Forstner bits and drill press

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Forum topic by rockmolsen posted 08-18-2014 01:26 AM 992 views 0 times favorited 6 replies Add to Favorites Watch
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230 posts in 1406 days

08-18-2014 01:26 AM

I have a Delta 10” drill press and 1/4 HP. I am trying to drill a 2 1/2 in hole in several different hardwoods. With very little pressure the drill binds or stops – even tried a brand new bit. I was attempting to make a bracelet blank using some Mango and Monkey Pod. Is my drill press not powerful enough for this?

-- Rick --------The measure of who we are is what we do with what we have.

6 replies so far

View crank49's profile


4026 posts in 2804 days

#1 posted 08-18-2014 01:34 AM

You did not mention what speed you are trying to run the drill.

1/4 hp is way under powered, but could work if the speed was slow enough.

Most small drill presses with small motors seem to be designed to further piss you off by not going below 500 RPM.
Won’t work. You need to be at 200 RPM or less with a bit that size.

You might have better luck with a hole saw.

View waho6o9's profile


8025 posts in 2410 days

#2 posted 08-18-2014 01:57 AM

Maybe the belt’s slipping…

View rockmolsen's profile


230 posts in 1406 days

#3 posted 08-18-2014 02:06 AM

I was running at lowest speed possible 600 RPm. The belts are not slipping the motors is just stopping

-- Rick --------The measure of who we are is what we do with what we have.

View jonah's profile


1443 posts in 3131 days

#4 posted 08-18-2014 11:46 AM

600 RPM is too fast for a bit that big. You might be able to get away with 400 RPM, but 300 or even 200-250 would be better.

Sadly, if that’s as slow as your drill press goes, then you are out of luck. Any friends that have floor-standing DPs that you could use to make the holes?

View papadan's profile


3584 posts in 3201 days

#5 posted 08-18-2014 11:55 AM

Clamp your board down so it cannot move. Dill through with 3/4 bit and then redrill in 1/2” incriments.

View Gene Howe's profile

Gene Howe

9745 posts in 3261 days

#6 posted 08-18-2014 12:44 PM

Your DP is under powered.
I’d make a template and use a router.

-- Gene 'The true soldier fights not because he hates what is in front of him, but because he loves what is behind him.' G. K. Chesterton

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