If you grind to a higher grit you can ease up on the 5x. The higher you bring the the grinding up the less of a calcium-oxalate layer, and the less mineral loss= longer lasting finish. But you want top dollar for doing it this way. And if you are not flattening and have to polish out frames then don't even bother going to 1800 or 3000, 800 is plenty. 

Sent from my iPhone

On 16 May 2014, at 8:43 am, Steve Kivinski <steve@potomacstonecare.com> wrote:

Thanks all for the advice. Much appreciated! Steve

On May 15, 2014 4:46 PM, "John Freitag" <jfreitag@thestoneandtileschool.com> wrote:

The grinding time for onyx will be  about the same time for any marble. The first cut is the most important cut, you need to achieve a flat surface the time depends upon the lippage. are you removing 1/16 of an inch or are you removing 1/8 inch or less. The amount of lippage will determine the time. The first cut could take up to a minute per sq.ft. depending upon the lippage. once the floor is flat then you will only be removing prior scratches from the previous grit and the  then the time goes back to your normal time for those grits.

Don’t forget the time needed to do all the edge work, you will need to do all the edges by hand or have the work work removed and then there still will be hand work which is time consuming

 

John E Freitag

Director

The Stone & Tile School

Office 407-567-7652

Cell 407-615-0134

jfreitag@thestoneandtileschool.com

 

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www.thestoneandtileschool.com

 

 

 

From: list-manager@stoneandtilepros.simplelists.com [mailto:list-manager@stoneandtilepros.simplelists.com] On Behalf Of Steve Kivinski
Sent: Thursday, May 15, 2014 8:07 AM
To: Stone and Tile PROS Technical Support
Subject: RE: [sccpartners] onyx vanity

 

In terms of grinding time, does it take a lot longer to grind onyx than marble...I though onyx was much harder... trying to get an idea of how long it will take..thanks again,,! Steve

On Sep 20, 2012 10:02 PM, "Roger Konarski" <qm144@yahoo.com> wrote:

Very easy to polish ! I like Stone Care Central 5 inch diamonds. they do not leave scratch patterns - then 5 X

 

From: "kdasilva@marbledoctorstonecare.com" <kdasilva@marbledoctorstonecare.com>
To: Stone and Tile PROS Technical Support <sccpartners@stoneandtilepros.com>
Sent: Thursday, September 20, 2012 4:47 PM
Subject: [sccpartners] onyx vanity

 

 

To everyone,
We are doing a restoration job for an entire apartment in Manhattan and they have a onyx vanity and sink in one of the bathroom which have become dull and needs some facelift .
They were originally polished, but across time and use they have lost their
sheen. I have no experience with onyx. Does it polish like marble? Is it
hard like granite? I haven't the slightest idea. Any experience out
there polishing this stone? 

 

Kelly DaSilva

Project Manager

Installing, Repairing and Maintaining of Natural Stone and Other Man Made Solid Surfaces in Both Commercial and Residential Settings. Serving the Tristate since 1996'

CT Office :289 White ST

Danbury CT - 06810

NY Office: 244 5th Avenue,Suite 2608 New York, NY 10001 (212)726-2518

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