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TS cutting on when i pull back the miter gauge

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Forum topic by stripit posted 02-14-2018 10:30 PM 285 views 0 times favorited 4 replies Add to Favorites Watch
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stripit

22 posts in 1946 days


02-14-2018 10:30 PM

Topic tags/keywords: jig question

Hi. Can anyone tell me why my Ts (delta unisaw) cuts when I pull the sled (incra express) back. This causing a gap in the mite joint at one end. I have checkedd the blade for 90, and the miter for 45 and both are good. What am I missing.

Thank for any heelp Joel


4 replies so far

View fivecodys's profile

fivecodys

909 posts in 1539 days


#1 posted 02-14-2018 11:01 PM

Any slop in the miter slot? Maybe the rail is moving around in the slot when you pull it backwards?

-- The less an idiot knows, the louder he seems to know it!

View eflanders's profile

eflanders

239 posts in 1753 days


#2 posted 02-14-2018 11:02 PM

Sounds to me like an alignment issue. Things to check are: 1). My Inca jig came with plastic washers to maintain a good fit into the miter gauge slot. Is your gauge showing any side to side slop in the miter gauge slot? 2). Have you checked the blade for alignment to the miter gauge slot? A dial caliper is usually used for this but you can get very close with an accurate tape or by simply clamping a board to the miter guage. 3). Is your miter guage square to the table? This is the very first step in setting up your miter gauge. 4). Does your blade have some warp or wobble to it? This is somewhat rare but it does happen. Try another blade and see if it does the same thing. Good luck!

View runswithscissors's profile

runswithscissors

2646 posts in 1928 days


#3 posted 02-15-2018 10:43 PM

I would prefer not to pull the wood back past the blade until the saw has stopped. There must be some slop somewhere allowing movement, as suggested above.

-- I admit to being an adrenaline junky; fortunately, I'm very easily frightened

View Tennessee's profile

Tennessee

2739 posts in 2417 days


#4 posted 02-15-2018 10:57 PM

Mine did that. Same thing. My miter slots were nice and tight, and my segments I was cutting were fine, but that little bit of cut coming back bothered me.
SOLUTION: Turned out that my blade has just a hair of wobble in the blade. Maybe 2-3 thousandths. Not a completely flat blade. It is an Irwin that came out of the package like that. I plan on changing it soon.

-- Tsunami Guitars and Custom Woodworking, Cleveland, TN

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