Hugh Comstock asks:
>I am using a Forstner 1 1/4" bit trying to drill a hole 1/8th" deep in a
>piece of 2"x2"
>x 1/4" birch ..... the wood burns and tends to bend before the hole is
>1/8th deep....what am I doing wrong?
Possibly a dull bit, improper backing, too much pressure. Forstner bits can
require more pressure than some others, but for a 1/8" deep hole, you should be
in and done before extra pressure is needed.
Are you using a portable drill or a drill press? Make sure whatever backer you
use is dead flat and thick enough to prevent deflection.
Charlie Self
"When we are planning for posterity, we ought to remember that virtue is not
hereditary." Thomas Paine
[email protected] wrote:
> On Thu, 21 Oct 2004 15:20:05 -0400, [email protected] (Hugh Comstock)
> wrote:
>
>>can Forstner bits be sharpened? Thanks Charlie
>
>
> yes.
...but if you don't know what you're doing, you're better off to buy a good
one that's been sharpened correctly to start with. If you don't know what
you're doing, you'll just make things worse. (DAMHIKT.)
--
Michael McIntyre ---- Silvan <[email protected]>
Linux fanatic, and certified Geek; registered Linux user #243621
http://www.geocities.com/Paris/Rue/5407/
http://rosegarden.sourceforge.net/tutorial/
On Thu, 21 Oct 2004 15:20:05 -0400, [email protected] (Hugh Comstock)
wrote:
>can Forstner bits be sharpened? Thanks Charlie
yes.
Forstner bits can be sharpened. I get results I am happy with with a
Moto Tool and 1" aluminum oxide cutoff disks.
bob g.
p.s. If if doesn't feel sharp to finger exploration, it need a little
touching up until it does.
Hugh Comstock wrote:
> Using drill press...with 1" wood base under piece being drilled...can
> Forstner bits be sharpened? Thanks Charlie
>
Dear DAMHIKT, don't give up. Sharpening is a very intuitive thing.
Some folks get around this with jigs and fixtures. More power to them
but if you spend enough time sharpening and using, you'll get a feel for
the angles you need do grind and the feel of the cutting edge to your
finger tip that will let you know when you've got what will work/what
you want.
bob g.
Silvan wrote:
> [email protected] wrote:
>
>
>>On Thu, 21 Oct 2004 15:20:05 -0400, [email protected] (Hugh Comstock)
>>wrote:
>>
>>
>>>can Forstner bits be sharpened? Thanks Charlie
>>
>>
>>yes.
>
>
> ...but if you don't know what you're doing, you're better off to buy a good
> one that's been sharpened correctly to start with. If you don't know what
> you're doing, you'll just make things worse. (DAMHIKT.)
>
Could the bit be spinning too fast? Try Setting DP to slowest speed
"Hugh Comstock" <[email protected]> wrote in message
news:[email protected]...
> I am using a Forstner 1 1/4" bit trying to drill a hole 1/8th" deep in a
> piece of 2"x2"
> x 1/4" birch ..... the wood burns and tends to bend before the hole is
> 1/8th deep....what am I doing wrong?
> Thanks,Hugh in Ohio
>
On Thu, 21 Oct 2004 13:50:00 -0400, [email protected] (Hugh Comstock)
wrote:
>I am using a Forstner 1 1/4" bit trying to drill a hole 1/8th" deep in a
>piece of 2"x2"
>x 1/4" birch ..... the wood burns and tends to bend before the hole is
>1/8th deep....what am I doing wrong?
>Thanks,Hugh in Ohio
Drill press is set to too high a speed?
On Thu, 21 Oct 2004 23:27:26 GMT, "toller" <[email protected]> wrote:
>Hopefully this is not your problem...
>
>I bought some extremely cheap forstners at a Homier sale. They are
>worthless junk, and burn almost immediately. (Oddly, a few of them aren't
>too bad, but most of them are worthless.)
>
>So, are yours a decent brand?
>
and the sharpening geometry *really* matters for forstner bits. it
might be that half or more of the problems with your cheapies is in
the sharpening and can be fixed.