Help ! I can't seem to find the right table saw router extension for my Ridgid R4512

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Forum topic by David Grimes posted 04-04-2011 06:14 AM 4171 views 0 times favorited 7 replies Add to Favorites Watch
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David Grimes

2078 posts in 2662 days

04-04-2011 06:14 AM

Dear Fellow Lumberjocks,

I have been looking, believe me. To start from the beginning, I have the saw already together and working great. I ordered a 3 1/4 HP Triton the other day based on some tips from Lumberjocks (including where some great sale prices were), so that will be the router I will be using on the extension wing.

I want the extension on the right side. I have 27” between the rails of the table saw (front to back) which I understand is something of an industry standard. I have 17” from my right side extension wing already on the saw to the end of the rails. I do not want to replace my existing extension. I want to add to it. It is okay with me if I exceed the 17” a bit.

I do not want a laminate extension wing, even though they are less expensive and some are longer than 17”. I want a cast iron wing that will fit my saw.

Has anyone put a cast iron wing on one of these saws? If so, please tell me what, where, how, etc.
I do not want a support leg unless absolutely required. I believe I would rather whittle the extension out of black locust than have a support leg there.

I want a router plate for the extension that will fit the Triton. I believe i want an aluminum or phenolic. I know I do not want laminate with particle board or mdf beneath it.

I called one of the places that make these and they did not know if theirs would fit or not. And when I questioned further, I was invited to build one from scratch with one of their builders kits !

I also want a decent fence (split) and tall for vertical passes with at least one row of t—slots on the face and up top… and dust collection provisions. Again, I do not want the stinking laminate on the fence, either.

Am I expecting too much from off-the-shelf or out-of-the-box ?

If I have to make one, has anyone made one out of Corean solid surface ? Any reason not to use Corean ?
Is phenolic over plywood good stuff ? Why is the phenolic only sold in sheets of like 24×36 ? Where can I get a 48×48 piece ?

Please forgive me if I have exceeded the unwritten maximum number-of-questions-per-thread-starter rule, but I do need your help. You guys have guided me through several of these swamps already and I have yet to lose a limb to or even see any gators.


David Grimes

-- If you're going to stir the pot, think BIG spoon or SMALL boat paddle. David Grimes, Georgia

7 replies so far

View Dogboy's profile


94 posts in 2635 days

#1 posted 04-04-2011 07:40 AM

View crank49's profile


4032 posts in 2993 days

#2 posted 04-04-2011 08:32 AM

I have the Craftsman 21833, which is essentially the same saw as the Ridgid R4512. I can’t imagine having a cast iron table top and the weight of a router hanging out there without a support leg. I just don’t see enough beef in the rails to support this. I suppose you could add another continuous rail under the split ones that are there and perhaps use a knee brace tied to the cabinet and carry the load, but I’d then be afraid the whole affair would be top heavy and in danger of tipping over in use.

The Rockler link above looks like a good option at 27” X 16” X 1 1/2” and 55 lbs. with a miter slot; seems to cover what you said you wanted.

View bubinga's profile


861 posts in 2690 days

#3 posted 04-04-2011 12:09 PM

You could mount the ,MLCS top braced like the pic below ,without removing your saws extension wing
Attach it to your wing ,and the existing rails,and brace it
You could get an Incra router fence

SALE! Save $53!
Cast-Iron Extension Table Top with Fence
plus our 1/4” thick Aluminum Insert Plate
(plate details…)
ONLY $289.95

-- E J ------- Always Keep a Firm Grip on Your Tool

View David Grimes's profile

David Grimes

2078 posts in 2662 days

#4 posted 04-05-2011 07:00 AM

Crank49 and bubinga,

Both of you obviously have concerns about the weight both of the extended length and/or the weight on the rails. I looked and agree with you guys. It will need support. I said I don’t want legs (for obvious reason of in the way), so I like the drawing, bubinga. Easy enough with channel or angle material.

The MLCS looks like a nice extension at a good price PLUS with a plate and a fence that is not too shabby at all. I’ll call them on the fit and especially the weight so I can experiment with added cantilevered weight (and possible tip over as Crank49 suggests) before I order. I could always ballast the lower left ! Frankensaw ! Just kidding.

I originally planned to take this saw off the legs and “work center” mount it. Hmmm. I’m just afraid if I throw the leg and lift assembly of the saw away… plus everything from the HF Dust Collector except the blower motor that there is a special place in hell for materials wasters like that.

So the aluminum plate is preferable to phenolic ? I am not experienced with phenolic resin except for circuit boards.

Thanks for the suggestions, guys.

-- If you're going to stir the pot, think BIG spoon or SMALL boat paddle. David Grimes, Georgia

View bubinga's profile


861 posts in 2690 days

#5 posted 04-05-2011 09:01 AM

I got the pic here (
I don’t think it would tip over , but maybe sag after a while,but I don;t know jack about your saw
Maybe you know ? you can have the plate pre drilled for your ,router .I don’t blame you for not wanting legs,makes it harder to sweep

-- E J ------- Always Keep a Firm Grip on Your Tool

View David Grimes's profile

David Grimes

2078 posts in 2662 days

#6 posted 04-06-2011 09:38 AM

Has anybody gone to the trouble and expense to install a nice router extension on a ts and then regretted it or wished they’d built a nice mobile floor cabinet instead ?

I’m 6’2 and my bench top router table is on a floor stand with the table height 45” off the floor. I’m thinking maybe I’m still stuck on the “workstation” thing.

-- If you're going to stir the pot, think BIG spoon or SMALL boat paddle. David Grimes, Georgia

View Bill White's profile

Bill White

4948 posts in 3983 days

#7 posted 04-06-2011 11:09 AM

Corian will scratch like crazy. I would not suggest it for that app.
If you don’t use legs, you’re gonna have a REAL balance issue, and I wouldn’t wanna be there when the saw tips over.


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