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marking knife with hardened square.

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Forum topic by JohnChung posted 06-16-2014 09:29 AM 591 views 0 times favorited 6 replies Add to Favorites Watch
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JohnChung

273 posts in 798 days


06-16-2014 09:29 AM

I have a square….... It is not hardened and the marking knife can slice of metal from the square itself. It is
not a good sign as it is.

Therefore I was wondering if I bought a starrett square will it stop the marking knife from chewing up
the square?


6 replies so far

View Tim's profile

Tim

1332 posts in 685 days


#1 posted 06-17-2014 06:56 PM

A hardened square would reduce the chewing up, but also mean you’d need to sharpen the marking knife more. Partly it’s just technique of marking smooth and straight.

View MrRon's profile

MrRon

2933 posts in 1967 days


#2 posted 06-20-2014 07:33 PM

The problem, I feel may be in your technique. You are angling the marking knife, causing the sharp edge to cut into the edges of the square. The marking knife should be held 90° to the surface of the work and the flat side should be pressed aqainst the straight edge. What kind of marking knife do you use? RH, LH or other?

BTW, a Starrett square is too good a tool to be used with a marking knife.

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JohnChung

273 posts in 798 days


#3 posted 06-21-2014 11:50 AM

Double bevel.
http://www.leevalley.com/US/wood/page.aspx?p=60044&cat=1,42936,60044

Yes my technique isn’t great but it is getting there. Looks like if I get a starrett I will chew that up
too. Back to improving my technique.

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MrRon

2933 posts in 1967 days


#4 posted 06-21-2014 09:32 PM

I use a utility knife for scribing wood.

View TheFridge's profile

TheFridge

968 posts in 210 days


#5 posted 06-21-2014 09:44 PM

More than likely a starrett square my not be a hard as your knife , but there is no way your knife will shave off a slice. More likely your knife will become a blunt object rather quickly.

-- Shooting down the walls of heartache. Bang bang. I am. The warrior.

View Richard Hillius's profile

Richard Hillius

146 posts in 404 days


#6 posted 06-21-2014 10:20 PM

I think it might be technique as well. Lots of people have used wooden squares though the ages with marking knifes.

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