2016-10-10 (M) Power Drill to Belt Sander Conversion

A second drive plate was printed with 50% infill. The first was printed at 10% infill so it was very lightweight and even crackled a bit when nuts were tightened onto it. The hardware was installed and took very little time since the big adjustments had already been made.

Both drive plates with hardware attached

Before the drive plates could be connected I accidentally kicked the drive shaft and broke off the support beams. This was the lightweight plate with 10% infill. By coincididence the 50% infill plate was kicked in the same way an hour later, also by accident, and didn't break. In the picture it's easy to see the hollow insides and understand how 10% infill works.

Hardware still inserted into the broken plate

Another copy of the broken plate will be printed but with 50% infill instead. Until then, the hardware parts were installed on the functional plate.

Functional plate and broken plate

Friction between the drive pulley and the belt seemed low when the device was partially assmbled. While writing yesterday's journal the idea of using rubber bands between the pulley and belt occurred to me. Three small diamter, wide web, rubber bands were found in a variety pack. Perhaps these were meant for bundling produce.

Small diameter, wide web, rubber bands

The bands were easy enough to stretch over the pulley. All three were used and spaced evenly. The spacing and alignment shouldn't be too important. The V-shaped edges of the pulley should keep the belt in line and any friction between the pulley and belt should help. It is possible that the belt will wear away the rubber bands too quickly and they will be an unsustainable consumable.

Rubber bands on the drive pulley


The rest of the posts for this project have been arranged by date.

First time here?

Completed projects from year 1.

Completed projects from year 2.

Completed projects from year 3.

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2016-10-04 (Tu)