Hand Tools

Subject:
Re: Do you profile your cap irons?

Patrick Chase
Do you do anything special to ensure that the corners of the cap iron mate firmly?

The reason I ask is because the mating surface of the cap iron is typically undercut a bit, so if you just camber the leading edge and don't make any other adjustments, then in theory the corners will lift off by (camber_depth*tan(undercut_angle)).

I say "in theory" because the amount is fairly small. For example with 3 deg of undercut and 1/32" camber you would see ~1.5 mils of "lift" at the extreme corners, which may or may not be worth worrying about in a roughing plane that takes much thicker shavings than that.

Obviously you could fix it by investing some quality time with some marking grease and a slip or by taking the relief angle down as low as you dare, I'm just curious to know if you bothered.

Messages In This Thread

Whelan planemaking book?
Re: Whelan planemaking book?
Can't answer about the Whelan book
Re: Whelan planemaking book?
Re: Whelan planemaking book?
Thanks (NM) *NM*
Re: Whelan planemaking book?
Re: Whelan planemaking book?
Re: Whelan planemaking book?
Re: Whelan planemaking book?
Re: Whelan planemaking book?
Re: Whelan planemaking book?
Re: Whelan planemaking book?
Re: Whelan planemaking book?
Re: Whelan planemaking book? *LINK*
Re: Whelan planemaking book?
Re: Whelan planemaking book?
Re: Whelan planemaking book?
Whelan planemaking book?
Re: Whelan planemaking book?
Re: Whelan planemaking book?
Re: Whelan planemaking book?
Re: Whelan planemaking book?
Re: Whelan planemaking book?
Re: Whelan planemaking book?
Re: Whelan planemaking book?
Re: Whelan planemaking book?
Re: Whelan planemaking book?
Nice Article!
Re: Nice Article!
Re: Whelan planemaking book?
Re: Whelan planemaking book?
Re: Whelan planemaking book?
Re: Whelan planemaking book?
Re: Whelan planemaking book?
Re: Whelan planemaking book?
Dimensioning: Question about roughing planes
Re: Dimensioning: Question about roughing planes
Re: Dimensioning: Question about roughing planes
Re: Dimensioning: Question about roughing planes
Do you profile your cap irons?
Re: Do you profile your cap irons?
Re: Do you profile your cap irons?
Re: Do you profile your cap irons?
Re: Do you profile your cap irons?
Re: Do you profile your cap irons?
Re: Do you profile your cap irons?
Re: Do you profile your cap irons?
Re: Do you profile your cap irons?
Re: Do you profile your cap irons?
Nicholson
Re: Do you profile your cap irons?
Re: Do you profile your cap irons?
Re: Do you profile your cap irons?
Re: Do you profile your cap irons?
Fun with math
Where did the ball go?
Re: Where did the ball go?
Re: Where did the ball go?
Re: Where did the ball go?
Focussing on the key point
Re: Focussing on the key point
Re: Do you profile your cap irons?
Re: Do you profile your cap irons?
(Message Deleted by Poster)
(Message Deleted by Poster)
Re: Do you profile your cap irons?
Re: Do you profile your cap irons?
No worries *NM*
Reference: Peter Nicholson, 'The Mechanic's Compa
Peter Nicholson plate XII, pages 91 to 93 *NM*
Re: Reference: Peter Nicholson, 'The Mechanic's C
Re: Reference: Peter Nicholson, 'The Mechanic's C
Re: Reference: paragraphs 3 and 4 *PIC*
Re: Reference: paragraphs 3 and 4
Re: Reference: paragraphs 3 and 4
Re: Reference: paragraphs 3 and 4
Errors or suboptimal statements in books
Everybody makes mistakes
Re: Everybody makes mistakes
Things that can be out of date, too
Re: Dimensioning: Question about roughing planes
Re: Whelan planemaking book?
Re: What is the title
Re: What is the title
Thanks Patrick *NM*
© 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