Replies

To: SunkenCiv

The textured surfaces (readily visible on the lower objects in the photo) reveal what I expected: a "Pecking + Grinding" process at work.

For hard, granular materials like basalt, the best (at least, the fastest-working) shaping strategy is to

1) Pound or "Peck" the surface to weaken and introduce microfractures

2) Grind or Scrape away the weakened material...

3) Repeat on "high spots" as many times as necessary...

3 posted on 02/13/2018 9:34:41 AM PST by TXnMA (MSM? No, thanks -- I prefer my news from the other end of the horse...)

To: TXnMA

Thanks! Good to hear from a knapper!

4 posted on 02/13/2018 11:58:55 AM PST by SunkenCiv (www.tapatalk.com/groups/godsgravesglyphs/, forum.darwincentral.org, www.gopbriefingroom.com)

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