The Barron Blade

[Harbo]

Postman has not arrived yet so cannot check the sizes but they do look bigger than the size 10's.

My Veritas holder takes the size 10's so probably will not fit that - I fancied putting the "top bevel" on them to make them cut both ways?

I have used old Stanley blades on some of my knives - they are 0.6mm thick.
For my other ones I use 1/16" Guage Plate (1.5mm) and for my Chris Vesper ones 3/32" which are really cutting knives?

Rod

 

[Harbo]

The Postman finally arrived!
The SM01 are twice the size (in every direction) to the 10 type and definitely bevelled on both sides!
They will not fit my Veritas holder or Type 3 handle by a big margin.
The blades are quite rigid though.

I also bought some No. 40 which are bevelled both sides but on the top too - they fit the Type 3 holders and make them useful for marking out for very delicate stuff, as they cut both ways.

01 Blade
40 Blade in No.3 holder
10 Blade with Veritas Holder

Rod

 

[mr grimsdale]

I thought the whole object of a good marking knife was single bevel, which is more accurate as you can hold it vertical which is useful when marking small pins.

I've been using the x-acto chisel 3rd from left here http://ep.yimg.com/ca/I/yhst-5758733395 ... _213525762 but with only one bevel. Thinner than a Stanley knife blade so it'll go into single kerf pin holes. Very easy to use chisel fashion - press in or tap with a small hammer, with the bevel facing out into the hole. Thin stuff 1/4" but will adapt something similar for thicker stuff.

.I found when I used a scalpel that I tended to sometimes cut into the side of the tail,...

Me too hence the chisel action. You can get it to sit nice and tight against the side and just tap it once lightly for a spot on line.

PS Swann Morton do something similar - also 3rd from left http://www.scalpelsandblades.co.uk/blad ... o-9101.php
Other blades from these sets are useful for nicking out the corners.

 

[newt]

I thought the whole object of a good marking knife was single bevel, which is more accurate as you can hold it vertical which is useful when marking small pins.

I've been using the x-acto chisel 3rd from left here http://ep.yimg.com/ca/I/yhst-5758733395 ... _213525762 but with only one bevel. Thinner than a Stanley knife blade so it'll go into single kerf pin holes. Very easy to use chisel fashion - press in or tap with a small hammer, with the bevel facing out into the hole. Thin stuff 1/4" but will adapt something similar for thicker stuff.

.I found when I used a scalpel that I tended to sometimes cut into the side of the tail,...

Me too hence the chisel action. You can get it to sit nice and tight against the side and just tap it once lightly for a spot on line.

PS Swann Morton do something similar - also 3rd from left http://www.scalpelsandblades.co.uk/blad ... o-9101.php
Other blades from these sets are useful for nicking out the corners.

Thanks, for small dovetails the chisel idea seems a goodun

 

[Harbo]

I did a test with the "Barron SM01 blade" using it's dedicated SM holder.

Mounted in the holder, the blade is still fairly flexible, and would only give a consistent line when angled into the edge being "transferred" i.e. the tail say. An added problem being that you could also undercut the "tail" as the blades are very sharp?

When trying to hold the blade vertically against the "tail" as you would with a single bevel, the flexibility came into play and it tended to wander off. It seemed that the cutting edge needed something to run against and support it?

The other think that occurred to my from using scalpel blades is that they do not stay sharp for long and being disposable is an advantage - but not in this design?

The "Ultimate Blade" - sorry I think not, but as a useful craft knife, yes.

Rod

 

[woodbloke]

Rod - thanks for doing that test...I was sorta coming to the same sort of conclusions as you, but without doing the tests. Interesting that the blade is still fairly bendy. I think the knives that you and I make are much better for the intended purpose...marking dovetails - Rob

 

[Mr Ed]

Rod - thanks for doing that test...I was sorta coming to the same sort of conclusions as you, but without doing the tests. Interesting that the blade is still fairly bendy. I think the knives that you and I make are much better for the intended purpose...marking dovetails - Rob

The issue I have found is that when you use the Rob Cosman style of pins that are a saw kerf thick at one end, most marking knives are too thick to fit. Even my Blue Spruce is too fat, so you have to find an alternative, which for some limited occasions this could be.

I use a thin stanley blade in these circumstances, which appears very similar to the Swann Morton one Mr. Barron is advocating.

Ed

 

[woodbloke]

The issue I have found is that when you use the Rob Cosman style of pins that are a saw kerf thick at one end
Ed

As I said elsewhere Ed, I never make those sorts of pins. I make them where the top is about 2mm, which to me anyway, looks far better so the knives that Rod and I make are fine for that sort of application - Rob

 

[Mr Ed]

The issue I have found is that when you use the Rob Cosman style of pins that are a saw kerf thick at one end
Ed

As I said elsewhere Ed, I never make those sorts of pins. I make them where the top is about 2mm, which to me anyway, looks far better so the knives that Rod and I make are fine for that sort of application - Rob

Yes I thought that would be coming as I typed it! Without starting all that again, lets just say that some people, for some applications, sometimes need a more slender knife...

Ed

 

[woodbloke]

The issue I have found is that when you use the Rob Cosman style of pins that are a saw kerf thick at one end
Ed

As I said elsewhere Ed, I never make those sorts of pins. I make them where the top is about 2mm, which to me anyway, looks far better so the knives that Rod and I make are fine for that sort of application - Rob

Yes I thought that would be coming as I typed it! Without starting all that again, lets just say that some people, for some applications, sometimes need a more slender knife...

Ed

Agreed :wink: :lol: - Rob