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bradcfisher

Angled dry box filament guide

by bradcfisher May 6, 2018
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Hello, nice work!
I just designed a "Parametric Bowden Connector Plug" that would nicely complement your creation:
No more hole on unused position... :)
https://www.thingiverse.com/thing:3572741

Parametric Bowden Connector Plug
by IamSLy

Any chance you could release the design files in Inventor or Fusion 360 format? I'd like to redesign the bolt to try and reduce issues I have getting the filament to feed through successfully.

I actually designed this with Windows 10 3D Builder and OpenSCAD, so I unfortunately don't have either of those formats available. I could post an STL of the plain bolt without the additional threading and hole if that would be helpful.

I do have plans to add a couple variations of the bolt. One permitting 4mm teflon tube to pass entirely through it, and one for 6mm tubing. They both should help reduce friction for 1.75mm filament, though the latter would decrease the effectiveness of the drybox by allowing more air circulation.

This looks amazing, I am building the Lack enclosure now and a huge drybox to be on top of it, I am planning to reverse the angle to point downwards. Do you expect any issues with this?

Pointing the angle downward should work just fine. I would make sure you know approximately the level at which your filament spools will sit and the approximate range of angles the filament will enter the guide for both full and empty spools when determining the vertical placement of the guides. Placing the guide too high or too low could cause extra friction due to the angle at which the filament enters the guide, so spending a little extra time on placement can help reduce binding or other issues.

Wow excelent work - is it possible to use this as a printer case through ? So I mean i have an wood chassis around my printer and want to have the filament role outside and paththroug an 2cm wood with your system

That sounds like an interesting application, though to use this with such a thickness between the two pieces would require modification. This is designed to be used with a 1.3mm thick wall between the two frame pieces, and while I've found that a difference of approx. +/- 0.25mm may be tolerable with the design as-is, any more is not recommended. Without changing anything, you would run into two problems:

1) The holes for the M3 screws that hold the pieces together would not line up properly, and
2) The included bolt insert would not be long enough.

The first issue may not be a big problem with a wood enclosure, as you could simply secure the outer frame using the M3 screws, and either leave the inner frame to be secured only by the bolt insert, or drill new holes where needed to maintain the alignment for the insert to pass through. Since the wall would be opaque, the misalignment of the two pieces would not be as apparent as it would be on a transparent container like they were designed for.

The second issue would require a new bolt insert to be designed, which would be approx 20mm * sqrt(2) (28.284mm) longer than the included one for a 2cm thick wall.