Filament Extrusion Measurement Rig
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That's clever!
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Thanks a lot! This is now sliced, uploaded and will be printed in about one hour (after the current print is done).
I only scaled it to 125% in X so that the inside length now is 125mm. This matches more my regular pattern of extrudern 100mm when calibrating steps/mm.
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Have a check of this one Extruder cal jig
And an instruction Video on how it is used Esteps Calibration Video
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@dougal1957 That is really NICE!
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@brunofporto I have not yet actually used it to calibrate the extruder but I inserted filament into it. The filament lays very nice and flat into the groove so measuring and marking should work really well. But it has an enormous friction. So much that I am not sure my (ungeared) extruder will be able to pull it through.
You mention that you had a version with PTFE tube that you did not like. Was the tube all the way running along the part or just at the ends? Because the latter would be my first idea so solve this issue.
Manuel
Duet 3 6HC (v0.6) with RPi 4B on a custom Cartesian
with probably always latest firmware/DWC (incl. betas or self-compiled)
My Tool Collection -
@wilriker Thanks for the feedback!
The first version was with the PTFE running along and cut to expose the filament. But cutting it was not easy.
I think that your idea, using PTFE on both ends will be a good approach: better alignment and a wider path to avoid any excessive friction. I'll add this modification ASAP
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Done! The new version has holes at both ends for the PTFE tube and a better clearance for the filament. Also, come at two lengths with 100mm and 125mm gaps.
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@brunofporto Cool! It's sliced and ready to print. Not sure though if it will make it on the plate today.
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A tight fit for the PTFE and you need to carefully insert the filament to the exit but it is ok to use
Thanks for all the feedback!
