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
- 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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