Gears and Gravity, Day 4: Arbor Tube Rolling

Each wheel and pinion must be secured to a paper arbor before being attached to the 1/4″ dowel pivot. The arbor is 1/4″ ID and 3/8″ OD. As I was designing the clock, I looked for off-the-shelf tubes that I could purchase but what I found seemed expensive and I wanted to ensure a consistent size so I decided that I’d have to roll my own. This video presented and excellent solution. Still, these are a challenge to roll consistently and I had to experiment for quite a while before I found the best technique to teach my students.

Applying glue thinned with water and a little rubbing alcohol to prevent wrinkling.One person holds the paper on the steel rolling-pin to prevent the two from getting glued together.

Applying glue thinned with water and a little rubbing alcohol to prevent wrinkling.One person holds the paper on the steel rolling pin to prevent the two from getting glued together.

Glue applied, starting the roll. A helper tries to keep wrinkles from forming.

Glue applied, starting the roll. A helper tries to keep wrinkles from forming.

Slow and steady.

Slow and steady.

All most there.

All most there.

A finished arbor tube.

A finished arbor tube.

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