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marking knife with hardened square.

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Forum topic by JohnChung posted 39 days ago 439 views 0 times favorited 6 replies Add to Favorites Watch
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JohnChung

221 posts in 672 days


39 days ago

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

1173 posts in 559 days


#1 posted 37 days ago

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

2716 posts in 1841 days


#2 posted 34 days ago

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

221 posts in 672 days


#3 posted 34 days ago

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.

View MrRon's profile

MrRon

2716 posts in 1841 days


#4 posted 33 days ago

I use a utility knife for scribing wood.

View TheFridge's profile

TheFridge

514 posts in 84 days


#5 posted 33 days ago

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.

-- "We build our workshops. Then we enjoy the fruits of our labor by laboring for more fruits." - Me

View Richard Hillius's profile

Richard Hillius

96 posts in 278 days


#6 posted 33 days ago

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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