Included in the new STL made from A1 sheet plywood is a pattern for flat Backboards. A small flat Backboard can be cut and reused with a number of small flat hinged gear plates, such as ball bearing gears, or flat 24 tooth helical gears. A small gear with a high pitch is required in order to also fit inside another medium pitch slower gear, such as a 4:1 or a 7:1. To keep the Backboard small and very flat add 2 more cross supports in between the two gear teeth to act as pinions. Or put a pinhole in each plate and use nuts and bolts to hold each gear plate down. The Backboard was used to make clocks in a continuous milling machine.
If a gear wheel that has one set of teeth at one end and another set of teeth at the other end is needed then we can triple up gears to make it. For example instead of cutting two gears from two separate segments then cut a 1/3rd segment and 2 1/3rd segments. Make two smaller gears out of the plate and mesh the small gears with the larger gears. This is the same principle as putting a Match Head Cover on a Match Head. Especially so if drilling holes for the screws at the concave end of the smaller gears.
The two workhorse tools of the clockmaker are a Plane and an Edging or English Plane. When cutting wood to make a flat stool or chair back, the advantage of having a finished flat plane is amazing. The resulting flat stool or chair back with a carved edge will look more expensive and nicer than anything else. Moreover the tight fit of the edge reduces the tendency for baseboards to slide off when people move around.
While the trench and gear pliers are essential the pocket sized tools often called the five finger pliers are vital to the clockmaker as they are go-to most useful tools for plies, cutting plies, and fine-tuning hubs. d2c66b5586