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Forum topic by treesner posted 07-16-2016 04:56 PM 676 views 0 times favorited 11 replies Add to Favorites Watch
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treesner

167 posts in 867 days


07-16-2016 04:56 PM

what’s the technique for drilling holes in plywood (baltic birch) without getting splintering? I’ll be making holes with both forstner and breakpoints using a hand drill. What kind of speed should i run the drill at before going into the wood?


11 replies so far

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BurlyBob

5237 posts in 2168 days


#1 posted 07-16-2016 05:00 PM

Breakpoints are gonna splinter to some degree no matter what you do. I’ll start with a forstner on one side and finish on the other. Seems to work well enough for me.

View Bill White's profile

Bill White

4853 posts in 3863 days


#2 posted 07-16-2016 05:30 PM

It is FORSTNER if you will. Ain’t no such thing as a “forester” bit, and the Forstner bit are the best way to achieve what ya want.
Not tryin’ to be a smart a$$, just makes it easier for us to understand what you’re tryin’ to accomplish.
Next, what sized hole, what speed are ya running, etc.?
Bill

-- bill@magraphics.us

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treesner

167 posts in 867 days


#3 posted 07-16-2016 05:32 PM


It is FORSTNER if you will. Ain t no such thing as a “forester” bit, and the Forstner bit are the best way to achieve what ya want.
Not tryin to be a smart a$$, just makes it easier for us to understand what you re tryin to accomplish.
Next, what sized hole, what speed are ya running, etc.?
Bill

- Bill White

computer + auto correct..

I have some 1/4 holes i need to drill in the top for small removable dowels and 1.5” holes for drawer pulls

View MrRon's profile

MrRon

4627 posts in 3146 days


#4 posted 07-16-2016 05:40 PM

I find the higher the speed, the less splintering I get. You also need a backer board so you don’t get “tearout” on the back side. Make sure the bit is SHARP.

View johnstoneb's profile

johnstoneb

2781 posts in 2075 days


#5 posted 07-16-2016 05:42 PM

Tape and backer board with a forstner

-- Bruce, Boise, ID

View clin's profile

clin

792 posts in 898 days


#6 posted 07-16-2016 09:31 PM

I realize the OP didn’t give this as one of his options, but wouldn’t a brad point bit be the best choice. And I agree a backer board is a must.

-- Clin

View rwe2156's profile

rwe2156

2794 posts in 1383 days


#7 posted 07-17-2016 06:51 PM

Forstner bits should be run at high speed.

-- Everything is a prototype thats why its one of a kind!!

View Fred Hargis's profile

Fred Hargis

4872 posts in 2396 days


#8 posted 07-18-2016 11:25 AM

A good quality brad point (like the LV lipped bits) will really do a nice job if you put a backer board against it. I’ve good success with forstner bits as well, same thing …a backer board. Between the 2, the brad point seems to be more clean.

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

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MrRon

4627 posts in 3146 days


#9 posted 07-18-2016 08:54 PM

Since you will be using a forstner bit for the 1-1/2” hole, it will be difficult to do using a hand drill; you really need a drill press for that.

View devann's profile

devann

2246 posts in 2595 days


#10 posted 07-18-2016 09:50 PM

+1 what Clin & Fred said. Brad point and a secure backer board.

-- Darrell, making more sawdust than I know what to do with

View runswithscissors's profile

runswithscissors

2641 posts in 1927 days


#11 posted 07-19-2016 07:06 AM

I don’t like forester bits smaller than 3/8” inch, as they clog easily and don’t clear the chips. Brad point (by the way, what is a “breakpoint” bit? I’ve never heard of this) bits are better in the smaller sizes, especially good quality ones.

-- I admit to being an adrenaline junky; fortunately, I'm very easily frightened

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