Diafold Double-Sided Sharpeners

Convenient folding pocket sharpeners great for use in the workshop, around the home, camping, or at the cottage.

Diafold Double-Sided Sharpeners

Diafold Double-Sided Sharpeners



If you've been woodworking for any length of time you've likely heard of DMT - one of the worlds major manufacturers of diamond sharpening products. Their interrupted surface DuoSharp and continuous surface Dia-Sharp benchstone are probably the most popular diamond benchstones on the market. They also make a range of folding and pocket sharpeners that are ideal for all kinds of knives, as well as gardening tools, router bits, and small edged tools. Plus, all DMT products are made in the USA.

016
Updated Diafold (L); older style Diafold (R)
 
Recently DMT upgraded their Diafold Double-Sided Sharpeners, replacing the opaque handles with transparent handles, and changing the product packaging, which uses 93-percent less plastic. It's great to see manufacturing companies doing their part to reduce the amount of crap that goes into our landfill site. DMT's Diafold line also includes other sharpeners besides the Double-Sided models - these include Single-Sided, Serrated, Flat File and Chain Saw - and they each have different features and/or prices. 
 
What I like about DMT's diamond sharpeners is that they cut very quickly, using water as a lubricant. As well, they're extremely flat and will remain so throughout their life span. DMT uses industrial quality monocrystalline diamonds on all its sharpeners - these are single un-fractured diamonds, bonded onto the substrate plate. They wear down more slowly than polycrystalline diamonds, which are, in fact, clusters of fractured diamonds. DMT also uses diamonds that are consistent in grit size, and they ensure that the  diamonds cover the plate uniformly, so you get consistent even contact with the surface being sharpened. What all of this means to the user is a longer sharpener life span. Who wouldn't want that?

001
Top to bottom: Extra Coarse, Coarse, Fine, Extra Fine
 
If you've used an interrupted surface sharpener before you'll know that the small circular recesses serve to capture the swarf produced when sharpening and keep it off the plate. In order for the diamonds to work more effectively it's a good idea to regularly rinse the swarf off the plate - I use a spray misting bottle.

003
Folds for plate protection, storage, and transportation
 
DMT's Double-Sided Diafold Sharpeners consist of a two-sided sharpening plate, with a folding handle that serves as the storage case. At only 7/16" thick and roughly 1" wide and 5" long (closed), they fit easily into a pocket or shop apron, or unobtrusively in a backpack or tool box. The handles are made of 1/16" thick plastic - they're not so stiff that they'll easily crack or shatter if dropped. When opened, the sharpeners measure 9-7/16". The sharpening plate is roughly 7/8" by 4-3/8".
 
DMT's Double-Sided Diafold Sharpeners are available in four different grit combinations:
 
  • FWCX - Coarse/Extra Coarse
  • FWFC - FIne/Coarse
  • FWEF - Extra-Fine/Fine
  • FWEEE - Extra Extra-Fine/Extra-Fine
I tried the FWCX (Coarse/Extra Coarse) and FWEF (Extra-Fine/Fine) models. The Extra Coarse side on the FWCX model, rated at 60 micron, cuts very aggressively. You can reshape the cutting edge on a knife in half a dozen strokes. I found it does a super job on a dull ax or spade. Of course it leaves a pronounced scratch pattern. The Coarse side (45 micron) seems to cut about half the speed of the Extra Coarse, but still removes material at a decent rate. It's the side I use to resharpen a dull shop or belt knife. I then follow this up with the Fine side (25 micron) on the FWEF. It gives a smoother finish with a much finer scratch pattern. The Extra Fine side (9 micron) gives a fairly polished looking edge, not razor sharp, but just as good as most original factory finishes. What I like to use the Extra Fine side for is touching up dull router bits, the cutter on my marking gauge, blades for my beading tool, and the HSS insert tips for my Turnmaster.
 
I've had my original FWEF for five or six years, and it still has a lot of life left on it. These are convenient sharpeners that you'll find handy to have around the workshop, the home, camping, or at the cottage.
 
KEY FEATURES
 
  • 4 grit combinations to choose from 
  • Double-sided
  • Monocrystalline diamond surface
  • Water lubrication
  • 7/16" x 1-1/8" x 5" (closed)
  • 9-7/16" (opened)
 
COMPANY:DMT
MODEL: See chart above
PRICE:$43.11
MADE IN:USA
SOURCE: Dealer List
Online
 
Author: 
Carl Duguay
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