DMT Diasharp Credit Card Sharpener

Q: What size is the Dia-Sharp credit card sharpener?

It measures 3-1/4" x 2" x .05" , sized like a credit card so it fits easily in a pocket or wallet. Browse more sharpening supplies .

Q: What grits are available?

It comes in Coarse (45 micron / 325 mesh), Fine (25 micron / 600 mesh), and Extra-Fine (9 micron / 1200 mesh). You can buy them individually or in a money-saving bundle (item 101-466).

Description Reviews Q&A Videos

Sharpen Dull Tools With This Handy Credit Card Sized Diamond Stone

Take your sharpening anywhere with the ready-to-go Dia-Sharp credit card sized diamond sharpener. It fits easily in your pocket or wallet and is super handy to have in the shop. We use these 'credit card' sharpeners on our router bits and saw blades and they really can bring a tired carbide edge back to life. Why do we love using DMT sharpening stones? Because they're fast, easy, and the results are excellent. A bonus is that it's not messy, you don't need oil - sharpen dry or with water. Durable construction will provide years of consistent performance and reliable service. Each sharpener comes in a convenient vinyl color-coded carry case. Measures 3-1/4" x 2" x .05".

Grit Descriptions:

Buy individually or in a money saving bundle (item 101-466)
Coarse diamond (45 micron / 325 mesh) to quickly restore a neglected edge
Fine diamond (25 micron / 600 mesh) for a razor sharp edge
Extra-Fine (9 micron / 1200 mesh) to polish and refine a razor edge

Frequently Asked Questions

What size is the Dia-Sharp credit card sharpener?

It measures 3-1/4" x 2" x .05", sized like a credit card so it fits easily in a pocket or wallet. Browse more sharpening supplies.

What grits are available?

It comes in Coarse (45 micron / 325 mesh), Fine (25 micron / 600 mesh), and Extra-Fine (9 micron / 1200 mesh). You can buy them individually or in a money-saving bundle (item 101-466).

Can I sharpen router bits with it?

Yes. Infinity uses these credit card sharpeners on router bits and saw blades, and they can bring a tired carbide edge back to life. Keep your carbide router bits sharp with one in the shop.

Do I need oil to use it?

No. There is no oil and no mess. You can sharpen dry or with water, which keeps it convenient for quick touch-ups.

Does it come with a case?

Yes. Each sharpener comes in a convenient color-coded vinyl carry case to protect the diamond surface and help you identify the grit.

What is the coarse grit best for?

The Coarse diamond (45 micron / 325 mesh) is best for quickly restoring a neglected edge before moving to a finer grit.

What is the extra-fine grit best for?

The Extra-Fine diamond (9 micron / 1200 mesh) is used to polish and refine a razor edge after coarser sharpening. Explore more diamond & water stones to complete your progression.

Is it durable enough for regular shop use?

Yes. Its durable construction provides years of consistent performance and reliable service, even with frequent use.

Is there a way to save money on multiple grits?

Yes. You can buy the sharpeners individually or together in a money-saving bundle (item 101-466). Browse other sharpening accessories too.

Who makes the credit card sharpener?

It is the DMT Dia-Sharp credit card sharpener, made by DMT, which Infinity uses in its own shop for fast, easy, excellent results.

DMT Diasharp Credit Card Sharpener