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This video is an excellent description of the technique:
Regards,
Mark
markrages@gmail
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Good to know.
That said, they can pry my Drill Doctor from my cold dead hands before I'll let it go.
On Monday, August 5th, 2024 at 3:47 PM, Mark Rages <markrages@...> wrote:
This video is an excellent description of the technique:
Regards,
Mark
markrages@gmail
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Concur on the Drill Dr..? But when you've got bigger than 1/2 inch .......
On Monday, August 5, 2024 at 12:52:26 PM PDT, chrisser via groups.io <chris.kucia@...> wrote:
Good to know.
That said, they can pry my Drill Doctor from my cold dead hands before I'll let it go.
On Monday, August 5th, 2024 at 3:47 PM, Mark Rages <markrages@...> wrote:
This video is an excellent description of the technique:
Regards,
Mark
markrages@gmail
|
On Mon, 5 Aug 2024, Arthur Coe wrote: Concur on the Drill Dr..? But when you've got bigger than 1/2 inch .......
On Monday, August 5, 2024 at 12:52:26 PM PDT, chrisser via groups.io <chris.kucia@...> wrote:
Good to know.
That said, they can pry my Drill Doctor from my cold dead hands before I'll let it go.
On Monday, August 5th, 2024 at 3:47 PM, Mark Rages <markrages@...> wrote:
This video is an excellent description of the technique:
Regards,
Mark
markrages@gmail i have an extra 750x i would like to get rid of i inherited it from someone
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I agree The drill doctor is great
?
I given a drill doctor but donate becauseI I did not use the drill doctor I was use to using a 6" bench grinder. On large drilled a angle grinder.?
Most would never sharpen the numbers I did for father.?
I would very handy tool when first learning?
?
Dave?
?
?
On Mon, Aug 5, 2024 at 01:10 PM, Arthur Coe wrote:
?
Concur on the Drill Dr..? But when you've got bigger than 1/2 inch .......
?
On Monday, August 5, 2024 at 12:52:26 PM PDT, chrisser via groups.io <chris.kucia@...> wrote:
?
?
Good to know.
?
That said, they can pry my Drill Doctor from my cold dead hands before I'll let it go.
?
On Monday, August 5th, 2024 at 3:47 PM, Mark Rages <markrages@...> wrote:
This video is an excellent description of the technique:
Regards,
Mark
markrages@gmail
|
??? I've had one of teh older 75 or maybe 750 Drill Dr that does
up to 3/4 bits , I loved when I forst got it . Paid for itself @
20 times that first week . I started getting? disillusioned with
it a few years back . A couple months ago I found a brand new
wheel for it , I'm back to happy with it .
animal
On 8/5/24 7:47 PM, davesmith1800 wrote:
toggle quoted message
Show quoted text
I agree The drill doctor is great
?
I given a drill doctor but donate becauseI I did not use the
drill doctor I was use to using a 6" bench grinder. On large
drilled a angle grinder.?
Most would never sharpen the numbers I did for father.?
I would very handy tool when first learning?
?
Dave?
?
?
On Mon, Aug 5, 2024 at 01:10 PM, Arthur Coe wrote:
?
Concur on the Drill Dr..?
But when you've got bigger than 1/2 inch .......
?
On Monday, August 5, 2024 at 12:52:26 PM PDT,
chrisser via groups.io
<chris.kucia@...> wrote: ?
?
Good to know.
?
That said, they
can pry my Drill Doctor from my cold dead hands
before I'll let it go.
?
On
Monday, August 5th, 2024 at 3:47 PM, Mark Rages
<markrages@...> wrote:
This video is an excellent description of
the technique:
Regards,
Mark
markrages@gmail
|
I hand sharpen my larger bits and custom bits. For many years I have had 2 drill doctors, one is set up to handle up to 3.4" and left hand bits. However my go to is my Grizzly H8203 that I acquired at the tent sale for $40 several years back. It was new, never used other than plugged in and it did not work (hence why i got it so cheap) The problem was a broken wire at the fuse holder. I do love a deal!
