Sharpening Made Easy
Knife Sharpening Information and Equipment
Belt Knife Sharpening.
I no longer make low speed belt sander knife sharpeners. This
page will explain alternatives including how to make your own.
We no longer make low speed belt sander knife
sharpeners. Our belt sharpeners were modified 1" x 30" Harbor
Freight belt sanders. They
were designed to be used horizontally so that the belt moves away from the
user for added safety. They may also be used in the conventional
vertical position. The sharpener has a straight section for flat
bevels and a slack belt section for convex bevels. Belts are easily
changed in seconds, and are available in grits from 40 to 1200. An
efficient setup is a belt sharpener with a 120 grit belt to make your
primary bevels and paper wheels for the final
The 12 volt Knife Sharpener was developed for use in produce harvesting
where a cutter may be making 12 to 15,000 cuts a day. See Salinas.htm The
110 Volt AC model is identical except for having the original 110V motor
and pulley. This results in a higher belt speed and faster grinding,
but care must be used to prevent over heating when using this
Buy a Viel Tools S5 belt sander.
This is the belt sander I use.
There is also a variable speed version available.
Low speed belt sander choices:
AMK Tactical knife sharpener https://www.amktactical.com/
House of Blades belt sharpening system http://www.houseofblades.com/
Make you own using these photos as your guide. For a basic high
speed system use a 1"x30" belt sander such as the Harbor Freight 2485 https://www.harborfreight.com/
They sell for about $40. Several companies make this modification
and sell they for up to $400. The base can be made of wood; the one
in the photo is plastic cutting board material. Cut about a 2" hole
for the adjustment knob, a doorknob hole saw works well. Bolt base
to the sander with two 1/4" bolts into the frame (visible in the last
photo) and one small angle bracket (visible in first photo). If you
are handy you may be able to change the motor and pulley to make a low
machine pictured above is the 12 VDC model we used to make. If you want to make one
use a Dayton 4Z144 1/14 hp DC motor from WW Grainger or the equivalent
motor from Rae Motors. I might upgrade to 1/10 hp if I had it to do again.
Make sure your wire and fuse are big enough to carry the current.
You will have to have a machinist make a 2" pulley to fit the motor.
For additional belts
we recommend Lee Valley Tools
For a knife sharpening
guide see https://www.surgisharp.com/
Copyright 1996 - 2021 by Steve Bottorff