Trend Double Sided Diamond Whetstones

Good Value In Long Lasting Alternatives to Conventional Waterstones.

Trend Double Sided Diamond Whetstones

Trend Double Sided Diamond Whetstones

I switched to diamond benchstones (aka whetstones) several years ago, and I have no regrets. They're manufactured to be perfectly flat, they don't wear down and dish out like waterstones, they wear very slowly, and they give excellent results.

I recently tried two different Trend double-sided diamond stones, their 3" by 8" Classic Pro Stone and the smaller credit card sized Carvers Stone. The surfaces of both stones are covered with monocrystalline diamondsThese are single un-fractured diamonds, bonded onto a thin nickel plate, which is in turn bonded to a thicker steel substrate. Unlike polycrystalline diamonds, which are comprised of clusters of fractured diamonds, these monocrystalline diamonds wear down more slowly, resulting in a longer benchstone life.

The Classic Pro Stone includes a storage case, cleaning block, and non-slip mat

The Classic Pro Stone comes with a convenient storage case, cleaning block (which looks just like an eraser) and a non-slip mat that does an excellent job of keeping the stone immobile on just about any surface.

(L) 300 grit (50 micron) side; (R) 1000 grit (15 micron) side

I found that the 300 grit side of the stone cuts very aggressively
. You'll notice that there are diagonal lines cut into the surface of the stone – they capture the swarf produced as you sharpen, The 1000 grit side has a continuous layer of diamonds. It cuts noticeably slower than the 300 grit side, but obviously produces a much smoother surface.

L to R: chisel in need of TLC; sharpened on 300 grit side; honed on 1000 grit side

The photo above, on the left, shows the back of an old chisel that I recently purchased at a garage sale. The middle photo shows the back after taking about 30 strokes on the 300 grit side of the benchstone. The photo to the right shows the condition of the back after a further 30 strokes on the 1000 grit side. The result is pretty good, but you can still see the scratch pattern produced by the 300 grit side. To reduce the scratch pattern and end up with a smoother finish would require more than the 30 strokes I made on the 1000 grit side. A final honing on a leather strop with a honing compound will give a very nice polished back. 

Clean the stone regularly for optimal performance

Trend includes a cleaning block that does a very good job of removing debris that accumulates on the surface of the stone. In the photo above I've rubbed the block across the surface of the stone 3-4 times, and you can already see the difference. A bit more aggressive rubbing really cleans the stone nicely.

Carvers stone and storage wallet

The Carvers Stone is the size of a credit card and has a continuous diamond surface – 600 grit on one side, 1000 grit on the other. The plate is 1/16" thick, so it won't flex in use. It's a convenient size to slip into a shop apron pocket, carry to a job site, or store in a kitchen drawer.

L to R: Bit in need of attention; bit cleaned with Trend Tool & Bit Cleaner; bit honed with Trend Carvers Stone

I used the Carvers Stone to hone the carbide cutters on some router bits. It's a good idea to clean any residue off the cutting edge before you begin sharpening. A cleaner, such as Trend's Tool & Bit Cleaner, quickly removes the crud. A dozen or so strokes on the stone brings your cutting edge back to life.

The Carvers Stone is ideal for a range of small tools

I've used the Carvers Stone to sharpen a range of smaller tools, including carbide insert cutters. The 600 grit side cuts pretty quickly, so I only use it when a cutting edge is quite dull; otherwise I just hone the cutting edge on the 1000 grit side.

Trend recommends lapping fluid rather than water

I've always used water on my diamond benchstones, but Trend recommends that you use a lapping fluid. The fluid they sell ($15.62 for a 3.4 oz. bottle) was developed over 30 years ago for use with diamond abrasives in the engineering industry. It's a high purity synthetic isoparaffinic hydrocarbon commonly used as a degreasing agent, for removing oil residues from metal surfaces. Removing the build-up of residue on the benchstone improves diamond performance, and unlike water it isn't likely to result in rust forming on the steel substrate. I found that you don't need to use much of the lapping fluid, a couple of drops on the stone go a long way.


Classic Pro Stone
  • Continuous monocrystalline diamond
  • Double sided: 1000 grit (15 micron) and 300 grit (50 micron)
  • 3" by 8"
  • Plate thickness 1/4"
  • Unique clearance channel on 300 grit side
  • Precision flatness substrate
  • 5 yr guarantee
  • Includes: Storage pouch, cleaning block, and non slip mat
Carvers Stone
  • Continuous monocrystalline diamond
  • Double sided: 1000 grit (15 micron) and 600 grit (25 micron)
  • Plate thickness 1/16"
  • 5 yr guarantee
  • Includes storage wallet

COMPANY:Trend Routing Technology
MODEL:Classic Pro Stone: U*DWS/CP8/FC
Carvers Stone: U*DWS/CS/FF
PRICE:Classic Pro Stone: $153.26
Carvers Stone: $40.80
SOURCE:Busy Bee Tools
Elite Tools
KMS Tools
May 2014

Carl Duguay
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