Solidoodle Filament Guide Valve

by lawsy, published

Solidoodle Filament Guide Valve by lawsy Sep 28, 2012

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This guide suits the original filament holder design on the Solidoodle, but eliminates any tangles with a 'filament valve'. This part can probably be fitted to other printers to prevent tangling.


The Solidoodle 2 design has just been updated to turn the filament holder pipe 90 degrees. This thing suits the original design and performs very reliably.

  1. Print the three parts. You may need to use a thin knife to separate the tip of the filament valve if it has fused together during printing.
  2. Use a small self tapping screw to join the filament guide arm and filament valve support.
  3. Plug in the filament valve to suit the width of the filament roll you are using.
  4. Slide on the assembly to the PVC pipe.
  5. When loading filament, run the strand through the filament valve and enjoy trouble free printing.

EDIT: Correct skp file now added.

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Where do you buy that big of spool of filament?! I've been trying to find sellers online like that forever!

Jun 12, 2014 - Modified Aug 4, 2014

works great! I had to dand to make part go inside another, maybe because my prints are not so precise, but no problem anymore, I can go away from the printer now!

Was happy with it but at the end the printer had to pull filament so hard that the filament sometimes broke itself due to the angle in the Solidoodle. Finally works better if the filament just pass through the rectangle hole of the guide...No need of the third part for me

Works very well, no more struggling with bunched up filament! Had to file down the main hole and widen the valve just a bit to allow filament to pass through easily, but those are both likely due to my only decent quality prints. ;)

This is great. I modified mine so that the arm is cut and the valve is glued on at a 45 degree angle.

I've been having trouble keeping filament from unwinding on new 1kg spools on my Solidoodle even with the 90deg pipe.  Would you be willing to post your design file so I can make a derivative?  I think your filament valve is just the ticket to solve the problem, but I'd like to redesign the arm to work with the 90deg design. 

Great - thanks for the update!

Thanks for the quick upload of the SketchUp file, but is that the right part?  It looks like a different type of guide that is designed to clamp on to 2 rails.

Pretty cool. Works pretty good and was a great improvement, but the 90 pipe on the solidoodle 2 seems to work better.