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What is going on with my table saw guys?

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Forum topic by ohtimberwolf posted 07-07-2012 08:43 PM 1435 views 0 times favorited 12 replies Add to Favorites Watch
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ohtimberwolf

634 posts in 1813 days


07-07-2012 08:43 PM

Topic tags/keywords: blade adjustment miter slot off guage tablesaw

When I run a gauge between the miter slot and my blade I’m off by 12 º from the front to the back of the blade, the front of the blade being the furtherest from the slot and the back of the blade being closer by the 12º. The blade is not a cheap one it cost me $50 at a wood workers show 10 years ago. I also picked up a $100 blade at the time. Extremely smooth cutting and carbide.

I checked my fence and it runs true to the blade. What the heck is going on here, could my slot be that far off?

Delta contractors saw bought in 1988 and a Delta T fence. What do you think???
larry

-- Just a barn cat, now gone to cat heaven.


12 replies so far

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MrUnix

4207 posts in 1660 days


#1 posted 07-07-2012 09:08 PM

Have you ever aligned the thing? Sounds like the table or trunnions are out of alignment and a PO simply adjusted the fence to match the blade with out checking anything else. On some saws you just need to loosen the table and move into alignment.. I believe on the contractors saw you need to loosen the trunnions and adjust that way. I did a quick google search and there seems to be quite a lot written about how to tune up and align those deltas.. either way, it’s out of whack and needs to be adjusted.

Cheers,
Brad

-- Brad in FL - To be old and wise, you must first be young and stupid

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ajosephg

1878 posts in 3022 days


#2 posted 07-07-2012 09:34 PM

Everything on a saw is referenced to the miter slot, so you should align the blade and fence to the slot. The blade should be within 0.005 inch front to back to the slot. The fence should be within 0.002 to the slot from the front of the table to the back of the table. (Some “misguided souls” will argue that the back of the fence should be slightly further from the slot allegedly to prevent boards from getting pinched during ripping operations.

On your contractor saw, the blade is adjusted by slightly loosening the trunnion bolts and adjusting the trunnion. Easier said than done. I have written a paper on how to do this. If you want a copy send me a PM.

-- Joe

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ohtimberwolf

634 posts in 1813 days


#3 posted 07-07-2012 09:53 PM

Thanks guys, I’ll pay attention to what you have said and hope to get a really good adjustment. larry

-- Just a barn cat, now gone to cat heaven.

View Sylvain's profile

Sylvain

639 posts in 1960 days


#4 posted 07-08-2012 02:21 PM

have a look here :
http://woodgears.ca/delta_saw/alignment.html
and here
http://woodgears.ca/saw_arbor/index.html

this might help :
http://lumberjocks.com/projects/66481
and
http://lumberjocks.com/reviews/743

-- Sylvain, Brussels, Belgium, Europe - The more I learn, the more there is to learn

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ohtimberwolf

634 posts in 1813 days


#5 posted 07-08-2012 06:31 PM

Thanks Sylvain, I have it all copied now so as not to lose it. larry

-- Just a barn cat, now gone to cat heaven.

View BobLoblaw's profile

BobLoblaw

13 posts in 2373 days


#6 posted 07-09-2012 07:19 AM

Also check here.

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ohtimberwolf

634 posts in 1813 days


#7 posted 07-09-2012 08:43 PM

Thanks Bob, I have it printed and will try to understand what he meant by lay a board across the ‘rods’. larry.

-- Just a barn cat, now gone to cat heaven.

View teejk's profile

teejk

1215 posts in 2145 days


#8 posted 07-10-2012 12:54 AM

I’ve noticed a little “drift” on my Unifence lately also (ain’t complaining since she came out of the box and has been used hard for 10 years without touching it). Lucky it’s a Unifence and I think the “tweaking” adjustments are infinite.

But I’m building drawers and I wanted to move to the dovetail jig (those things are fussy especially on the half-blinds) so I had to resort to the cut-off sled to get a square end.

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ohtimberwolf

634 posts in 1813 days


#9 posted 07-10-2012 11:01 AM

TEEJK, wouldn’t you use your miter gauge for that instead of the fence?

-- Just a barn cat, now gone to cat heaven.

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teejk

1215 posts in 2145 days


#10 posted 07-11-2012 10:02 PM

ohtimber

To tell the truth, I HATE the miter gauge and rarely use it at all! especially when moving to the dovetailer where square is critical for a nice fit. I never had much luck getting that perfect 90’ cut with the miter gauge.

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ohtimberwolf

634 posts in 1813 days


#11 posted 07-13-2012 11:15 AM

TEEJK Hate is a very strong expression and I think you mean it.

All hail the sled. It seems to be one of the most favored of the DIY tools. I have one for cutting side panels and such. However if your blade is not square to the slot then adjustment must be made…correct? larry

-- Just a barn cat, now gone to cat heaven.

View dusty2's profile

dusty2

321 posts in 2890 days


#12 posted 07-13-2012 11:50 AM

The sled is a great addition to any tablesaw but it too must be well designed and more importantly “well built”.

-- Making Sawdust Safely

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