If your hobby is amateur radio or electronics you will often need coils in a variety of size, type, specification, etc.. Coils are no longer as easy to find as they were 20 years ago so you will have to wind your own.  With the help of this simple yet detailed manual you’ll quickly build a machine that can wind universal and honey comb coils, single layer and multi layer solenoids, close wound and space-wound coils, and pi-spaced coils such as those used for r-f chokes and transformers. And the mechanical counter gives you total control of accuracy.

Build a Universal Coil Winding Machine

David Gingery

David J. Gingery Publishing

If you have a particular interest in magnets, you can build this simple device to create new magnets and recharge weak ones. Although specifically designed to recharge magnets used in engine magnetos, this device can be used for producing or restoring magnets in a great variety of shapes and sizes so long as they are made of alloy steels. This is a relatively simple device. Only ordinary mechanical skills are required to build it. The metal core however is of very heavy steel and some machining operations may be required.

How to Build a Magneto Magnetizer

David J. Gingery Publishing, LLC

Li'l Bertha is Dave Gingery's eighth book and was originally published in 1984 by Lindsay Publications. This second edition has been published by David J. Gingery Publishing, LLC. The book Li'l Bertha describes the construction of an electric furnace that can be used as an alternative to a charcoal or gas fired foundry furnace. Although designed with the foundry in mind, the general design details can be adapted to a wide range of furnace needs from creating ceramics to heat-treating to calcining of investment molds and more.

Li'l Bertha A Compact Electric Resistance Shop Furnace

See the best price to sell, buy, or rent books by David Gingery. BookScouter helps to compare book prices from 25+ online bookstores and 30+ buyback vendors with a single search.

Books by David Gingery

See the best price to sell, buy, or rent books by David Gingery. BookScouter helps to compare book prices from 25+ online bookstores and 30+ buyback vendors with a single search.

Build a Universal Coil Winding Machine

How to Build a Magneto Magnetizer

Li'l Bertha A Compact Electric Resistance Shop Furnace