[Sharpening-jig] My Sketchup Model

[Bill Wheaton]

Here is a link to my sketchup model for a sharpening jig like your's,
Brent. Others may benefit.
http://sketchup.google.com/3dwarehouse/details?mid=a6d2e830144687abdc0f894a0caa6aca

It features a glass top that is storable inside a box with the other
parts to keep it from breaking. I like playing with sketchup almost
as much as fiddling around out in my workshop.

I haven't made this jig yet. I made a simpler one almost exactly like
yours. No glass yet. I tried, but kept shattering. I'll take it
down to ace and pay them do it :). But I tried it, and got an iron
crazy sharp.

So now I have a question. At our local Woodcraft store they had 1200,
1500, and 2000 grit wet sandpaper. The brand is Norton (like the 6"
stone I have). After I ground the primary bevel, (which took a while
on my sainted fathers old Bailey #5) I started with the grits.

I used water on the back of the paper and put it on clean 1/4" glass
and squeegeed it down. But when I went to put oil on the paper and
began the micro-bevel, with one .1" slip, it gouged into the paper.

I worked around it, and eventually went to the other grits, and even
with light pressure, it kept happening.

Are you using some kind of special paper? Is that 3m paper so
different than the Norton I've got?


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[Brent Beach]

Hi Bill

Nice model. What texture did you use for the wood parts?

I had not realized that you combined the jig and the stone vise and use
the stone vise to house the entire setup.

Not sure what problems you were having with the glass. Perhaps, if the
glass is unsupported, you should look for a piece of tempered glass
rather than window glass. Would be hard to find, but the glass from a
scanner might work.

On the paper, I have never been able to find Norton wet/dry so have no
experience. I have though use glass plates - regular glass, 3" by 8" -
in my stone vise and it worked just fine. However, I glued the paper to
the glass. If you have 3 pieces of glass and glue it down you won't need
to have water around when you are sharpening. Glued down the paper will
not rise in front of the blade and keep getting cut. Glued down the
paper stays flat. If the paper rises in front of the tool you will get a
rounded bevel - not good even if it does not cut the paper.

The 3M paper I use has a polyester backing - very strong but easily cut
if you make a mistake. I have also 3M wet/dry which has a paper backing
and it works ok as well - no cutting issues is you are reasonably
careful. So, I expect the Norton paper is just fine.

Can you tell me more about the Norton paper? Is there a code on the
paper to identify the exact type of paper in use?

Brent

On 23/04/2010 4:14 AM, Bill Wheaton wrote:
> Here is a link to my sketchup model for a sharpening jig like your's,
> Brent. Others may benefit.
> http://sketchup.google.com/3dwarehouse/details?mid=a6d2e830144687abdc0f894a0caa6aca
>
> It features a glass top that is storable inside a box with the other
> parts to keep it from breaking. I like playing with sketchup almost
> as much as fiddling around out in my workshop.
>
> I haven't made this jig yet. I made a simpler one almost exactly like
> yours. No glass yet. I tried, but kept shattering. I'll take it
> down to ace and pay them do it :). But I tried it, and got an iron
> crazy sharp.
>
> So now I have a question. At our local Woodcraft store they had 1200,
> 1500, and 2000 grit wet sandpaper. The brand is Norton (like the 6"
> stone I have). After I ground the primary bevel, (which took a while
> on my sainted fathers old Bailey #5) I started with the grits.
>
> I used water on the back of the paper and put it on clean 1/4" glass
> and squeegeed it down. But when I went to put oil on the paper and
> began the micro-bevel, with one .1" slip, it gouged into the paper.
>
> I worked around it, and eventually went to the other grits, and even
> with light pressure, it kept happening.
>
> Are you using some kind of special paper? Is that 3m paper so
> different than the Norton I've got?
>
>

--

Victoria, B.C., Canada

[Bill Wheaton]

Wow. Just Wow.
I just spent the afternoon finishing the jig and sharpening my dad's
old Bailey #5. I always thought there was something wrong with it.
As a kid, I remember that he sharpened it now and then with one of
those 6" Norton stones. It made doors fit etc.. But while I could
never beat him in most every way, I think I finally exceeded him in
this.

I got done cleaning the plane with that baby oil soaked cloth, and
getting the rust off, and making the sole smooth again. And then I
glued the tote back together and took everything apart and lubricated
the brass depth knob and the angle lever and the cleaned the 75 year
old cocoon out from under the frog.

It sparkled.

Then the moment of truth. I pulled out an old scrap of cherry from a
tree I cut down about 10 years ago.

Thinnnnnn shavings. Oh man. I have never seen anything like that
before. And so easy. and the wood underneath was beautiful. So
smooth. The finest sandpaper would ruin it.

And it was fast too, that's what I can't get over.

My advice to anyone thinking of buying a planer or jointer is to make
this jig first and see if you don't agree with me that you might not
need to spend hardly anything to get even better results than you can
from a loud $500 machine.

Brent, I want to thank you for inspiring me to do this little project,
I am amazed and very pleased with the result.

-Bill