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marking knife with hardened square.

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Forum topic by JohnChung posted 66 days ago 478 views 0 times favorited 6 replies Add to Favorites Watch
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JohnChung

242 posts in 699 days


66 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

1238 posts in 586 days


#1 posted 64 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

2788 posts in 1868 days


#2 posted 61 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

242 posts in 699 days


#3 posted 61 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.

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MrRon

2788 posts in 1868 days


#4 posted 60 days ago

I use a utility knife for scribing wood.

View TheFridge's profile

TheFridge

689 posts in 111 days


#5 posted 60 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

117 posts in 305 days


#6 posted 60 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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