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Dip in table saw top

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Forum topic by JimDaddyO posted 12-22-2009 03:54 AM 1513 views 0 times favorited 10 replies Add to Favorites Watch
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JimDaddyO

442 posts in 2542 days


12-22-2009 03:54 AM

Topic tags/keywords: tablesaw question

I have a 1972 Craftsman TS. I got it from my dad. The top has a dip in the middle. Is there a way to get it out without machining it? It is too old to spend money on, and too sentimental to throw out.

Thanks
Jim

-- my blog: http://watertoneworkshop.blogspot.ca/ my You Tube channel: https://www.youtube.com/channel/UCA5AretE3xPoVDV61AxUdUA?view_as=subscriber


10 replies so far

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iamwelty

254 posts in 2579 days


#1 posted 12-22-2009 04:11 AM

how big is the dip? Where is the dip?

-- There is a fine line between eroticism and nausea...

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knotscott

7211 posts in 2839 days


#2 posted 12-22-2009 05:03 AM

Jim – Does the dip effect the cut? It’d take a pretty substantial dip to make a noticeable difference. Unless it’s obvious, I wouldn’t give it a thought. If it is obvious, it might be easier to buy another old saw that’s similar and just swap tops, and sell off the unneeded parts.

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

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JimDaddyO

442 posts in 2542 days


#3 posted 12-22-2009 10:38 AM

It is about 1/8” right in the middle. I should point out that the blade attaches right to the motor, the motor is attached to the top. I think it is the weight of the motor after 30+ years that has caused it to go out.

Thanks
Jim

-- my blog: http://watertoneworkshop.blogspot.ca/ my You Tube channel: https://www.youtube.com/channel/UCA5AretE3xPoVDV61AxUdUA?view_as=subscriber

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lwllms

555 posts in 2745 days


#4 posted 12-22-2009 03:12 PM

Jim,

Every contractors saw that’s based on Delta’s old design I’ve ever checked has the same sag right at the back of the table. I once checked a brand new Rockwell contractors saw on a sales room floor right after the saw was taken from the box and found that sag. I never found a cure for it and couldn’t get Rockwell to do anything about the one I had. A few years later the Biesemeyer fence system was introduced and I thought that might offer a cure because of the heavy steel angle that’s bolted to the back of the table. I never tried to fix the sag with a Biesemeyer fence because I had sold my old contractors saw and replaced it with a cabinet saw. If the angle was attached at the outside of the table before the holes were drilled and tapped for the center sagged area, it’s possible the top could be flexed and held flat for attaching the center. Again I never tried that.

The sag not only impairs accuracy but I strongly suspect can contribute to kick-backs. Long ago I quit saying anything about this when I see one of those saws. People get offended and think I’m dissing their tools. I see fewer and fewer of those saws any more. Partly it’s because I’m not in other shops very much these days and the other part is most of the new designs are different. I was amused to see an up-coming article about us where Chris Schwarz describes my new saw, which I bought new, as a “vintage” saw.

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JimDaddyO

442 posts in 2542 days


#5 posted 12-22-2009 07:31 PM

Thanks, I was thinking of maybe putting an angle iron across it. I also thought of bolting one to the underside with a shim in the center. But that would mean dis assembling the saw, and possible interference issues with moving parts. I also thought of replacing the top with MDF or plywood, reinforced and braced for the motor, but that is going into some engineering and expense on an old saw. Even the inserts for it are non standard…sooo. Still thinking. Maybe just take it apart and have a look for now!

-- my blog: http://watertoneworkshop.blogspot.ca/ my You Tube channel: https://www.youtube.com/channel/UCA5AretE3xPoVDV61AxUdUA?view_as=subscriber

View Blake's profile

Blake

3442 posts in 3337 days


#6 posted 12-22-2009 08:18 PM

It might just be the wings that need to be adjusted.

-- Happy woodworking! http://www.openarmsphotography.com

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JimDaddyO

442 posts in 2542 days


#7 posted 12-23-2009 01:26 AM

No, it is the top itself, the dip is still there with the wings off.

-- my blog: http://watertoneworkshop.blogspot.ca/ my You Tube channel: https://www.youtube.com/channel/UCA5AretE3xPoVDV61AxUdUA?view_as=subscriber

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JimDaddyO

442 posts in 2542 days


#8 posted 12-31-2009 08:08 PM

So, I went to the “shop” today and tore the saw down. I started a blog about it and I am looking forward to comments. Thanks for all the input.

-- my blog: http://watertoneworkshop.blogspot.ca/ my You Tube channel: https://www.youtube.com/channel/UCA5AretE3xPoVDV61AxUdUA?view_as=subscriber

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iamwelty

254 posts in 2579 days


#9 posted 12-31-2009 09:51 PM

Jim DaddyO—- how about some pictures showing the dip with a straight edge showing the problem… would give us an idea of exactly what and where your problem is… just a thought. There are some real geniuses around here… I am not one of them, unfortunately…

-- There is a fine line between eroticism and nausea...

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JimDaddyO

442 posts in 2542 days


#10 posted 12-31-2009 10:03 PM

Yes, I put photos in the blog about it.
It is labeled 1972 Craftsman project

-- my blog: http://watertoneworkshop.blogspot.ca/ my You Tube channel: https://www.youtube.com/channel/UCA5AretE3xPoVDV61AxUdUA?view_as=subscriber

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