Stone Carving: Q&A + Gallery... - Tiki Carving

T Tamapoutini Member Aotearoa (New Zealand) Joined: Aug 30, 2006 Posts: 1530	T Tamapoutini Posted posted on Fri, Jun 22, 2007 1:46 AM On 2007-06-18 21:53, pdrake wrote: when one is grinding pounamua is it normal for the sharp edges to flake off? does this mean the piece of jade is poor quality? yes, it is a high speed grind. should i do it slower? Sorry pdrake, I missed this. A: Maybe to both. It could be that the flaws were inherant in the stone itself. By the way you say 'flake off', it sounds as though this could be the case. As long as a wheel is running true and has adequate water cooling the working face it shouldnt really matter what speed you are running at. But in reality there may be a microscopic wobble to your wheel and running at very high speed may be causing small vibrations to shatter the stone..? If you are able to alter your running speed then by all means give it a go. Hope this helps. TTT :)

On 2007-06-18 21:53, pdrake wrote:
when one is grinding pounamua is it normal for the sharp edges to flake off? does this mean the piece of jade is poor quality? yes, it is a high speed grind. should i do it slower?

Sorry pdrake, I missed this.

A: Maybe to both. It could be that the flaws were inherant in the stone itself. By the way you say 'flake off', it sounds as though this could be the case. As long as a wheel is running true and has adequate water cooling the working face it shouldnt really matter what speed you are running at. But in reality there may be a microscopic wobble to your wheel and running at very high speed may be causing small vibrations to shatter the stone..?

If you are able to alter your running speed then by all means give it a go. Hope this helps.

TTT :)

Post #314248 by Tamapoutini on Fri, Jun 22, 2007 1:46 AM