Question about Crosscut sled

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Forum topic by mikecorwin posted 06-02-2012 02:10 AM 1073 views 0 times favorited 5 replies Add to Favorites Watch
View mikecorwin's profile


17 posts in 2787 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

View PurpLev's profile


8548 posts in 3884 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.

View ajosephg's profile


1880 posts in 3797 days

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

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

-- Joe

View Loren's profile


10477 posts in 3883 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.

View altendky's profile


169 posts in 2446 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.

View ITnerd's profile


263 posts in 2835 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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