I'm often asked how to sharpen carving tools. I'm a big
believer in a power sharpening system because it allows you
to sharpen your tools quickly - which means you spend more
time carving and less time sharpening.
In my carving
classes, I demonstrate the use of a sharpening disk mounted
on a lathe. The advantages of this system are that the disk
can be made for little money, and it works well, as long as
you have a lathe.
But a lathe is a good investment compared to a dedicated
sharpening system, like a Tormek. You can purchase a
mini-lathe for maybe $200 if you catch them on sale (Jet was
offering their mini-lathe for $200 at the last woodworking
show here, and there was a $25 rebate on it.)
purchase a Tormek, all you can use it for is sharpening. If
you purchase a lathe, you can use it for sharpening, and you
can use it as a lathe.
I'm not going to demonstrate how to use the disk in this
tutorial - it's best learned from a hands on demonstration.
What this tutorial is about is how to make the disk. So, if
you've used a sharpening disk in the past, or seen one used,
or can figure out how to use one from seeing the pictures,
this tutorial will be of use and help to you.
A sharpening disk has sandpaper on the face (I use P220
grit) and leather around the rim. The sandpaper is used for
shaping the edge, or repairing damage, such as when you drop
a tool on the concrete floor. Otherwise, all you'll use is
the leather around the rim to hone the edge.
I use a green
honing compound that's available in almost any woodworking
supply store - I bought mine at Woodcraft. It's inexpensive
- I don't remember the exact cost, but I'm sure it was less
than $10 - and that will last you a very long time.
I'm going to make the disk out of 3/4" MDF. You can make
your disk almost any size, but I'm going to make it the
width of a sheet of sandpaper, about 9". I have a circle
cutting attachment for my bandsaw table and I set it a bit
more than 4.5" because I want some extra material so I can
trim to size.
I put my MDF on the pin, and cut by pivoting the MDF.