pinion.  Printed parts total 4g.  Total weight of Derpa + Nema 14 Motor + BMG is 140g.  A BMG + 25mm pancake is approx 220g.

The 10 tooth pinion on the LDO motor along with the BMG gear gives a 5.1:1 gear ratio, which is enough to push 14mm^3/s through an e3dv6 with 0.4mm nozzle.  It should be able to push more through a Volcano.

![Image of Derpa Mini](https://github.com/wesc23/Derpa-Mini/blob/master/images/derpa-mini.png?raw=true)
 
 ![Image of Derpa Mini](https://github.com/wesc23/Derpa-Mini/blob/master/images/derpa-mini-rear.png?raw=true) 
 
 [Uses this 70g LDO Nema14 motor](https://www.printedsolid.com/products/ldo-nema-14-motor-ldo-36sth17-1004ahg?variant=32690500370517)

Note, you may have to file off a super tiny bit of the lower ear as it can interfere with the screw holding the BMG together.

STEP and Fusion 360 archive provided.

# BOM
  - Qty 1 BMG
  - Qty 1 [LDO Nema 14 Motor](https://www.printedsolid.com/products/ldo-nema-14-motor-ldo-36sth17-1004ahg?variant=32690500370517)
  - Qty 1 M3x35 SHCS
  - Qty 2 M3x45 SHCS
  - Qty 1 M3x6 SHCS
  - Qty 4 M3x? Screws to mount.

# RRF 3 Settings
```
M906 E300  ; 300 mA current (try 350)
M92 E703   ; steps/mm
M201 E100  ; Accel, Not tuned
M203 E1800 ; Max Speed
M566 E1000 ; 1000 RRF InstantDv
```
# Discord for Derpa-Extruder and CroXY

[Discord Invite](https://discord.gg/ryj6wyx)

# Remixes
bartolomeus has made an [excellent remix of Derpa](https://www.thingiverse.com/thing:4692392) for the Sovol SV01 printer.  His approach uses a ring which attaches the motor to a BMG.  The BMG face mounts to the rest of the toolhead.  It could easily be adapted to a number of other printers.

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