How to prepare a new DMT 325 and what else is it good for?
After searching through several old threads, I thought I might ask for a little clarification/help. I've ordered a new DMT 325 from SRD. Past threads suggested that first one should use the shank of an old screwdriver, or a kitchen knife, or a chisel blade--another piece of steel and rub it. I wondering exactly how one should do this ( like stroke, direction, hard/soft pressure) and how to know if you've done it enough and if you've done it right. Some threads seem to suggest it has something to do with high diamonds, but the thought of dislodging diamonds on a new stone is a bit scary. I'm don't want to ruin the thing. So why/how?
On another note, besides lapping (which is why I'm getting it), can one use the 325 for any other kind of sharpening or is that a bad idea?
Thanks much in advance,
John aka oldsCool
How to prepare a new DMT 325 and what else is it good for?
I have been using DMTs for a long time now and have studied them thoroughly.
Please, for the love of all good tools, do not do anything to the DMT that involves any more pressure than you would use to set a bevel on a fine kitchen knife! In fact I would suggest using your brand new hone to sharpen a decent tool like a kitchen or pocket knife. Any irregularities it may have will be small enough that the same hone will correct any damage it caused in a few strokes.
Do not lap it with other diamond hones!
Many people make the mistake of thinking diamonds are so hard that you can really lay down the pressure and go to work. Not only is this a horrible method for sharpening, it often results in removal of the diamonds. They may be hard, but the stuff that holds em on is not as tough as superman's cape;)
DMTs are fine tools that will last a lifetime or more if used properly. I have very high respect for their offerings!
How to prepare a new DMT 325 and what else is it good for?
Quote:
Originally Posted by
mjsorkin
I'm of the opinion that you don't have to break these in at all. I have only used one new one, and it worked just as well as a used one that I tried.
So I think they are ready to use right out of the box.
I use mine for cleaning hones, and also for sharpening knives. It makes a burr on a knife very quickly, then I follow with Arkansas stones. I use the stone dry with knives.
Michael
This is true in theory, but occasionally one will have a pimple and in a few cases I've seen some with bald patches. These special (and rare) cases are why I recommend using a decent knife as a break in job.
On a decent knife, you will have predictable results...and if you get results outside your expectations, you will KNOW it and recognize why hopefully.
Pimples usually get knocked loose on a pass or two. Bald patches are basis for a call to DMT (which has fantastic customer service).