A jig for sharpening using a hand drill plus aluminum wheel - Router Forums
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post #1 of 12 (permalink) Old 08-12-2010, 11:57 AM Thread Starter
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Default A jig for sharpening using a hand drill plus aluminum wheel

Is there any sort of design for a shop made cradle to hold a hand drill for sharpening such as kitchen knives and a general use chisel?

I have seen cheap bench grinders and the expensive Tormeks and Jet systems.

On the cheap grinders, the speed is usually too high.

So if I have a variable speed hand drill, a simple aluminum oxide grind wheel and a cradle, I could do the sharpening I need at low speed and hardly any cost. Also I have no place to set up "machine shop" tools. The jig could be mounted on my Workmate as an example.

Has anyone seen this design and can a link be made to it? The design is usually with the drill upside down to find a flat side to secure and level it. I have seen this somewhere but cannot locate anything about such a project.
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post #2 of 12 (permalink) Old 08-12-2010, 12:05 PM
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Hi

Dremel makes one that at the right price and works well..

Amazon.com: Dremel 675 Lawn Mower and Garden Tool Sharpener Attachment: Home Improvement


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Quote:
Originally Posted by loninappleton View Post
Is there any sort of design for a shop made cradle to hold a hand drill for sharpening such as kitchen knives and a general use chisel?

I have seen cheap bench grinders and the expensive Tormeks and Jet systems.

On the cheap grinders, the speed is usually too high.

So if I have a variable speed hand drill, a simple aluminum oxide grind wheel and a cradle, I could do the sharpening I need at low speed and hardly any cost. Also I have no place to set up "machine shop" tools. The jig could be mounted on my Workmate as an example.

Has anyone seen this design and can a link be made to it? The design is usually with the drill upside down to find a flat side to secure and level it. I have seen this somewhere but cannot locate anything about such a project.



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post #3 of 12 (permalink) Old 08-12-2010, 12:24 PM Thread Starter
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Thanks for answering.

I wanted to get some experience with a wheel without the expense. Plus no Dremel tool here even though it is a good WI manufacturer.

I have some stones and two styles of those AccuSharp tools shown on the same page as the Dremel device. AccuSharp highly recommended esp. their tool for scissors.

My stone setup is not of good quality but helps me to learn technique.
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post #4 of 12 (permalink) Old 08-12-2010, 05:11 PM
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I have a Delta 6" variable speed grinder that does a great job.

You could also try the scary sharp method, especially on the chisel.

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post #5 of 12 (permalink) Old 08-12-2010, 09:57 PM Thread Starter
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Quote:
Originally Posted by AxlMyk View Post
I have a Delta 6" variable speed grinder that does a great job.

You could also try the scary sharp method, especially on the chisel.
I'll bite. What's the scary sharp method? Does that have to do with gluing pieces of sandpaper on glass?

I know the term but haven't heard of the method.
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post #6 of 12 (permalink) Old 08-13-2010, 12:25 AM
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Here is a short photo tutorial of the Scary Sharp method.

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post #7 of 12 (permalink) Old 08-13-2010, 01:57 AM
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The Scary Sharp (naff name) method works well.
I go down to 2500 and can shave the hairs off my arm.
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post #8 of 12 (permalink) Old 08-13-2010, 08:27 AM Thread Starter
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I was right then. Yes I've seen the sandpaper method and briefly tried it. This is
likely a more safe way to do things and gives control but also more messy. And yes, I think it would be limited to chisels.

It's too bad that the old style hand grind system with a crank cannot be found.

I've also seen systems made with a bicycle sprocket. But the drill mandrel seems to
be something that will work that I have. I'm just looking for a plan that has been refined rather than finding two boards and dropping the drill between 'em.
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post #9 of 12 (permalink) Old 08-13-2010, 03:59 PM
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I use the Drill Doctor 350X for sharpening drills. Works EXCELLENT! Even makes cheap drill bits work well.
I have used the Scary sharp method to sharpen plane blades and chisels and it works but it is time consuming. Invested in a Worksharp 3000 and am VERY happy with it. Does a much better job on the plane blades then I did.

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post #10 of 12 (permalink) Old 08-13-2010, 04:34 PM
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Quote:
Originally Posted by loninappleton View Post
Is there any sort of design for a shop made cradle to hold a hand drill for sharpening such as kitchen knives and a general use chisel?

I have seen cheap bench grinders and the expensive Tormeks and Jet systems.

On the cheap grinders, the speed is usually too high.

So if I have a variable speed hand drill, a simple aluminum oxide grind wheel and a cradle, I could do the sharpening I need at low speed and hardly any cost. Also I have no place to set up "machine shop" tools. The jig could be mounted on my Workmate as an example.

Has anyone seen this design and can a link be made to it? The design is usually with the drill upside down to find a flat side to secure and level it. I have seen this somewhere but cannot locate anything about such a project.
Ion,

I've not seen any fixture to hold a drill like you've described but you should be able to fashion something. You should be able to clamp a dril to an block of wood that you clamp into your workmate. I have seen hand drillls converted to mini drill presses with a special clamp. You may be able to make one with threaded rod and some miscellaneous hardware.

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