Hand Tools Archive

Subject:
Trigonometry
Response To:
Re: Update ()

Warren in Lancaster, PA
Your mathematics is a little mixed up, Tom. The curvature on an iron becomes less extreme as the pitch is increased. The figures should be:

45 degrees 1.41:1
50 degrees 1.31:1
55 degrees 1.22:1

© 1998 - 2017 by Ellis Walentine. All rights reserved.
No parts of this web site may be reproduced in any form or by
any means without the written permission of the publisher.

WOODCENTRAL, P.O. BOX 493, SPRINGTOWN, PA 18081