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RPM for big Forstner

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Forum topic by RodNGun posted 596 days ago 668 views 0 times favorited 8 replies Add to Favorites Watch
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RodNGun

117 posts in 898 days


596 days ago

What is the right RPM for a 3.5” Forstner bit?


8 replies so far

View oldnovice's profile

oldnovice

3573 posts in 1962 days


#1 posted 596 days ago

View Monte Pittman's profile

Monte Pittman

13190 posts in 933 days


#2 posted 595 days ago

Ssssslllllllllooooooowwwwwwww :-)

Interpreted as “Slow”

-- Mother Nature created it, I just assemble it. - It's not ability that we often lack, but the patience to use our ability

View BobLang's profile

BobLang

96 posts in 1995 days


#3 posted 595 days ago

About half the slowest speed on your drill press.

Unsolicited advice-clamp the wood down before boring.

-- Bob Lang, http://readwatchdo.com/

View lumberjoe's profile

lumberjoe

2824 posts in 843 days


#4 posted 595 days ago

oldnovice, thanks for that PDF! I’m going to laminate it and hang it from the back of my drill press.

-- www.etsy.com/shop/KandJWoodCrafts

View tyskkvinna's profile

tyskkvinna

1308 posts in 1581 days


#5 posted 595 days ago

As slow as you can go and clamp that sucker down… and then find some music you really, really like because you’re going to be grooving to it for a while.

-- Lis - Michigan - http://www.missmooseart.com - https://www.etsy.com/people/lisbokt

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paratrooper34

760 posts in 1547 days


#6 posted 595 days ago

Amen…..the slowest setting you have on your drill with a solid clamping system.

-- Mike

View 8iowa's profile

8iowa

1489 posts in 2356 days


#7 posted 595 days ago

250 rpm on a press with a lot of torque.

-- "Heaven is North of the Bridge"

View MonteCristo's profile

MonteCristo

2094 posts in 783 days


#8 posted 594 days ago

As others are saying, slow, but also watch how fast you feed the bit. A bit that size can pull your chuck right off its shaft – I have seen it happen.

-- Dwight - "Free legal advice available - contact Dewey, Cheetam & Howe""

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