Tech Tips

Three-Claw Retriever

Bronze Brushes Revisited

I like Donald Kinnaman's bronze brush idea ("Tech Tips/ aw ยป32), but I've found the brushes more effective when mounted on an arm tliat is free to move. This takes carc of the brush wearing down as well as any uncvcn-ness in the wheel. A torsion or tension spring could be substituted for the weights.

Richard Q nance Almonte, Ontario

Make Your Own Screw-Drive Center

This lathe drive center transmits torque much better than the usual

I was helping my dad make a picture frame and found it difficult to hold

I was helping my dad make a picture frame and found it difficult to hold such small nails while driving them with a hammer. So I tried holding the nails with a three-claw part retriever, like the ones sold at computer supply stores. It was the perfect tool.

Mat lie w McDougal Fin Jlay, OH

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Wood Working for Amateur Craftsman

Wood Working for Amateur Craftsman

THIS book is one of the series of Handbooks on industrial subjects being published by the Popular Mechanics Company. Like Popular Mechanics Magazine, and like the other books in this series, it is written so you can understand it. The purpose of Popular Mechanics Handbooks is to supply a growing demand for high-class, up-to-date and accurate text-books, suitable for home study as well as for class use, on all mechanical subjects. The textand illustrations, in each instance, have been prepared expressly for this series by well known experts, and revised by the editor of Popular Mechanics.

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