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Tiko Motor Mount Tensioner Clips

by walter, published

Tiko Motor Mount Tensioner Clips by walter Jan 20, 2017
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Summary

These clips can help with loose motor mounts on a Tiko 3D printer. They make sure the motor mounts make contact securely on the rails, otherwise the positioning may be somewhat erratic (at least on my machine). There are also other (more thoroughly tested) fixes you can try on the Tiko forums.

Upper Clips (the small ones)
If you're seeing the same issues with your tiko, this is an easy print for a significant improvement. There are several versions of the upper clips, the larger numbers increase the amount of tension (I'm using 04). You can also scale them to get more fine-tuned adjustment. If they're too tight, there might end up with too much friction to print effectively. These can be attached without any disassembly and should be mounted so the small retaining bump on the inside of the clip is closest to the motor.

Lower Clips (the larger ones)
The larger clips require removing the motor and disassembling them a bit, and I'm not sure it's worth the hassle. I'll probably redesign them when I have a chance, but I figured I'd upload them anyway and so you can try for yourself if you want. They also need a glue dot* or something similar to secure them in place.

Plastic
I printed these clips in PETG, but I think non-transparent ABS will work too. I don't think clips printed in PLA will be useful for more than a couple of days. The clips are designed to be printed with a 0.5mm extrusion width, two shells.

More details at http://thrinter.com/tiko-part-4-fixi…the-motor-mounts/

Printer:
-- Eustathios

Filaments:
-- Atomic Filament Sapphire Blue PETG

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I tried printing the upper clips (the -6 version) in ABS with high infill and 0.30mm layers and I went too far: the hot end never gets low enough to become visible through the clear plastic, and it prints from there...

Comments deleted.

Why do you specifically recommend a non-transparent PLA?
What is the difference between a transparent and non-transparent PLA?

It's specifically transparent ABS that I think would be a problem in this application, I find it tends to craze and eventually crack under load, unless it's really overbuilt. More info on my experiences here: http://thrinter.com/walters-filament-collection-abs/#transparent-abs

I don't think there's too much difference between transparent and opaque PLA, opaque PLA has more colorant, which can affect print quality, but I don't think that's too common.

Thanks for the clarification!

Maybe you could temper the PLA-clip 130°C about 15min. to release tension and make it less brittle?

That's a great idea, I've seen some tests that seem to show that PLA is much stronger and more creep resistant after tempering. I don't expect the brittleness of PLA would be an issue for these clips, they only need to bend a bit to put tension on the motor mounts.

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