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Thread: Calibrating a tri-sqaure
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24th April 2012, 07:35 PM #1
Calibrating a tri-sqaure
A while ago I bought a small 4" tri-square similar to the pic attached. It's quite handy, but unfortunately not very accurate so I tend not to use it as much as I'd like.
Is it possible to tune these things up (inside and out)? I've had a hunt around but can't find much other than calibrating combination or builders squares.
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24th April 2012 07:35 PM # ADSGoogle Adsense Advertisement
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24th April 2012, 08:48 PM #2
Take a piece of timber or metal with a STRAIGHT EDGE , place the square on the edge and draw a line , turn the square over , and line up the square with the line on the edge and draw another line .
This should show any error , measure this variation , divide in half, this figure is the adjustment that will need to be made.
This can be done for the inside as well.
As the square is metal the adjustment can done with a fine file .
Jeff
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25th April 2012, 12:34 AM #3Skwair2rownd
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Might be better to buy a new square! Bugger of a job to true it up if your hand tool skils are not up to scratch.
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25th April 2012, 01:44 AM #4
I suppose if I try but stuff it up it's no real loss as I'd have to get another one anyway.
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25th April 2012, 06:00 AM #5well aged but not old
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25th April 2012, 12:43 PM #6Jim
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Tapping the end of the blade (gently at first) on the bench or other solid wooden surface will sometimes bring them back to true.
Cheers,
Jim
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25th April 2012, 01:44 PM #7
If you decided to buy another try:
COLEN CLENTON - Squares
or
https://www.vespertools.com.au/index...d=17&Itemid=17
Both are great tools
but they come at a price. lol
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25th April 2012, 02:26 PM #8
Oh yeh...I'd *love* some of Chris' tools (Vesper) but I'm just too clumsy to be allowed access to such fine objects.
I am the personification of "this is why we can't have nice things"
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26th April 2012, 11:48 AM #9GOLD MEMBER
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Heat the stock of the square and then tap the blade over.
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26th April 2012, 06:31 PM #10
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26th April 2012, 06:39 PM #11
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26th April 2012, 07:10 PM #12
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26th April 2012, 07:12 PM #13
Very tempting FF. I'll see how I go tweaking what I have and put myself in the group buy if things go awry. Thanks.
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29th April 2012, 03:09 PM #14SENIOR MEMBER
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Its not often that you see a hammer as part of a calibration process
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29th April 2012, 10:27 PM #15
If the Square in question is STEEL< and the blade is welded/brazed in place, then a good quality metal file I would recommend a 2nd cut / double cut , or mill file ,.
Then carefully fie the blade until the square is square.
Jeff
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