Creality Hot End Scale Model

Scale model cross-section of the Creality hot end from the Creality printers. 
 

Parts Included:

• PC4-M10 bowden tube coupling
  • Coupling body
  • Coupling collet
• Radiator
  • Radiator body
  • M3x3 grub screw
• Heat Break
• Heating Block
  • Block body
  • Heater cartridge
  • M3x3 grub screw
  • Thermistor
  • M3x4 pan head screw
  • M3x18 countersunk screw L
  • M3x18 countersunk screw R
• MK8 Nozzle
• PTFE Tube

I measured and modelled this to scale as best I could using the original parts from one of our Ender-3s, however, there may be different parts depending on where the hot end parts are sourced.

Some screws were pulled from the McMaster Carr parts library to save time.

This is not designed for manufacturing usable parts, and I haven't found solid info on who to credit regarding the origin of the different parts.

Files:

• STL's of all the parts
• 3MF file with PrusaSlicer settings.
• F3D file. Nearly all my measurements are included in the parameters window.
• STEP file for the non-fusion users.

Before Printing

First off, the sizes are true to the actual parts. Importing them into PrusaSlicer gives a message about small part sizes, asking to convert from imperial to metric units. 

This is modelled in metric, it is just really small.

I printed at 400% scale, which has worked well.

All parts were printed in PLA, print orientation varies depending on the part. I used the default settings for Ender-3 printers using supports where necessary.

After Printing

For the thermistor wire, I've used some white 3mm wire.

For the heater, I used some red 3mm with a few extra layers of red heat shrink for the thick insulation at the base. 

These were set in place with a bunch of superglue.

All the hex screws work with a 5.5mm or 7/32" hex key. The Philips head screw works fine with a large flathead. 

Scaled up, no extra tolerance or sanding was needed.