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08-24-2015, 05:08 PM #1
Are DMT stones supose to be "flat"?
I have a new DMT325 I got about 2 months ago. Assuming it's a flattening stone for all my hone stones, is it suppose to be "flat" or concave? Have I worn it down? (Using 1k, 4k,8k,12k & 16k hones)
I noticed yesterday, that the DMT is concave (low in the center) I can see light under the straight edge I'm using. Can I fix it & how? Or should I seek a replacement from the vendor? As I mentioned above, I've used it 8-10 times on my stones.
(UPDATE POST #8)
Last edited by lethalgraphix; 08-24-2015 at 11:45 PM.
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08-24-2015, 05:16 PM #2
The regular dmt stones are not supposed to be flattening stones, we just use them for that purpose
They have a "certified flat" stone that is super expensive, but I never saw the need to spend that kind of money on a flattening stone.
If it is that concave, then you probably got a lemon. I would contact them with pictures and see what they will do for you. I don't see anyway that a waterstone can wear a diamond plate...
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08-24-2015, 05:36 PM #3
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08-24-2015, 07:42 PM #4
- Join Date
- Jan 2011
- Location
- Roseville,Kali
- Posts
- 10,432
Thanked: 2027Using s dial indicator I sent back two before I got a dead flat 325
CAUTION
Dangerous within 1 Mile
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08-24-2015, 08:22 PM #5
What I did was take a Starrett pro machinist’s straight edge to the back side of the plate. My 325 wasn't flat, my 1200 wasn't either. I called dia sharp, sent them back on my dime. They sent me a new 325 and the old 1200.
They don't use a straight edge. I don't recall exactly how they come to gauge flat, but in their tolerances my old 325 was not flat, but the 1200 was. I later bought a 120, a 600 and a 8000. The 600 is dead flat with the straight edge, the others are not. Probably within their tolerances though.
So send it back and see what happens ..........Be careful how you treat people on your way up, you may meet them again on your way back down.
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08-24-2015, 09:05 PM #6
DMT must have improved over the last couple years. Mine were not flat. I contacted them and got no reply. I tried again with the same results. The Trend was also not flat.
Been a machinist most of my adult life and agree with JimmyHAD.
~RichardBe yourself; everyone else is already taken.
- Oscar Wilde
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08-24-2015, 07:42 PM #7
- Join Date
- Feb 2013
- Location
- Haida Gwaii, British Columbia, Canada
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- 14,454
Thanked: 4830.004 is awful close to flat.
It's not what you know, it's who you take fishing!