Rob Cosman's Sharpening Rule
The most innovative technique in plane sharpening over the last 30 years is the "ruler trick" by my good friend, David Charlesworth.
Traditionally, a sharp cutting edge is achieved by honing the back of your plane blade until it is dead flat (this takes a while), then you hone the primary bevel to achieve a razor sharp edge.
David Charlesworth introduced his ruler trick to save significant time while still achieving a razor sharp edge. Instead of flattening the whole blade back, he places a thin ruler on the stone raising up the blade about 1 degree so he just hones the leading edge, not the whole back. David's "ruler trick" works great and I always use it.
You only need one thing - a small thin ruler. We have our 8 inch long, .018 inch thick sharpening rules custom made without ruler etchings to allow plane blades to glide smoothly across the rule when executing the "ruler trick".
This is the second rule that I got from you since I lost the first one so I bought a second one, Of course as soon as soon as the second one arrived I found the first one :-) I love your products and your show. I'm a Navy Vet and can't tell you how much I appreciate your work wth disabled Vets. Keep up the good work.
Old dog, never too late to learn
Rob suggestions on what products that are available to get the sharpening tasks accomplished are spot on, by taking the advice from his sharpening video, has opened this seventy five year old eyes. Good work Rob. Denny O’Neil, Cape Cod
On the one bench plane I have, the blade from the manufacturer was not square, so that has taken a lot of work. I haven't given up on it yet, but it is a blade issue, not the rule or the sharpening stones. I have enjoyed working with all of my RC products. They perform as advertised. Thank you.
Moxon vice hardware, sharpening bits
Outstanding. Exactly as advertised. Great service with a real personal touch
My experience using the sharpening rule was great! It’s the only way to go for fast plane blade sharpening!