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I have a drill doctor 750x.? Uses a diamond wheel.? But most of my are high speed.? I need borazon.
So I found this at Travers -
There's a lot of knock offs online... It splits, adjusts from 85 to 140 degree and you can get CBN wheels for it as well as other parts:
And they have one for up to 1" bits.? A bit pricey but worth it.
And as I mentioned you can find knock offs
Grizzly -
$230 - and again its a CBN wheel
Amazon - $269 with both diamond and CBN
The big one is only $580
toggle quoted message
Show quoted text
On 8/6/2024 9:45 AM, ram50v8efi via groups.io wrote: I hand sharpen my larger bits and custom bits. For many years I have had 2 drill doctors, one is set up to handle up to 3.4" and left hand bits. However my go to is my Grizzly H8203 that I acquired at the tent sale for $40 several years back. It was new, never used other than plugged in and it did not work (hence why i got it so cheap) The problem was a broken wire at the fuse holder. I do love a deal!
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I just ordered a Vevor drill sharpener as a birthday present for myself.? Lots of dull drill bits to work on.
?
Mark
?
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On Tue, Aug 6, 2024 at 11:13 AM, Mark Kimball wrote:
I just ordered a Vevor drill sharpener as a birthday present for myself.? Lots of dull drill bits to work on.
?
Mark
?
Great way to lean
?
Dave?
?
?
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Having a hard bolt break off in an automotive chassis application I knew it would be a problem. After making a guide bushing and clamping it in place I resharpened a masonry?drill left?handed. Running te drill in reverse and guided by the bushing I drilled through the bolt until?it grabbed and unscrewed the remains. Other methods have led to disasters!
On Tue, Aug 6, 2024 at 12:35?PM davesmith1800 via <davesmith1= [email protected]> wrote: On Tue, Aug 6, 2024 at 11:13 AM, Mark Kimball wrote:
I just ordered a Vevor drill sharpener as a birthday present for myself.? Lots of dull drill bits to work on.
?
Mark
?
Great way to lean
?
Dave?
?
?
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I've thought about building a version of gadgetbuilder's 4-facet sharpener (to be found ) but for now have decided to see how the Vevor does.? That vendor can be a mixed bag in terms of quality so it's a bit of a gamble on my part.? I should know soon, I just got a notification that it will arrive sometime between now and 8/12.? Hopefully in one piece.
?
The Grizzly version uses ER20 collets but it remains to be seen if the Vevor does.? I didn't see any specifics in their product literature.
?
Gadgetbuilder's design has been built by quite a few other folks, including one version that uses mostly 3D printed parts.? Lots of interesting variations, the main thing is to achieve the right geometry for the profile(s) you want.? IIRC, some folks have built adapters for it so they can sharpen end mills.? Probably just the bottom face, that's the easiest to sharpen.
?
?
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since vevor goes up to 13mm bits, that would be the top end for ER20 collets. On the larger machine (MRG-20 - link below) on the comments I found vevor answering the collet size question with "
3-13 is ER20, and 14-20 is ER25"
Regular ER25 don't go that high and if you look at that product, the collets are non-standard)
So vevor and grizzly both use ER20 collets.
It is possible that the guts of both machines are the same, with the grizzly having the right side rotated 90 degrees from the vevor.
On Wed, Aug 7, 2024 at 9:35?AM Mark Kimball via <markkimball51= [email protected]> wrote: I've thought about building a version of gadgetbuilder's 4-facet sharpener (to be found ) but for now have decided to see how the Vevor does.? That vendor can be a mixed bag in terms of quality so it's a bit of a gamble on my part.? I should know soon, I just got a notification that it will arrive sometime between now and 8/12.? Hopefully in one piece.
?
The Grizzly version uses ER20 collets but it remains to be seen if the Vevor does.? I didn't see any specifics in their product literature.
?
