Thu May 02, 2013 2:00 pm
Thanks! Is there any other way to flatten the Shapton glass stones without their expensive flattener?
Thu May 02, 2013 2:34 pm
I actually find the Shapton flatteners overkill and lacking in general function. They are specifically not to be used for stones coarser than 500 grit, and are even more restrictive for non-Shapton stones as per Shapton's recommendation. They are ~ 320 grit - the same as a DMT XC or Atoma 400. Often you need a more aggressive lap like the Atoma 140 or DMT XXC. It is also not to be used for working on steel but just on stones.
Flatness is also limited by technique. If you don't completely lap a stone it won't be flat even if your plate is 'more flat'. I can't perceive an improvement in stone performance beyond thousandths of an inch to ten thousandths of an inch.
Fri May 03, 2013 8:10 am
ken, I am so glad you mentioned this. That flattener has been on my bucket list for a long time but is just so expensive. I'm sticking to my beloved Atoma 140
Fri May 03, 2013 9:37 am
Take the Shapton flattener off your bucket list. It's just (more) Shapton weirdness.
If you're buying a diamond plate for flattening only, do yourself a favor and get CKtG's inexpensive 140.
On the other hand, if you're purchasing a plate with the idea of flattening plus use as a coarse stone for profile and repair, go Atoma. Even though Atomas are far more expensive than the DMTs, they wear so much slower that they're a better long-term value.
I have a DMT XXC, use it for flattening only, like it and am still not recommending it.
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