2016-09-05 (M) Clockwork Theremin

Gear construction was started. Copies of the two smallest gears were printed since they fit on stocked paper sizes. The smallest gear, 100mm diameter, fit on a 8.5" x 11" (A4) paper.  The next size gear fit on 11" x 17" (A3) paper. They were cut out with regular scissors but a cutting mat and scalpel would have been preferable.

Paper gears cut from standard paper sizes

 Super77 spray adhesive was applied to the back of the paper gears. This adhesive works well as a contact adhesive without warping the paper or making it immobile once it's applied.

Paper gears with Super77 waiting to dry

Once the adhesive was dried the gears were applied to a piece of foam plastic. The plastic was cut to the diameter of the larger gear on a table saw beforehand. Placing the small gear so close to the large gear was a mistake since it made them difficult to get apart. It excessive time on a band saw.

Paper gears adhered to plastic sheet

Gears after cutting them out on the band saw. Cutting plastic out from between the teeth was tedious. It may have been wiser to drill a large hole at each junction and cut away the excess but the saw blade was wider than necessary for this job.

Rough cut plastic gears

Parts list:

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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2016-08-31 (W)