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Knife Sharpening Information and Equipment

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  Belt Knife Sharpening.

I no longer make low speed belt sander knife sharpeners.  This page will explain alternatives including how to make your own.


field sharpenerWe 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 sharpening.

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 sharpener. 

ALTERNATIVES:

First Choice:

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/


Another Choice:
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 speed unit.


2 3 4

The 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.  See sharpeningmadeeasy.com/belt.htm to see if I have nay remaining in stock.

We recommend belts from Lee Valley Tools
Sharpening/Sanding Belts - Woodworking



A. 15µ (Micron) Silicon Carbide
These have electrostatically oriented particles (on a mylar backing) that cut quickly, but leave a near mirror finish. The belts become finer in use as the silicon carbide particles are reduced in size through fracturing. Very controllable, they are ideal for carving tools, but are equally usable on straight-edged tools like chisels. 15 micron is the equivalent of 1000x in Japanese water stones. Made in USA.

B. Blue Zirconia
Zirconia belts are a combination of aluminum oxide and zirconium oxide, extremely hard, long lasting, and very resistant to particle dulling. Designed to grind hardened steels of all kinds, including stainless, the 40x is used for major stock removal (e.g., lawn-mower blades), while the 80x and 120x are for hand tool blades.

C. Aluminum Oxide
Our aluminum oxide belts are all semi-open coat with resin-resin bond and X-weight cloth suitable for general sanding.

D. Grinding Belts
Ideal for use with hardened tool steels of all kinds, these belts are especially well suited for knife sharpening. Their bonded coating differs from the slurry coating found on most sheet or belt abrasives. Made by 3M with electrostatically oriented particles bonded to the mylar backing in a heat-set resin, the belts are durable and leave a consistent finish. Depending on the amount of shaping required before final honing, optimal performance and best value are obtained when several successively finer grades are used. The 1200x belt is suitable for final honing in most applications.
Made in USA.

E. Leather Honing
Use these lap-joint leather belts on your belt sander to hone chisels, plane blades and carving tools to a mirror finish. In 1" x 30" and 1" x 42" sizes to fit many disc/belt sanders. We recommend our blade honing compound for use with these belts.
Made in USA.

Some products are no longer available.

A. 15µ (Micron) Silicon Carbide Sharpening Belts
   
Size
1+
10+
54K98.02
1" x 30"
$4.30
$3.85
Add to cartOnline: Available
54K98.01
1" x 42"
$5.40
$4.85
Add to cartOnline: Currently out of stock, expected February 15

B. Blue Zirconia Sharpening Belts
   
Grit
Size
1+
5+
68Z230.04
40x
1" x 30"
$3.50
$3.15
Add to cartOnline: Available
68Z230.08
80x
1" x 30"
$3.50
$3.15
Add to cartOnline: Available
68Z230.12
120x
1" x 30"
$3.50
$3.15
Add to cartOnline: Available
68Z242.04
40x
1" x 42"
$4.00
$3.60
Add to cartOnline: Available
68Z242.08
80x
1" x 42"
$4.00
$3.60
Add to cartOnline: Available
68Z242.12
120x
1" x 42"
$4.00
$3.60
Add to cartOnline: Available

C. Aluminum Oxide Sanding Belts
  Technical Information 
Grit
Size
1+
10+
30+
68Z130.08
80x
1" x 30"
$2.30
$1.95
$1.70
Add to cartOnline: Available
68Z130.12
120x
1" x 30"
$2.30
$1.95
$1.70
Add to cartOnline: Available
68Z130.15
150x
1" x 30"
$2.30
$1.95
$1.70
Add to cartOnline: Available
68Z130.22
220x
1" x 30"
$2.30
$1.95
$1.70
Add to cartOnline: Available
68Z130.32
320x
1" x 30"
$2.30
$1.95
$1.70
Add to cartOnline: Available
68Z142.08
80x
1" x 42"
$3.10
$2.60
$2.30
Add to cartOnline: Available
68Z142.12
120x
1" x 42"
$3.10
$2.60
$2.30
Add to cartOnline: Available
68Z142.15
150x
1" x 42"
$3.10
$2.60
$2.30
Add to cartOnline: Available
68Z142.22
220x
1" x 42"
$3.10
$2.60
$2.30
Add to cartOnline: Available
68Z142.32
320x
1" x 42"
$3.10
$2.60
$2.30
Add to cartOnline: Available

D. Aluminum Oxide Grinding Belts
   
Grit
Size
1+
5+
05M30.30
180x
1" x 30"
$4.40
$3.95
Add to cartOnline: Available
05M30.31
320x
1" x 30"
$4.40
$3.95
Add to cartOnline: Available
05M30.32
500x
1" x 30"
$4.40
$3.95
Add to cartOnline: Available
05M30.33
1200x
1" x 30"
$4.40
$3.95
Add to cartOnline: Available
54K98.10
180x
1" x 42"
$5.00
$4.50
Add to cartOnline: Available
54K98.11
320x
1" x 42"
$5.20
$4.65
N/A
54K98.12
500x
1" x 42"
$5.20
$4.65
N/A
54K98.13
1200x
1" x 42"
$5.00
$4.50
Add to cartOnline: Currently out of stock, expected January 30

E. Leather Honing Belts
 Accessories  
Size
68Z80.01
1" x 30"
$28.90
Add to cartOnline: Available
68Z80.02
1" x 42"
$30.90
Add to cartOnline: Available
Please contact me by e-mail for more details.
e-mail

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