Precision Ground Flat Stones, Diamond Ground Tool Room Stones

Description

Professional quality precision ground flat stones - new Norton brand aluminum oxide stones, diamond wheel ground on a precision surface grinder.
For removing minor burrs and dings from measuring instruments, freshly scraped and other precision machined surfaces.  Unlike other stone flattening methods that fracture the abrasive grains leaving sharp points at the surface,
diamond wheel grinding
cuts through
the abrasive grains to form a smooth flat surface.  Compare the before and after grinding photos.
They have no "bite" - only shearing off burrs that extend above a flat machined surface without disturbing the overall surface finish or geometry.
Top quality - each stone is meticulously ground very flat to "hinge" properly
, be as square as a clean Hermann Schmidt vise and parallel within a few tenths, as applicable.
If your work requires only 2 precision ground flat surfaces, or precision ground cylinder stones for cylindrical or tapered ID work
, please check my other listings for additional offerings.
1" x 2" x 6" no lip stones are ground flat, square and parallel on 4 faces with a diamond wheel.  Ends unfinished.  Fine/coarse grit.
1" x 2" x 6" stones with lip are ground flat, square and parallel on 4 faces with a diamond wheel.  Each stone has one lip, approx. 0.020 x 0.060 left on a long fine-grit edge (see photos) to reach under edges.  Ends unfinished.  Fine/coarse grit.
1" x 2" x 8" no lip stones are ground flat, square and parallel on 4 faces with a diamond wheel.  Ends unfinished.  Fine/coarse grit.
1" x 4" diameter round stones are ground flat on 2 faces with a diamond wheel.  Edges unfinished.  Fine/coarse grit.
5/8" x 1-3/4" x 4" no lip stones are ground flat, square and parallel on 4 faces with a diamond wheel.  Ends unfinished.
Handy, lightweight size gives a more sensitive "feel" than larger, heavier stones.
Fine/coarse grit.
5/8" x 1-3/4" x 4" stones with lip are ground flat, square and parallel on 4 faces with a diamond wheel.  Each stone has one lip, approx. 0.020 x 0.060 left on a long fine-grit edge (see photos) to reach under edges.  Ends unfinished.  Fine/coarse grit.
3/8 x 1-3/4" x 4-1/2" knife edge stones are ground flat on 2 faces and on the 29-1/2 degree relieved sharp edge (see photos) to permit reaching to the root of dovetails as narrow as 30
o
.  Thick edge
and ends unfinished.  Can be used to dress flat machined surfaces like larger precision ground flat stones but are more versatile - the slim tapered shape also fits into tight corners and under edges. Light weight for a more sensitive feel. Sold as a set of 2 stones, 1 medium and 1 fine grit.
I have sold scores of precision ground stones on eBay with 100% positive feedback. But if you are dissatisfied on receipt, I offer a 30 day money back guarantee on orders shipped to the U.S. for sets returned in unused condition.
Sold only as a pair.  You will receive one pair of stones with instructions.  Lathe saddle, surface grinder chuck, vise, parallels, magnetic hold-downs, etc. not included.
Free shipping to the U.S.
Limited international shipping available via eBay the international shipping program.  Please feel free to send me a message if you have questions or specific requirements.