Hand Tools

Subject:
Set-back distance and measurebation

Patrick Chase
I want to be very clear that I spent more than a year using cap irons day in and day out without measuring setback, even though I had the ability to do so all along.

Basically I didn't want to worry about the numbers until I'd found a setup that worked. Even then I only did measurements to answer the specific question of whether it made sense to have the cap iron edge below the sole (i.e. setback less than cut_depth*sqrt(2) assuming common pitch).

Having now done the measurements, I agree with David: Blackburn's recommended configuration of cut_depth == set_back isn't particularly workable. Every time I've tried that configuration I've seen degraded (fuzzy) surface quality and greatly increased planing forces. I'm therefore not surprised that Warren observed "crushing" and low surface quality at the 2011 talk.

Let's give Blackburn credit though: He was a lot "more right" than most people at the time. He was off by about 50% in terms of ideal setback for difficult wood, while most were off by an order of magnitude at the time.

Messages In This Thread

Cap iron setback and shaving thickness
Re: Cap iron setback and shaving thickness
Re: Cap iron setback and shaving thickness
Re: Cap iron setback and shaving thickness
Re: Cap iron setback and shaving thickness
Re: Cap iron setback and shaving thickness
Redoing the test
Re: Redoing the test
Re: Cap iron setback and shaving thickness
Re: Cap iron setback and shaving thickness
Re: Cap iron setback and shaving thickness
If you're a beginner...
Re: Cap iron setback and shaving thickness
Re: And a quote....
Re: Radius of cambered blade - some #'s *LINK*
Re: Radius of cambered blade - some #'s
Re: Cap iron setback and shaving thickness
Re: Cap iron setback and shaving thickness
Re: Cap iron setback and shaving thickness
Re: Cap iron setback and shaving thickness
Re: The other issue...
Re: The other issue...
Re: The other issue...
Re: Cap iron setback and shaving thickness
Re: Cap iron setback and shaving thickness
Re: Cap iron setback and shaving thickness
Re: Cap iron setback and shaving thickness
Re: Cap iron setback and shaving thickness
Contrariness
Re: Contrariness
Kato and Kawai
Re: Kato and Kawai
Remarkable restraint
Re: Remarkable restraint
Re: Remarkable restraint
Re: Remarkable restraint
Re: Cap iron setback and shaving thickness
Re: Cap iron setback and shaving thickness
Not really lighting it up
Correction
Re: Correction
Re: Correction *LINK*
Re: Correction
Re: Correction
Re: Correction
Re: Correction
Re: Correction
Re: Correction
This seems pointless
Re: This seems pointless
Maguire
Re: McGuire
The Virtue
Re: Maguire
Re: Maguire
Re: Maguire
Re: Maguire
Re: This seems pointless
Re: This seems pointless
"Planecraft"
Re: "Planecraft"
Re: "Planecraft"
Re: "Planecraft"
Re: "Planecraft"
Re: "Planecraft"
Re: "Planecraft"
Re: "Planecraft"
Re: "Planecraft"
Re: "Planecraft"
Re: "Planecraft"
Re: "Planecraft"
Re: "Planecraft"
Re: "Planecraft"
My apologies
Re: Burr and Hardness
Re: Burr and Hardness
Re: Burr and Hardness
Re: "Planecraft"
Re: "Planecraft"
Re: "Planecraft"
The big difference
Re: "Planecraft"
Re: "Planecraft"
Re: "Planecraft"
Re: "Planecraft"
Re: This seems pointless
Re: Correction
Re: Correction
Re: Correction
Re: Correction
Re: Correction *LINK*
Re: The most likely
Re: The most likely
Jupiter Cakes
Re: Jupiter Cakes
Re: The most likely
Re: The most likely
Re: The most likely
Re: Correction
Re: Correction
Re: Correction
Re: Correction
Re: Correction *LINK*
Re: YMMV
Re: YMMV
Re: YMMV
Re: Correction
No tear stained defense needed..
Re: No tear stained defense needed..
Re: No tear stained defense needed..
Re: No tear stained defense needed..
Re: No tear stained defense needed..
Re: No tear stained defense needed..
Re: No tear stained defense needed..
Re: No tear stained defense needed..
Re: No tear stained defense needed..
Re: No tear stained defense needed..
Re: No tear stained defense needed..
Re: No tear stained defense needed..
Re: No tear stained defense needed..
Re: No tear stained defense needed..
Set-back distance and measurebation
Re: Set-back distance and measurebation
swingley thread
Blackburn
Re: Blackburn
Andrew Hunter
Japanese planes
Re: Japanese planes
Re: Japanese planes
Re: Japanese planes
Re: Blackburn
Re: No tear stained defense needed..
Cap iron sharpening
Re: Cap iron sharpening
Re: Cap iron sharpening
Re: Cap iron sharpening
Re: Worn Through
Re: Worn Through
Re:cap iron sharpness and maintenance
Re:cap iron sharpness and maintenance
Re:cap iron sharpness and maintenance
Pictures *PIC*
Cap iron sharpness
Re: Cap iron sharpness
Re: Pictures
Re: Pictures
Re: Pictures
Re: Cap iron sharpening *LINK*
Re: Cap iron sharpening
Cut depth, species, and wear
Re: No tear stained defense needed..
Re: No tear stained defense needed..
Re: No tear stained defense needed..
Re: No tear stained defense needed..
Re: No tear stained defense needed..
Re: No tear stained defense needed..
Re: No tear stained defense needed..
Simple concept, easy 'splanation
Re: Cap iron setback and shaving thickness
Re: Cap iron setback and shaving thickness
Re: Cap iron setback and shaving thickness
Re: Cap iron setback and shaving thickness
Re: Cap iron setback and shaving thickness
Tried this again today
Re: Tried this again today
Re: Tried this again today
Double Iron vs. Thick Iron
Re: Double Iron vs. Thick Iron
Re: Double Iron vs. Thick Iron
Double Iron vs. Thick Iron
Re: Double Iron vs. Thick Iron
Re: Double Iron vs. Thick Iron
Re: Double Iron vs. Thick Iron
Re: Double Iron vs. Thick Iron
Re: Double Iron vs. Thick Iron
Re: Double Iron vs. Thick Iron
Re: Double Iron vs. Thick Iron
Re: Cap iron setback and shaving thickness
Re: Cap iron setback and shaving thickness
Re: Cap iron setback and shaving thickness
Re: Cap iron setback and shaving thickness
Re: Cap iron setback and shaving thickness
Re: Cap iron setback and shaving thickness
planing
Re: planing
Re: planing
Re: planing
Re: planing
Consumables vs skilled labor
Actually, you've fed right into..
Re: Consumables vs skilled labor
Re: Consumables vs skilled labor
Re: Good Work
Re: planing
Re: Cap iron setback and shaving thickness
I knew *PIC*
Re: I recall
By the way, Mark..
Re: By the way, Mark..
Re: By the way, Mark..
© 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