Another toolhead umbilical for Voron 2.4
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Voron 2.4 cable holders
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Another toolhead umbilical for Voron 2.4
Here's the second version of my umbilical mount. This version was designed in collaboration with @stephzic.
 | |
|---|---|
| This is the previous version ^^ | Current version during developpement Courtesy of @stephzic |
How does it differ from the mount on the A motor?
Initially, this design was not intended for CANbus, but a 16-wire cable. However, a CAN cable can be used perfectly well. The 2 parts of the mount hold the cable taut between the top and bottom extrusions. The cable then enters the electrical cabinet next to the Z chain.
Pros:
- the cable does not interfere with the bowden tube when the carriage is in the up position
- the mount is suitable for all cable diameters (4.5mm to 10mm)
- the cable does not run alongside the steppers (limits EMI)
- rear panel remains easy to remove
Cons:
- haven't found any yet ^^
Changelog
- V1 : initial version
- V2 :
- Stronger top holder,
- review geometry,
- maintain clamp in place,
- allow to use most exhaust cover,
- suitable for 4.5 to 10mm cable dia,
- add a bowden guide (by @stephzic),
- review bottom holder geometry to suit No-chain mod (to come)
Printed parts
The main parts are printed in ABS with VORON specifications (40% infill, 4 perimeters, ...). The cable-holding inserts are made of TPU95A (tested for several months without issue in a 65°C chamber). An ABS version of the insert (untested yet) is available in STLs.
Bill of materials
| Hardware | Qty | notes |
|---|---|---|
| M3x16 BHCS | 2 | |
| M5x10 BHCS | 2 | |
| M3x4x5 heated insert | 1 | |
| M3 square nut | 1 | DIN562 |
| M5 T-nut | 2 | |
| F623RS Bearing | 2 | for bowden guide |
| M3x20 BHCS | 1 | for bowden guide |
| M3 hex nut | 1 | for bowden guide |
Assembly instructions
Top holder
(Optional bowden holder)
Mount this assembly on the center of the top rear extrusion with a M5x10 screw
Bottom holder
DO NOT mount it on the gantry !
Mount this assembly on the center of the bottom rear extrusion with a M5x10 screw.
Use TPU or ABS insert in the holder according to your cable diameter.
Notes on Umbilical cable
As umbilical, I use a 14-wire harness from LDO + 2 22AWG wire, MDPC-X Medium cable sleave and heat shrink. All together it measures 8 mm in diameter
Associated mods
CAD file
see https://github.com/fbeauKmi/V2.3934/tree/main/mods
Aknowledgements
@stephzic for the great help on the developpement of this mod and his contribution. bowden guide was inspired by Galvanic bowden tube guide
Many thanks to the French Voron Community to support me everyday ^^