Ender-5 Bed Strain Relief

Strain relief for the Ender 5 heat bed wires. Mounted to the carriage using M4x12 or M3x12 + nut. ---- ## 23.2.2019 Version 2 To avoid too much bending the wires if you level up and down higher than normal, i made some changes: * 5mm more distance from bed. * Larger radius. * Only one cable tie. More than +-5mm should now be possible without problems.