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Question about Crosscut sled

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Forum topic by mikecorwin posted 06-02-2012 02:10 AM 704 views 0 times favorited 5 replies Add to Favorites Watch
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mikecorwin

14 posts in 1205 days


06-02-2012 02:10 AM

Hi – I recently got a Sawstop Professional saw and have done all the calibrations and setup. I just completed building a crosscut sled and tested its accuracy with the five cut method, which got me accurate to less than a thousandth of an inch over a 28” span. My question is when I crosscut with my sled, the cut is dead square but doesn’t look like it. It’s weird…I’ve checked the cut with 2 different and new Starrett squares and it’s dead on 90 degrees but when I look at the cut in the light the cut line looks just a bit off to me. Would there be any reason why this could be happening? It seems like I’m losing my mind, yet every time I check it it’s dead on. Any help would be greatly appreciated. Thanks!


5 replies so far

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PurpLev

8476 posts in 2302 days


#1 posted 06-02-2012 02:17 AM

my problem is different – it looks 90 to me but the squares always says its not ;)

as long as the parts are checked to be square, I wouldn’t worry about it – and in your case I’d stop looking at those cuts – will make your life easier.

-- ㊍ When in doubt - There is no doubt - Go the safer route.

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ajosephg

1852 posts in 2214 days


#2 posted 06-02-2012 02:39 AM

Sounds like a visit to an escapologist is in order. ;)

-- Joe

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Loren

7551 posts in 2301 days


#3 posted 06-02-2012 05:11 AM

It’s probably you. Use diagonal measurements if you like. You
may need to re-train your eye to see what’s square… like A
set at 440hz being the way musicians agree it is, what is square
in cabinetmaking is not a matter of opinion.

-- http://lawoodworking.com

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altendky

25 posts in 864 days


#4 posted 06-02-2012 02:22 PM

The wood grain can easily throw off your perceptions. Even when I consciously think about that it can still be difficult for me judge it correctly. Then again, I am pretty new to this. Oddly, searching didn’t quickly provide a good example of this.

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ITnerd

261 posts in 1253 days


#5 posted 06-02-2012 02:37 PM

PurpLev said “my problem is different – it looks 90 to me but the squares always says its not”

So true sir, so true. Thanks for the laugh with my morning coffee.

Mike, good luck with your sawstop and sled; we are checking square before adding Bourbon to the project, correct?

Best of luck, and hope your squares stop messing with you,

-- Chris @ Atlanta - JGM - Occam's razor tells us that when you hear hoofs, think horses not zebras.

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