Wanhao i3 cable protector

by tsimon57, published

Wanhao i3 cable protector by tsimon57 Dec 22, 2015
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On my Monoprice Maker Select IIP (Wanhao i3) the bed heater cable would snag on a metal tab on the base as the print bed moved back and forth. This part slips over the tab and provides a smooth sloped surface for the cable to slide over - preventing the cable from catching.

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Wanhao i3


Doesn't Matter


Doesn't Matter






3 layers on all surfaces.

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Designed with Onshape.com

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I've posted an alternative to this here: http://www.thingiverse.com/thing:2316611

Wanhao Cable Guard i3 Duplicator and Monoprice Maker Select V2

The print as-is fits loosely over the metal ends, an can be knocked off easily. But placing a small square of gaffer's tape around the metal ends before adding the protector gives a tight, but still removable fit.

Had to grind it in order to stop it from touching my thumbwheels. Also needed to add so tape to make the fit tighter.

I really have to recommend people don't use this. Any time you do a "full" bed leveling (fully tightening screws, homing, leveling) you need to remove these. I never remember to remove them, and so on at least three occasions I've tried to home the Y axis with the bed fully tightened and caused horrible grinding noises that I am sure were terrible for something. My recommendation is to do something to make the cord itself smoother and less likely to catch (wrap it with electrical tape, maybe). Alternatively, make some sort of arm that extends backwards from the unit to help guide the cord down the middle.

FYI, for those who have the wingnuts or bigger leveling thumbwheels check clearance with this mod before using it. I didn't and was greeted by an awful noise of the bed trying to move in the Y direction while stuck on the cable protector due to interference with the thumbwheel.

Comments deleted.

That is my concern. i have the thumbwheels ...

I ended up zip-tying the cable so it stays centered and so far no snags. Whether there is interference will depend on the diameter of the thumbwheels. I think going with a zip-tie is safer though.

My cable wasn't really catching but was rubbing so thought I would use this. Thanks for taking the time to create it

Printed and installed.
FYI, someone mentioned on the Thingiverse group for Wanhao that the turning the printbed once might also solve the problem, as the cable then is pushed upwards, instead of downwards.
Might be worth a try if you're taking off the printbed.

Adding those won't hurt, though.

Thank you. Have been having same issue. Will try this.