Results 1 to 6 of 6
  1. #1
    Member sproosemoose's Avatar
    Join Date
    Mar 2010
    Location
    usa~
    Posts
    54
    Thanked: 7

    Default Can the DMT8C lap and round a 1K?

    Hi,

    I know the rating is for 2K+ but I am wondering if you can round the edge of a 1K and lap it with the DMT8C, or may it rip off the diamonds?

    In particular I was thinking of using it for the Naniwa 1K. Or would this require the XC.

    Thanks

  2. #2
    zib
    zib is offline
    Hell Razor zib's Avatar
    Join Date
    Nov 2008
    Location
    Jacksonville, Fl.
    Posts
    5,348
    Thanked: 1217
    Blog Entries
    4

    Default

    If I understand you correctly, you can lapp your 1k with a D8C. The edges and corners are tricky due to the base. It makes it difficult to get a good angle, but it can be done.
    Wet sandpaper is easier....You won't hurt the diamonds, it's the hardest substance on Earth....

    With Naniwa, it's best to do any lapping under running water due to swarf build up....
    We have assumed control !

  3. The Following User Says Thank You to zib For This Useful Post:

    sproosemoose (04-04-2010)

  4. #3
    Senior Member sebell's Avatar
    Join Date
    Jun 2007
    Location
    San Francisco
    Posts
    928
    Thanked: 144

    Default

    You won't hurt the diamonds, it's the hardest substance on Earth....
    I think the real issue here is whether or not the diamonds will
    be dislodged from their nickel substrate. I've certainly used a
    D8C to lap Naniwas all the way up from 1k, but I can't say
    what effect it has had on my DMT.

    Another approach that I've heard advocated is to start with the
    120 (XX?) and get it flat. If the finish left on the stone isn't as
    smooth as you'd like, a little bit of work with the D8C will get
    it nice and smooth fairly quickly.

    - Scott

  5. #4
    Senior Member Lesslemming's Avatar
    Join Date
    Jun 2009
    Location
    Germany
    Posts
    554
    Thanked: 197

    Default

    Could someone please verfy if the surface of a DMT is really made of Nickel.
    I mean pure Nickel.
    I would guess it is made of Steel, alloyed with nickel (and very possibly chromium) for the sake of corrosion resistance and toughnes.
    But pure Nickel would seem very expensive, as it is costy.
    It is mainly used for surface coating or catalytic reactions and is being avoided nowadays as it has hazardous properties (not in alloys, of course).
    I would be very happy if someone would actually know or point me in the right direction

  6. #5
    Senior Member blabbermouth JimmyHAD's Avatar
    Join Date
    Feb 2008
    Posts
    32,564
    Thanked: 11042

    Default

    Quote Originally Posted by Lesslemming View Post
    Could someone please verfy if the surface of a DMT is really made of Nickel.
    I would be very happy if someone would actually know or point me in the right direction
    I don't know that it is 'pure' nickel. On the continuous plates the diamonds are said to be in a 'substrate' of nickel plating. If you make the mistake of lapping a norton 4k on a DMT 1200 you will see the nickel as a gray swarf on the white surface of the norton. I know because I've done it. Here is the DMT (dia-sharp) website.
    Be careful how you treat people on your way up, you may meet them again on your way back down.

  7. #6
    Senior Member
    Join Date
    Mar 2009
    Posts
    254
    Thanked: 45

    Default

    Quote Originally Posted by sproosemoose View Post
    Hi,

    I know the rating is for 2K+ but I am wondering if you can round the edge of a 1K and lap it with the DMT8C, or may it rip off the diamonds?

    In particular I was thinking of using it for the Naniwa 1K. Or would this require the XC.

    Thanks
    I have the DMT8C and lapped / rounded the Naniwa 1k with almost no effort.

  8. The Following User Says Thank You to Basset For This Useful Post:

    sproosemoose (04-04-2010)

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •