Qidi Plus 4 Filament Guide (for soft filaments like TPU)
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Ensures a straight feed of filament into the printer
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Made a V2 version with an alignment block that stabilizes the position of the guide. Now there is less movement and shifting, particularly when printing grippy (TPU) filament.
V2 is the recommended version!
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The Qidi Plus 4 is really a terrific piece of hardware. I mostly use it for printing stuff from PETG or ABS/ASA. However, when using soft filaments like TPU, the stock setup is somewhat less than ideal because the filament (coming from the top) will be pulled straight into the printer, rubbing along the intake in the process which leads to wear and collects abrasion from the filament right at said intake.
In order to feed even soft filaments in a straight line, I have devised this part which guides the filament and allows it to go nearly horizontally into the filament inlet. After several 24+ hour print jobs with TPU, I can tell that not only does it do its job well but also seemingly improves the print quality (because of a more constant feed?) when using such filaments.
Printing TPU, it is recommended to either leave the printer door open or lift the top cover a few inches so warm air can get out of the enclosure. In order to accomodate a propped-open lild, I have made a cut-out in my filament guide so that it doesn't collide with the open lid.
Instructions for printing (I use Orca Slicer):
- Doesn't need particularly strong material. (I normally use PETG.)
- Enable supports!
- Use at least 3 layers for walls!
- Avoid crossing walls! (I always enable this one.)
Happy Printing!