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Extending table saw miter slots into outfeed table

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Forum topic by William Shelley posted 06-02-2016 07:16 PM 539 views 0 times favorited 7 replies Add to Favorites Watch
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William Shelley

150 posts in 934 days


06-02-2016 07:16 PM

A while back I added an outfeed table to my Ridgid R4512 table saw, but neglected to route miter slots into it. I’m regretting that now, as every time I need to use my crosscut sled, I have to drop the outfeed table out of the way.

When I route in miter slots into the outfeed table, is it important that they stay perfectly aligned with the existing slots in the cast iron TS top?

-- Woodworking from an engineer's perspective


7 replies so far

View TJones's profile

TJones

4 posts in 347 days


#1 posted 06-02-2016 07:33 PM

I would say as close as possible otherwise your sled will bind and/or get very difficult to push through the cut. A little slop might be allowable as long as your runners remain in the table saw slots all the way through your cut, since they are really what is aligning your sled. If I am incorrect I’m sure others will help us.

Tony J.

View bbasiaga's profile

bbasiaga

757 posts in 1460 days


#2 posted 06-02-2016 08:04 PM

Lots of them I’ve seen have wider slots in the out feed table. No binding, but your sled has to register well in the table saw slots all the way through the cut.

-- Part of engineering is to know when to put your calculator down and pick up your tools.

View clin's profile

clin

514 posts in 461 days


#3 posted 06-02-2016 08:07 PM

I cut my slots much wider than the slots in the table saw. They only need to provide clearance, not guidance. With a crosscut sled, there’s no reason I know of that you need to push the sled past the rear fence, where the cut will finish.

So if I were cutting a maximum thickness stock, and therefore had to make the cut all the way to the center of the saw blade (where it is tallest), my table saw still has 13” to the back of the table.

Sure if you have a big sled (I do), longer miter slots would provide more support. But 13” of miter slot is quite a bit to keep things steady if your guides are properly sized.

Also, assuming your outfeed table top is wood (who’s isn’t?), then you can’t expect these to have and hold the precision of the slots in the table saw. So I suspect you’d gain little if anything anyway trying to make them tight.

-- Clin

View CharleyL's profile

CharleyL

197 posts in 2829 days


#4 posted 06-02-2016 09:26 PM

I agree with Clin.

My out feed saw table also has wide miter slots. Once the miter guide or jig is past the saw blade it doesn’t need tight fitting miter slots.

Charley

View JBrow's profile

JBrow

818 posts in 384 days


#5 posted 06-03-2016 01:23 AM

William Shelley,

I have mitre clearance slots in my outfeed table that are a little wider and a little deeper than the table saw’s mitre slots. I also use a panel cutting sled to square up wide panels. The back of the sled is open and the mitre slot runner is wood. The problem of no support of the sled’s wood runner by the outfeed table mitre clearance slot was solved by extending the runner beyond the sled to the rear. That way, even if a panel is wider than the sled can accommodate, the sled continues to run true even if the back edge of the panel extends beyond the rear of the sled. The sled’s runner remains in the table saw’s mitre slot at the rear of the sled.

View CyberDyneSystems's profile

CyberDyneSystems

220 posts in 1653 days


#6 posted 06-07-2016 02:57 AM

I’ve always made them significantly over sized. (width and depth)

I want a place for the miter bar to instead of hitting the outfeed table, but I don’t expect the outfeed table slots to be precise enough to control the miter gauge.

-- Without the wood, it's just working

View Fred Hargis's profile

Fred Hargis

3942 posts in 1958 days


#7 posted 06-07-2016 11:35 AM



I ve always made them significantly over sized. (width and depth)

I want a place for the miter bar to instead of hitting the outfeed table, but I don t expect the outfeed table slots to be precise enough to control the miter gauge.

- CyberDyneSystems

Same here!

-- Our village hasn't lost it's idiot, he was elected to congress.

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