I was taught how to sharpen drill bits on a bench grinder, but it is a
"pita" and slow. Any one have experience with various drill bit
sharpeners on the market. There is one model called "drill doctor" at
the Lowes, and Harbor Freight tools has a cheep unit I assume made on
thanks in advance
I have one of those B&D drill sharpeners for 20 years and I have actually
sharpened a drill with it a few times but it usually just screws them up. To be
honest I haven't really used it enough to use it well. I assume if you sat
there and played with getting the setup right it would work OK ... for that
drill. Get another size and start over.
Drill Doctor works fine. You might want to go to <http://www.drilldr.com
and read up on the various models. They're for twist drills and
carbide-tipped masonry bits only--won't do brad point or Forstner or spade
or anything else, but the more "deluxe" models can do split points.
Reply to jclarke at ae tee tee global dot net
But why? Get a good set to start, treat them right then replace them if
they actuall do get dull. I bought a set for like $150 and the have lasted
me for 7 years on metal and wood. Sometimes you break one but you can buy
them as singles too.
I'd consider getting some of my carbide mill bits sharpened but would throw
away drill bits.
I'm sorta at your same conclusion but a different path. I've invested in
good brad-points and forstners. Drill Doctor's (DD) can't sharpen those. I
treat those well.
For twists, I sully down to Wal-Mart once a year and buy a set of Black n'
Decker for $9. At that rate, I can buy almost 5-10 years worth before it
would have made more sense to invest in a DD.
When I screw up a bit, it's almost always at a time when the store is either
closed or inconvenient to go visit. If for no other reason, I'd just as soon
resharpen mine if I could. I don't have any trouble justifying (in my own mind)
spending $50 to be able to do this.
On Wed, 4 Aug 2004 20:19:04 -0400, "Mortimer Schnerd, RN"
I inherited from my grandfather a box of maybe 50 lbs of drill bits,
many in the 1-2" diameter range. it would cost real money to buy all
of those new, but a couple of hours with the grinder and a jig and
they're all ready to go...
I can't believe you guys don't seem to touch up drill bits any more
often than you indicate. I use a bench grinder to get the basic angle
and relief. I thin the web a little when needed and fine tune the edge
with a 1 1/2 inch aluminum oxide disk in the moto tool. I run a finger
over the edge about every time I use the bit. If it feels or looks like
it's in need, the moto tool, connected through a sewing machine foot
control, is right at arm's reach on the bench. I can't imagine doing
without that little tool.
Like you I was taught to sharpen drills free hand using a bench grinder, but
alas it is a "use it or loose it" skill that I don't do well these days;
however, it definitely is not slow IMHO.
The Drill Doctor is very much overpriced and under peckered IMHO.
Standard jobber drill bits can be replaced in sets at relative low cost for
Can buy a lot of replacement drill sets for less money than the cost of a
Brad points are another matter.
SFWIW, I never developed the skill to sharpen them free hand using a bench
S/A: Challenge, The Bullet Proof Boat, (Under Construction in the Southland)
Funny you should mention that: my neighbor loaned me his model 300 Drill Doctor
today and I sharpened all my bits tonight. I was impressed with it once I got
started cranking out the bits. The actual machine seems to be cheaply made and
yet it works perfectly. I used an old POS bit to learn on... once I had the
alignment figured out it was all downhill from there. The smaller the bit, the
faster the sharpening. With a really small bit you can overheat it if you fool
with it too long. That didn't seem to be a problem with any reasonable sized
I gotta get one of these.... I think the model 300 is about $100; Woodcraft
sells the model 500 for $150.
On Wed, 4 Aug 2004 03:13:00 -0400, "Mortimer Schnerd, RN"
So how does it do with WOODWORKING bits? Spade? Forstner?
Why are all of you fawning over a sharpener for -metal-
drilling bits? Jus cuz it's Handyman of America Approved?
LJ: Who sharpens his occasional metal drill bits to usability
by hand on the 1" belt sandah; hand-files auger, forstner
and brad point bits to perfection with a Nicholson auger file
bit ($8.50 from Lee Valley) and/or a 4" triangular file; and
doesn't understand ANY of the hoopla over Drill Doctors (which
are made 43 miles down the street from me).
- Let Exxon send their own troops -
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Picador (swinging guide mounted next to an existing grinder) is good
and quite cheap, but won't work on less than 1/4" and is increasingly
hard to use with smaller drills (problems with the alignment tooth)
Drill Doctor ought to work, but some of them just don't (problems with
the chuck). If you have a good one, I can believe it works quickly and
effectively. Maybe in the USA you can get some product support, but
I'd not recommend them to anyone in the UK who didn't want an
expensive shelf ornament.
On the whole though, drill bits are cheaper than an investment in good
I just bought a drill doctor model 300 at Home Depot
on sale for 49.95. At that price, I couldn't pass it up.
I must have 200 or so bits that I kept tossing in a can
over the years as they became dull. Some of the larger
ones were $10-$15 each, not to mention the masonry
bits, so I figured it might be worth trying.
Anyway, the Drill Doctor works great. It has easily
paid for itself already - and then some - and I
haven't even put a large dent in my old bits.
What I like is that it takes about 1 minute to sharpen a bit - longer
as the size increases. The angle is perfect (as far as I can tell) and
the very dull bits come out razor sharp - even broken bits!
I highly recommend this "device".
Hey, thanks! I just visited their (HD's) website and it's still on sale. I had
thought about getting the model 500 but for this kind of price I wouldn't be
able to justify it. Plus now I know the model 300 can do what I need it to do
since I spent yesterday evening sharpening bits on my neighbor's.
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