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 Post subject: Lapping/flattening
PostPosted: Thu Jan 09, 2014 10:48 pm 

Joined: Sun Sep 01, 2013 6:15 pm
Posts: 32
About 2 months ago, I bought a DMT XXC plate for lapping and flattening. I have used it but not what I would consider a lot. It appears that on one end I have worn off more coating than the other end. I don't think I am putting much pressure on it. Do any of you have ideas or suggestion on what is causing this or how to avoid it. I am using it on Shapton GS.


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 Post subject: Re: Lapping/flattening
PostPosted: Fri Jan 10, 2014 3:16 am 
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Joined: Tue Oct 23, 2012 1:14 am
Posts: 604
Location: San Ramon Ca.
Mine looks the same way and I've beat the heck out of it. Still works OK but I'll never purchase another. As long as it works for its intended purpose don't worry about it.



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 Post subject: Re: Lapping/flattening
PostPosted: Fri Jan 10, 2014 3:21 am 
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Joined: Thu Nov 22, 2012 4:17 am
Posts: 4721
Mine is the same way. I bought an Atoma a couple months ago, no more DMT's for me. I'm using the DMT for repairs until it dies completely.



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 Post subject: Re: Lapping/flattening
PostPosted: Fri Jan 10, 2014 3:28 am 
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Joined: Tue Oct 23, 2012 1:14 am
Posts: 604
Location: San Ramon Ca.
Yep. Once you experience the Atoma difference, I only have a 600 at this time, you'll never go back to the DMT.



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Pete in San Ramon
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 Post subject: Re: Lapping/flattening
PostPosted: Fri Jan 10, 2014 4:09 am 

Joined: Sun Sep 01, 2013 6:15 pm
Posts: 32
Thanks guys.


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 Post subject: Re: Lapping/flattening
PostPosted: Fri Jan 10, 2014 7:01 am 
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Joined: Wed May 16, 2012 4:42 pm
Posts: 3849
Location: USA... mostly.
The Atomas ARE all that. I have the 140, 600, & 1200, and they all perform impeccably on steel, ceramic, & stone. I just wish they made a 3µ. :x



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 Post subject: Re: Lapping/flattening
PostPosted: Fri Jan 10, 2014 5:19 pm 

Joined: Fri Aug 03, 2012 10:01 pm
Posts: 224
I've used the Atoma 140 for about a year now, used it mostly for lapping followed by stock removal. IMO, when used for lapping, I wouldn't recommend using it on anything lower than 1K grit; I've experience diamond fallout when using it on my sub 1K stones. I now use my low grit stones as self lapping against my other low grits, I.e. 150 on 400. I find that if I lap them briefly after each session it doesn't take much time plus I save the life of my expensive diamond plates.

Josh


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 Post subject: Re: Lapping/flattening
PostPosted: Fri Jan 10, 2014 6:08 pm 
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Joined: Thu Nov 22, 2012 4:17 am
Posts: 4721
I haven't had that problem.



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 Post subject: Re: Lapping/flattening
PostPosted: Fri Jan 10, 2014 6:39 pm 

Joined: Fri Aug 03, 2012 10:01 pm
Posts: 224
I've also had diamond fallout on the Atoma 1200 simply using it as a slurry stone. I'm not sure if the nubatama bamboo matrix presents more of a challenge for the diamond bonding on the atoma than other stones, but it's worth mentioning for the benefit of other readers. Obviously using plenty of water and sliding the plate off the stone verses pulling it off the stone can help, lessening the suction.


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 Post subject: Re: Lapping/flattening
PostPosted: Fri Jan 10, 2014 7:27 pm 
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Joined: Wed May 09, 2012 3:59 pm
Posts: 1738
Location: Cape Town - South Africa
Jeff B wrote:I haven't had that problem.



Yeah, AGREED!

Something is amiss somewhere......??

Atomas ROCK!!!



:)



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