Heat bed cable chain for Prusa i4

Bed Cable chain for Prusa i4.

I was worried that the heating bed cable is not fixed inside the printer and under the bed itself. I finded solutions for prusa i3, but for my printer is gone. Decided to do.

Single chains need 30 pieces

For realization need skills:
- Soldering,
- Work with drill,
- Patience
- Hands are not out of the ass :) Just kidding :)

Need:
- 4 screws M3 7mm, 2 - M4 10mm
- tap for M3
- drill bit 2.5 mm for tap
- Heat-shrink tubing

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