Homemade cast iron router table extension

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Project by Nick posted 500 days ago 6120 views 1 time favorited 24 comments Add to Favorites Watch

Yes i know its not a wood project but its for woodworking
So a few weeks ago i got the idea to make a router table extension wing. the only problem with that is that the right side of the table already had a storage cabinet made for it. after thinking it over and doing so research i decided i would mill out a hole in my cast iron table top for the insert to fit into. Yes i know that i could have bought the benchdog one but I am a high school student who doesn’t have that much money to spend. I mean i bought my saw used for $500 so making it myself was the best bet. The metal shop at my school had just got a new Clausing CNC mill. unfortunately nether my teacher nor i could figure out how to use the CNC function so i had to hand mill the whole thing. after about 4 hours of combined mill time it fit my router plate perfectly! i did experience some warping in the cast iron but that was corrected once i got it home and mounted on the saw.

24 comments so far

View Wolffarmer's profile


393 posts in 1874 days

#1 posted 500 days ago

Wow, now that is just plain cool. Well done. I wonder how long it would take me to file a hole in mine.

-- That was not wormy wood when I started working on it.

View Julian's profile


507 posts in 1327 days

#2 posted 500 days ago

Great job Nick. It turned out great. You will get much more satisfaction out of projects like this than if you purchased a router table top.

-- Julian

View whitebeast88's profile


3505 posts in 827 days

#3 posted 500 days ago

very nice,great thinking….

-- Marty.Athens,AL

View Brenda T.'s profile

Brenda T.

36 posts in 508 days

#4 posted 499 days ago

A really nice job! Looks good, you have some skills.

-- Brenda T., Bodega Bay, CA.

View oldnovice's profile


3721 posts in 2004 days

#5 posted 499 days ago

Can’t get much better than that! Very good looking RT extension!

-- "I never met a board I didn't like!"

View Nick's profile


35 posts in 747 days

#6 posted 499 days ago

Thank you guys for all the positive support. I would have never guessed this reaction from the community.

View nwbusa's profile


1016 posts in 923 days

#7 posted 499 days ago

Super nice, great job!

-- John, BC, Canada

View Dusty56's profile


11644 posts in 2324 days

#8 posted 499 days ago

What kind of bits did you use to mill the CI with ?

-- I'm absolutely positive that I couldn't be more uncertain!

View Alan72's profile


94 posts in 669 days

#9 posted 499 days ago

That fantastic, do you have enough space to add a miter gauge.

View Nick's profile


35 posts in 747 days

#10 posted 499 days ago

So I am pretty new to the whole mental working side and because of that I don’t know the proper name of the bit I was using. In woodworking terms though it looked like a 3/8 spiral bit.

View violaine's profile


34 posts in 1459 days

#11 posted 499 days ago

whoah! space restiction is the root of all these!

it fits nicely!

let me pat your shoulder….tap tap!


View Nick's profile


35 posts in 747 days

#12 posted 499 days ago

I almost added a miter gauge until I realized that most slots are about 3/8 deep and my cast iron was that thickness so it wouldn’t have worked. The other reason I wasn’t too sure about was because I can use a sled on the fence just as easily as using a miter gauge.

View Nick's profile


35 posts in 747 days

#13 posted 499 days ago

I am in my parents garage and they don’t want me having a bunch of tools in there so I pretty much need all my tools on my table saw base (project post soon to come hopefully).

View Nick's profile


35 posts in 747 days

#14 posted 499 days ago


View Bluepine38's profile


2876 posts in 1722 days

#15 posted 499 days ago

Great project, and a good way to add a new tool to your shop. The table saw fence, with sacrificial fences
of varying thicknesses to match the router bits will work great. Now if you just make a few projects for the
house, I am sure the parents will be more willing to share the garage. Thank you for sharing.

-- As ever, Gus-the 75 yr young apprentice carpenter

showing 1 through 15 of 24 comments

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