Hand Tools

Subject:
Re: premium chisel vs narex
Response To:
premium chisel vs narex ()

Patrick Chase
Narex uses a single step hardening/tempering process (austempering in a molten salt bath, with interrupted quench) that produces a relatively small amount of warp. They take advantage of that to reduce their costs, by doing 100% of their machining before heat treatment.

In contrast the premium makers all post-machine after HT. This has two benefits:

1. Better geometry and therefore less setup/tuning for the end user. Narex' HT process produces admirably low distortion, but it's not as good as can be achieved with careful post-machining. That's probably why your premium chisel took so much less effort to set up.

2. HT can leave some (relatively) soft/decarburized steel at the surface, and post-machining gets rid of that. That may explain why the Narex chisels require some break-in. I've seen the same BTW.

Messages In This Thread

premium chisel vs narex
Re: premium chisel vs narex
very detailed info
Re: Lee Valley...
Narex heat-treatment process
Re: Narex heat-treatment process
Re: Narex heat-treatment process
Re: Narex heat-treatment process
Re: Narex heat-treatment process
Re: Narex heat-treatment process
Re: Narex heat-treatment process
Re: Narex heat-treatment process
Re: premium chisel vs narex
Re: premium chisel vs narex
Re: premium chisel vs narex
Re: premium chisel vs narex
Narex heat treatment process
Re: premium chisel vs narex
Re: premium chisel vs narex
Re: premium chisel vs narex
Re: premium chisel vs narex
Re: premium chisel vs narex
Re: premium chisel vs narex
A question of clarification......
Re: A question of clarification......
Questions on sharpening a Koymaichi.....
Re: Questions on sharpening a Koymaichi.....
Re: Questions on sharpening a Koymaichi.....
Re: Questions on sharpening a Koymaichi.....
Re: Questions on sharpening a Koymaichi.....
Re: Questions on sharpening a Koymaichi.....
Tormek blade holding
SE-77
Re: Questions on sharpening a Koymaichi.....
Re: premium chisel vs narex
Re: premium chisel vs narex
Re: premium chisel vs narex
i agree
What we often forget...
Re: premium chisel vs narex
handles
True thing...
Re: handles
Re: Unless....
Re: premium chisel vs narex
Not intentionally (or consistently) hollowed
Re: Not intentionally (or consistently) hollowed
Re: Not intentionally (or consistently) hollowed
Re: Not intentionally (or consistently) hollowed
Re: Not intentionally (or consistently) hollowed
Re: Not intentionally (or consistently) hollowed
Speaking of the shoes of others
Re: Speaking of the shoes of others
Re: Speaking of the shoes of others
Re: Speaking of the shoes of others
"Premium" or "Dovetail" chisels?
Re: "Premium" or "Dovetail" chisels?
Re: premium chisel vs narex
Re: premium chisel vs narex
Re: after looking....
Re: after looking....
Re: after looking....
Re: after looking....
Re: after looking....
Re: after looking....
Narex parers
Re: Narex parers
© 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