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TS set up accuracy?

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Forum topic by firstbase posted 360 days ago 466 views 1 time favorited 9 replies Add to Favorites Watch
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firstbase

35 posts in 556 days


360 days ago

OK, setting up the Grizzly 0690 TS which arrived yesterday. Very exciing yes indeed! Can some one give me some parameters on accuracy for the wings and blade? Wings are on and I am leveling and adjusting front to back. Measuring the wing and the table I am showing that one wing is within .002 of the table when I measure front and back. The other wing is off .002 in the front and .005 in the back. I can’t seem to get it better than that. Not sure how to beside loosen up, rubber mallet is up or down, tighten, etc. Any hints on doing it a less newbie way? What should I be looking for on these measurements? Perfect would be great of course but….

Any comments appreciated!


9 replies so far

View knotscott's profile

knotscott

5414 posts in 2000 days


#1 posted 360 days ago

The method you described is pretty much what I do. So long as things don’t catch on the seam, it’s usually ok. The blade to fence alignment is the one to get fussy with…..that, and blade selection. Save the stock blade for cutting the neighbor’s stuff! ;-)

....need pics!!!!

-- Happiness is like wetting your pants...everyone can see it, but only you can feel the warmth....

View Bill White's profile

Bill White

3401 posts in 2584 days


#2 posted 360 days ago

I think you’d better stop before ya go nuts. Those dimensions are good to go.
As knotscott said, get the blade-to-miter slots set correctly and start that new puppy up.
Bill

-- bill@magraphics.us

View firstbase's profile

firstbase

35 posts in 556 days


#3 posted 360 days ago

That my concern, wood catching on the seam. When I run a 2×4 over the seam it does catch. When I started I leveled the wings to the table and found that this same wing was a little high on the outboard end so I put a piece of blue painters tape along the top edge to force the outboard end down. That worked ok. When I had trouble making the seam even front to back I took the tape off thinking that maybe it was causing the issue somehow but no go. And.. now I can only get it to .002 on one side and .020 on the other, 4 times as bad. Should have stopped when I was ahead. I don’t need it perfect but I do need it to not catch the end of the wood as it slides over the seam. I have a feeling that this is one of those mess with it back and forth until its as close as it gets and then tighten it quick. That could take 5 minutes or…...who knows. What about a spacer under the corner of the table to raise it up to meet the wing? This sounds like good idea but it may be robbing Peter to pay Paul so to speak…

View knotscott's profile

knotscott

5414 posts in 2000 days


#4 posted 360 days ago

Get the middle flush and tighten there, then move to the edges….you can gently persuade with a rubber mallet or use C-clamps.

-- Happiness is like wetting your pants...everyone can see it, but only you can feel the warmth....

View firstbase's profile

firstbase

35 posts in 556 days


#5 posted 360 days ago

I got it back down to about .005 so thats as good as its going to get so I tightened and moved on to the rails. I promise to everyone on this board that when my woodworking skills get to the point where my accuracy is off due to that edge being up by .005 I will tear the whole thing down and get it perfect. Promise! Two quotes from my wifeduring this process that I will share….”Honey, can’t you just sand it down?” and “When you are building try not to use that side of the table thingy.”

Um, ok to both of those suggestions….

View R_Stad's profile

R_Stad

152 posts in 467 days


#6 posted 359 days ago

Just a slight variation on Knotscott’s fine advice.
What you might try is loosen your bolts just enough to be able to slide the wings slightly up or down. Start at the front edge. Get it where you like it and tighten that bolt. Move to the next bolt, and do the same. Now go to the last and bring it up or down using a clamp and a block of wood over your table and wing and tighten. I was able to go from a .008 dip in the middle to pretty darn flat (maybe .001) that way. Good luck with your new saw.

-- Rod - Oregon

View Dallas's profile

Dallas

2861 posts in 1111 days


#7 posted 359 days ago

My preferred method is to clamp a couple of pieces of angle iron to the front and rear of the bottom of the table so they stick out where the edge of the wing meets the edge of the table.
Attach the wing loosely and pull it down firmly with a caul on the top and a couple more clamps.
Tighten the bolts, and it should be perfectly level.

-- Improvise.... Adapt...... Overcome!

View rance's profile

rance

4128 posts in 1784 days


#8 posted 359 days ago

To level the wings, I would suggest you go back and loosen all the bolts to one wing. Then snug the two end ones up so it holds it, but you can whack it up & down. You DON’T want to use a rubber mallet or dead-blow hammer. You can get MUCH finer control using a solid hammer. Either use a solid brass hammer or a carpenter’s hammer & a block of end-grain wood(grain running up and down, not side to side). Or you can use a large solid wood end-grain mallet. Tap it into place +- 0.001, then tighten down the bolts. IMO, anything more than +- a thou. is unacceptable.

When you align the blade, align it EXACTLY parallel to the slot, then align the fence EXACTLY to the slot. The SLOT is your common point of reference. Never align the fence to the blade or visa versa. Folks may tell you about toe in or tow out, don’t listen to them. Your saw needs to cut the SAME from either side of the blade.

-- Backer boards, stop blocks, build oversized, and never buy a hand plane--

View firstbase's profile

firstbase

35 posts in 556 days


#9 posted 359 days ago

Thanks guys, felt a little guilty and new that my chance to get it “perfect” was now so I took the rails off and began again. Knotscott’s tip o start in the middle and work out did the trick. Down to .001 on all corners. Good to go! that was the one thing I didn’t try so I couldn’t finish the assembly without giving it a go and…voila! Spent the rest of the day running my 220v. I know just enough to get killed but it went ok and I am up and running. On to blade parellel, etc. Thanks for the help!

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