Extruder Test Jig: Difference between revisions
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[https://docs.google.com/presentation/d/12-Y3UuiYQpRDkytYR-IxuhfRCAIUx2ZXr8QPuATw79A/edit#slide=id.g5c3be0ce2d_1_28 edit] | [https://docs.google.com/presentation/d/12-Y3UuiYQpRDkytYR-IxuhfRCAIUx2ZXr8QPuATw79A/edit#slide=id.g5c3be0ce2d_1_28 edit] | ||
=Results= | |||
Minimum acceptable pull force is 5 lb. Tighten extruder spring if this is not the case. Make sure 33 mm long spring is used. Motor skipping indicates limit. If motor skips before 5 lb, verify that motor current is sufficient. Sometimes filament slipping is a limit, in which case the extruder spring force must be improved. Slight optimization needed there to add 1-2 mm of spring tension by making extruder spring mounting holes more shallow, or design them differently so spring is easier to remove. | |||
*May 22, 2020 - 5.5 lb pull force. Notice small 3 mm spacer inside the extruder spring hole. | |||
=Internal Links= | |||
*[[Open Source Universal Material Science Destructive Testing Machine]] - a similar device | |||
=External Links= | |||
*Any tests out there of other extruders? | |||
Latest revision as of 17:38, 22 May 2020
Problem Statement
How do you measure the pull force of the extruder?
Results
Minimum acceptable pull force is 5 lb. Tighten extruder spring if this is not the case. Make sure 33 mm long spring is used. Motor skipping indicates limit. If motor skips before 5 lb, verify that motor current is sufficient. Sometimes filament slipping is a limit, in which case the extruder spring force must be improved. Slight optimization needed there to add 1-2 mm of spring tension by making extruder spring mounting holes more shallow, or design them differently so spring is easier to remove.
- May 22, 2020 - 5.5 lb pull force. Notice small 3 mm spacer inside the extruder spring hole.
Internal Links
- Open Source Universal Material Science Destructive Testing Machine - a similar device
External Links
- Any tests out there of other extruders?