The
tensioning wheel was removed from the printer. A smaller rubber inline skate
wheel was selected to replace the large plastic wheel. The bearings and spacer
were removed from the plastic wheel. Speed rings, which are small washers
placed on the outside edges of the bearings, were added to reduce friction. A
longer bolt was purchased because it was fully threaded and long enough for
this application.
The old tensioning wheel
The smaller wheel
Bearings and spacer out of the old plastic wheel
All the parts for the new tensioning wheel
Placement of the speed rings
The
nuts were tightened around the wheel. After assembly and good testing the wheel
and bolt were placed into the printer. The bottom nut was adjusted for height
so the wheel pressed on the chain. Rubber bands were added to keep the wheel
tensed against the chain.
Position and height of new tensioning wheel
Rubber bands to provide tension
To
do:
- Program the new specs + air pump
- Physically install Arduino + shield
- Test + Debug
- Revise Documentation
The rest of the posts for this project have been arranged by date.
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