This must make the angle better for the approach in to the feeder.
I have never been keen on that. Although I doubt there is much strain on the socket it does not look like a good idea.
To resolve that I have made a simple guide that fits under the lower lip of the Ultimaker case and serves the same function as the socket does to direct the filament.
It's taken a few experiments. I think I'm on mark 5 already.
To get that shape without a support structure it will be produced in two parts and joined with a dovetail.
I'm pleased with how well it positions the filament.
Unfortunately I'm fairly sure that the extra friction of using two guides causes under-extrusion when the reels of filament are part used. I'm back to cut lengths of filament for reliability.
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I have found that by running the filament past only the new guide works well. I have not tried any big models but my smaller tests have shown no sign of under-extrusion.
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| Test Tower |
Based on that and the numerous guides and axles using bearings that others have designed, I am working on my own version with a pulley and skate bearings.
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Download:
The 3D print test tower I've used above (stl)
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