Creality Cr-200b Toolheads (OLD VERSION)

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Hello I created some Toolheads for the Creality Cr-200b. These Parts function already pretty well and are installed already on my Cr-200b for longtime testing. I redesigned the original head almost identical to keep it simple and i wanted to safe weight on the x and y axis for smoother and easier movements. And also wanted to install a direct drive on the Toolhead.

For now there is no restriction to the original build size! 

Partcooling fan is a 4020 Radial fan. And this here is a fanholder for the simple tool head.

4020 blower fan CR-200B by bastelgarage - Thingiverse

To use a directdrive Extruder on the three toolheads you need a V6 Hotend fitting and screw it into the top of the part. Then you can clamp a lot of extrudes on it for example bmg clones or the creality e-fit extruder. Here some examples: 

Redrex Dual Drive Extruder  Amazon.de

E-Fit Direkt-Extruder Kit (creality.com)

If you modify the .step files its possible to install other extruders as well there is enough space.

I use the e-fit extruder because I had one laying around . Dont forget we are limited with the max height of the extruder with the top panel on. If you leave it of there should be no problem. I cant verify it on other extruders.  

If you want to use the direct drive option with other stepper motors and the stock marlin software from creality like i did there are two options: 

Option 1: 

You need to create a txt file namend "estep"with the following commands.

M502
M92 E456.405
M500

M502 is to clear the eeprom on the mainboard

M92 E…….. is to set your e-steps for the extruder

M500 safe to eeprom. 

Safe and now rename the estep.txt file and delete the .txt and rename it to estep.gcode. Keep the gcode on your sd-card and start it once if should be finished after 10sec. And keep the gcode on the sd card becuase the mainboard looses the e-steps sometime.

Option 2:

If you want to go completly safe put the commands in your start gcode and your safe and dont need the file on the sd-card. But you should not forget if you use a diffrent slicer you must put it there also if not the extruder wont work correctly. 

And a small reminder please reduce your current on the extruder stepper potentiometer to 1.0 Volts. Even with the stock motor. If you keep it on 1.4 Volts the extruder motors will get hot.

Printing:

You dont need to cut or drill anything with these Parts they should be plug and play if printed correctly and without too much shrinking. (ABS/ASA) 

The Parts are designed to be easy printable. Use 0.2 layer height, 4 walls , 5 top and bottom with 30~40% Infill. You sould be able to get these parts to function with 20% Infill aswell because the stock marlin settings do not allow much accel. 

You should get some m3 heatset inserts and m3 screws for the toolhead to mount the side plate or/and the bl/cr-touch easily/ or the fan mount

The links are no affiliate links!

Hardware Parts Used for V2

1x Spark Mk8 Hotend (normal flow hotend) or Hotends within MK8 Standard

1x BMG clone Extruder

1x Nema 17 Pancake Motor 

1x 1.5m 4pin Nema 17 Cable

1x 4010 24V Dual Bearing Fan for the Hotend Cooling

2x 4020 24V Dual Bearing Radial Fans for Part Cooling 

Set of JST/SYP Connectors (easier to connect cables)

2x LM08LUU Bearings 

Mixed Bag of M3 Screws

M3x4.6x4 Heatset Inserts (short one 4.6mm wide, 4mm deep)

2m PTFE Tubes (60cm for holding the Cables, 80cm for Filament guide)

Zipties

Liquid Isolating Tape (optional)

ASA Filament or ABS

Tools:

Crimping Tools 

Cutting Tools

Multimeter

Hex-Screw-Tools