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Frustrated with Drill Press

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Forum topic by becikeja posted 07-09-2016 05:54 PM 1097 views 0 times favorited 18 replies Add to Favorites Watch
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becikeja

645 posts in 2276 days


07-09-2016 05:54 PM

I would appreciate your thoughts on the following frustration I am experiencing.
I have some hard Mahogany that I am attempting to place a 1-7/8” diameter by 1/2” deep recess.

I am using a 1-7/8” wood river forstner bit. Its new and seems to be sharp.
The drill press is a table top model 1/3 HP craftsman that I have had for 25 years. Have never had any issues, but have never attempted to drill this size of recess either. I am spinning at 620 RPM’s which is the slowest I can go. I Have options of 1300 RPM’s and 3100 RPM’s as well

The bit seems to spin one revolution and just digs into the wood and stops. I have tried extremely light pressure almost as if sanding a hole and it still keeps binding up.

I am wandering the following.
1) Do I just not have enough HP to complete the task?
2) Is the belt just too old and wearing out. (But have not had any issues with smaller bits (normal 1/8” to 5/8” size holes)
3) Is the bit just really not sharp enough?
4) Should I be drilling at a different speed?

I would appreciate any thoughts on the frustration.

-- Don't outsmart your common sense


18 replies so far

View bbasiaga's profile (online now)

bbasiaga

756 posts in 1458 days


#1 posted 07-09-2016 06:04 PM

Sounds like not enough torque. The chart in.my drill press would want that bit going closer to 300rpm.

Try stepping up in bit size so when you finally get to the biggest but it is only cutting at the outside edges.

Brian

-- Part of engineering is to know when to put your calculator down and pick up your tools.

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johnstoneb

2143 posts in 1635 days


#2 posted 07-09-2016 06:30 PM

Is the motor stalling or the belt slipping? I have a Delta with 1/3 hp motor don’t have any problem up thru 3” forstner. Usually if it stalls it is the belt slipping. I do slow down the feed and can get to a slower RPM. The main reason for the slower RPM is to prevent burning the bit. Check the belt it might not be tight or it could be glaxed and slipping easily. Those problem wouldn’t show up as easily with the smaller bits.

-- Bruce, Boise, ID

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becikeja

645 posts in 2276 days


#3 posted 07-09-2016 06:33 PM

The belt slips when the bit stops clearly, but it seems tight

-- Don't outsmart your common sense

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johnstoneb

2143 posts in 1635 days


#4 posted 07-09-2016 06:42 PM

May be the belt is worn out. It’s only 25 yrs old. I think I need to replace the belts on mine also. thsy are only about 30 yrs old. I guess they probably don’t owe me anything.

-- Bruce, Boise, ID

View bigblockyeti's profile

bigblockyeti

3668 posts in 1183 days


#5 posted 07-09-2016 08:36 PM

Sounds like you need more hp, a newer belt and lower speed. If the belt is slipping, start there and then see how it performs for you.

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becikeja

645 posts in 2276 days


#6 posted 07-09-2016 10:35 PM

You mean after 25 years in a non-climate controlled shop a belt would wear out???
Things just don’t last anymore. :)
I feel like I just had a “DUH” moment. Never even thought that the belt could have been worn, but that’s got to be it. Thanks for waking up the brain. Completely overlooked it.

I also think I just want an excuse for a new drill press.

-- Don't outsmart your common sense

View HorizontalMike's profile

HorizontalMike

7144 posts in 2377 days


#7 posted 07-10-2016 12:48 AM

Bingo on MORE HP. I still have my 25yr old 8” Delta DP, but finally woke up a couple of years ago and bought the 20in Grizzly DP. I have NEVER regretted that move. I only wish I had done that 10 or 20yrs sooner… I got SOOOooo tired of constantly adapting, modifying, finagling with jigs and such with that 8in DP!...

}8-0

-- HorizontalMike -- "Woodpeckers understand..."

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chiseler

121 posts in 351 days


#8 posted 07-10-2016 11:41 AM

I would use a plywood template and a short top bearing template bit for the router.Even if you had to bore multiple holes in your template.

-- Scott.Triangle,NY Becareful and don't forget...They cut meat too!

View RandyinFlorida's profile

RandyinFlorida

180 posts in 1530 days


#9 posted 07-10-2016 12:48 PM

+1 for Chisleler.

-- Randy in Crestview Florida, Wood Rocks!

View HorizontalMike's profile

HorizontalMike

7144 posts in 2377 days


#10 posted 07-10-2016 11:51 PM



I would use a plywood template and a short top bearing template bit for the router.Even if you had to bore multiple holes in your template.
- chiseler

Been there done that,... and THAT is why I finally bought the 20in DP. Look at my workbench, my FIRST major WW project. I used templates and a hand drill to drill the 3/4” holes in the laminate top. I got away with finagling BUT that taught me better. At some point we ALL want more convenience… ‘nuff said…

-- HorizontalMike -- "Woodpeckers understand..."

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chiseler

121 posts in 351 days


#11 posted 07-11-2016 02:29 AM

I got the drill press.I would still use the router:-)

That’s a lot a holes Mike:-) nice job

-- Scott.Triangle,NY Becareful and don't forget...They cut meat too!

View becikeja's profile

becikeja

645 posts in 2276 days


#12 posted 07-18-2016 10:01 AM

Update: I bought a new belt and tried it this weekend. The new belt eliminated the slip problem, but did not get the job done. The bit starts off ok, and creates nice shavings which maintains my confidence in the bits sharpness. But the bit binds quickly even with very little downward pressure and gets very hot. I need to slow it down and a get a bit more HP.

-- Don't outsmart your common sense

View distrbd's profile

distrbd

2227 posts in 1909 days


#13 posted 07-18-2016 02:28 PM


Update: I bought a new belt and tried it this weekend. The new belt eliminated the slip problem, but did not get the job done. The bit starts off ok, and creates nice shavings which maintains my confidence in the bits sharpness. But the bit binds quickly even with very little downward pressure and gets very hot. I need to slow it down and a get a bit more HP.

- becikeja


The only time I had the same problem as what you’re experiencing was, when I used” 2.5” Grizzly multi spur design forstner bit which has screw tip (instead of the ususal pyramid shaped spike),this type of tip bites into the wood and digs in.

To solve the problem I ended up drilling a pilot hole wider than the screw tip of the forstner bit,this way the screw in the center of the bit had no place to grab on the wood .

I must add,the bits I mentioned work well with a hand drill like Milwaukee super hawg which has tons of torque.

-- Ken from Ontario, Canada

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GR8HUNTER

1134 posts in 175 days


#14 posted 07-18-2016 02:47 PM

sounds to me like you just want a new drill press …...LMAO @ becikeja

-- Tony Reinholds,Pa. REMEMBER TO ALWAYS HAVE FUN

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becikeja

645 posts in 2276 days


#15 posted 07-19-2016 01:53 AM



sounds to me like you just want a new drill press …...LMAO @ becikeja

- GR8HUNTER

SHHHHHHHH :)

-- Don't outsmart your common sense

showing 1 through 15 of 18 replies

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