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Question about Crosscut sled

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Forum topic by mikecorwin posted 816 days ago 696 views 0 times favorited 5 replies Add to Favorites Watch
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mikecorwin

13 posts in 1183 days


816 days ago

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

PurpLev

8476 posts in 2280 days


#1 posted 816 days ago

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

1850 posts in 2192 days


#2 posted 816 days ago

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

-- Joe

View Loren's profile

Loren

7424 posts in 2279 days


#3 posted 816 days ago

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

View altendky's profile

altendky

25 posts in 842 days


#4 posted 816 days ago

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

ITnerd

261 posts in 1231 days


#5 posted 816 days ago

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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