Gadgetbuilder's design has been built by quite a few other folks, including one version that uses mostly 3D printed parts.? Lots of interesting variations, the main thing is to achieve the right geometry for the profile(s) you want.? IIRC, some folks have built adapters for it so they can sharpen end mills.? Probably just the bottom face, that's the easiest to sharpen.
?
?
--
Buffalo John
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Here's my variant:
This grinder, with its large table is going to be extended for lathe
tool processing.
Some holes are to be added to the plate as well as a vise for
gripping the shafts.
Note the table displacement : a rack made with an M14 bolt cut in
the middle and a wheel machined with an M14 tap as a hobbing cutter.
Currently, I'm building a Quorn variant.
The Gadgetbuilder's design is not easy to adapt for grinding milling
cutters and I was in a hurry to get my drill bits correctly ground.
On 07.08.24 18:35, Mark Kimball via
groups.io wrote:
toggle quoted message
Show quoted text
[...]
?
Gadgetbuilder's design has been built by quite a few other
folks, including one version that uses mostly 3D printed parts.?
Lots of interesting variations, the main thing is to achieve the
right geometry for the profile(s) you want.? IIRC, some folks
have built adapters for it so they can sharpen end mills.?
Probably just the bottom face, that's the easiest to sharpen.
|
Your rendition looks pretty nice, congratulations!?
?
I haven't seen a version that uses a rack & pinion to get the transverse motion, yet another interesting variation.? As I mentioned earlier, there are many ways to get the same end result -- as long as the presentation of the drill bit to the grinder has the proper geometry.
?
Mark
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Tha'ts one sweet lookin unit ! Are there any drawing around for
it somewhere ?
thanks
animal
On 8/9/24 3:27 AM, Pierre-Raymond
Rondelle via groups.io wrote:
toggle quoted message
Show quoted text
Here's my variant:
This grinder, with its large table is going to be extended for
lathe tool processing.
Some holes are to be added to the plate as well as a vise for
gripping the shafts.
Note the table displacement : a rack made with an M14 bolt cut in
the middle and a wheel machined with an M14 tap as a hobbing
cutter.
Currently, I'm building a Quorn variant.
The Gadgetbuilder's design is not easy to adapt for grinding
milling cutters and I was in a hurry to get my drill bits
correctly ground.
On 07.08.24 18:35, Mark Kimball via
groups.io wrote:
[...]
?
Gadgetbuilder's design has been built by quite a few other
folks, including one version that uses mostly 3D printed
parts.? Lots of interesting variations, the main thing is to
achieve the right geometry for the profile(s) you want.? IIRC,
some folks have built adapters for it so they can sharpen end
mills.? Probably just the bottom face, that's the easiest to
sharpen.
Attachments:
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Hi Mike,
no, there aren't. I designed it with sketchup regarding the basic
Gadgetbuilder's idea, with the experience I got from the CNC that
I designed some years ago from the scratch, and using what I had
in my stock plus some parts I bought on the net.
The base and the feet are parts of an very old steel chassis (the
hammered style paint successfully masking the rust pits !), the
motor has a three-phase winding plugged on the home grid, with a
capacitor recreating the 3rd phase. All the 2017 plates were
scraps bought on the net. The rails and the diamond wheel come
from Aliexpress. The rubber dust protections were donated by a
retired shoemaker !
It was more difficult to find materials at a reasonable price
than designing the grinder !
On 10.08.24 02:39, mike allen via
groups.io wrote:
toggle quoted message
Show quoted text
Tha'ts one sweet lookin unit ! Are there any drawing around for
it somewhere ?
thanks
animal
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It looks a bit like the Worden tool and cutter grinder.
?
Mike
?
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If look the rake angle of a drill bit and use the same angle for lathe turn bits. Most metals like A36 will cut like butter.
Do not try this with brass it will pull tool bit into the material?
?
Dave?
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Actually, brass does the same thing with drill bits! The usual fix is to stone a slight flat, instead of a sharp cutting edge, "dulling" the drill bit.
?
Roy
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chrisser
davesmith1800
ram50v8efi
BuffaloJohn