Hand Tools

Subject:
File composition

Patrick Chase
It would not surprise me at all if modern "good" files were face-hardened.

Embrittlement/fragility is a real problem for tools that hard, and a soft "core" would actually be quite advantageous in several respects.

If you do go the filing route, I suggest looking into Vallorbe Valtitan and Corradi Corrinox files. They're both Rc72 and can cut tools into the low Rc60s. I once used a Corrinox to reshape the side bevels of an ~Rc60 bench chisel and it worked perfectlu (I mostly did it for kicks, but also to achieve a thinner side edge than I felt comfortable doing on my belt).

The Corrinox ones in particular can be had decently priced on Corradi's Italian e-commerce site, provided you buy enough to amortize the shipping.

© 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