How is Rock Art aged?

close
more_vert
Sanctuary S
Sanctuary Dec 19, 2012 18:43:57
Replying to tiompan

tiompan wrote:
Emma A wrote:
OK so how do you do it? I imagine using a spherical stone (quartz?) cupped in the hand and grinding it against the "canvas", twisting the wrist. To make a straight line, you'd use a sawing action which seems much easier and less strenuous to me!
yep , easier with a pointed stone , quartz works bt as long as the engraving stone is harder the surface geology , it takes about 10 minutes for an average cup .
What even in granite George?

T tiompan
tiompan Dec 19, 2012 18:50:54
Replying to Sanctuary

Sanctuary wrote:
tiompan wrote:
Emma A wrote:
OK so how do you do it? I imagine using a spherical stone (quartz?) cupped in the hand and grinding it against the "canvas", twisting the wrist. To make a straight line, you'd use a sawing action which seems much easier and less strenuous to me!
yep , easier with a pointed stone , quartz works bt as long as the engraving stone is harder the surface geology , it takes about 10 minutes for an average cup .
What even in granite George?
Granite would take longer but it is not used too often .It does tend have lots of natural cup like holes that could help as a start i.e. they that just get enhanced . Although granite on granite would work with nothing to enhance ,just take longer , the more complex motifs are usually avoided too .

B bladup
bladup Dec 19, 2012 18:51:02
Replying to Sanctuary

only Soft sandstone in 10 mins, that's about it, other stone would take a good bit longer than that.