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Porter Cable 7539 maximum bit size

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Forum topic by Woodendeavor posted 09-20-2013 12:45 PM 780 views 0 times favorited 3 replies Add to Favorites Watch
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Woodendeavor

276 posts in 2073 days


09-20-2013 12:45 PM

Does any one out there have a Porter Cable 7539 plunge router? I need to know the maximum radius bit it will take. I called their wonderful technical support phone number and after a few minutes of playing pass the caller I was disconnected. If you could measure the inside diameter of the plunge base not the sub base it would be greatly apprechiated


3 replies so far

View Mark Shymanski's profile

Mark Shymanski

5314 posts in 3179 days


#1 posted 09-21-2013 11:46 PM

If you are mounting it in a table (the only really safe way to use large bits) you could probably take the bottom plate off and make the hole in your mounting plate whatever size you need.

-- "Checking for square? What madness is this! The cabinet is square because I will it to be so!" Jeremy Greiner LJ Topic#20953 2011 Feb 2

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Woodendeavor

276 posts in 2073 days


#2 posted 09-22-2013 12:41 AM

I will not be using the sub base but the plunge base of the router does not have that large of a diameter opening. I am really scared that a 3 1/2” diameter raised panel bit may not fit. I was hoping that someone on here would have one and could measure for me.

View YusukeHeller's profile

YusukeHeller

6 posts in 87 days


#3 posted 10-25-2016 11:11 PM

I know this is old, but I stumbled across it looking for large diameter sub bases for my 7539s. Just in case anyone else finds this and has the same question as the original poster…

3 1/4” with the sub base OFF is the largest cutter you could run on this safely. Any larger than that and you are into the metal.

If you’re going to be throwing 3 1/2” cutters around you should be using a shaper. You will get an excellent cut on a shaper. My router table collects dust and is used as a stacking surface for misc crap and tools ever since I moved to a proper shaper with stock feeder set up. And if you get the spindle that accepts a collet you can run all of your 1/2” shank bits all the same.

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