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router bit speed/size

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Forum topic by Jbjeep posted 10-29-2020 11:39 AM 165 views 0 times favorited 1 reply Add to Favorites Watch
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Jbjeep

1 post in 33 days


10-29-2020 11:39 AM

I am new to leveling live slabs with a router sled. I have a 2.5HP plunge router with a 1/2 inch collet from harbor freight( not going to use all the time.) It IS NOT variable in speed and runs at 23000RPM max. My bit is a 2 inch by 1/2 inch bit that has no speed rating that I can find. I plan on taking 1/16 off each pass until level. My questions are…did I buy the wrong router because it cannot be turned down to a safer/slower speed? Can I use the plunge router and bit at 23000 safely? If I need a variable speed plunge router, do they sell one with a 1/2 inch collet? They seem to all be 1/4 inch if plunge with variable speed.


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View Fred Hargis's profile

Fred Hargis

6572 posts in 3410 days


#1 posted 10-29-2020 11:59 AM

1.) Probably, you need variable speed and to slow it down for that bit.

2.) If the bit isn’t too big. (See guidelines below)

3.) Lots (probably most) of them come with a 1/2” collet. Look for Milwaukee (5616), Bosch (1617), (maybe) PC, Dewalt, others I can’t remember. Most of them also have a 1/4” collet included.

This is from Rockler:

For a rough guide, here’s a typical maximum router bit speed chart:

Router Bit Diameter
Maximum Speed

Up to 1” 22,000 – 24,000 rpm

1” to 2” 18,000 – 22,000 rpm

2” to 2-1/2” 12,000 – 16,000 rpm

2-1/2” to 3-1/2” 8,000 – 12,000 rpm

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

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