>the stick old boy. Best not to rely on
What's that..... the ability to flip a page backwards and look down at it's bottom right? Care tell all of us what the proceeding Fig. 5.14 on page 149 says MM5341 is made out of, you keep touting figure 5.15 on page 150 over and over again? Travertine is the same rock that stalactites and such are made out of (precipitated calcite from groundwater in a large cave or whatever) thus the comb and colliform textures visible due to the back-lighting in fig 5.14.
Calcite is not very resistant to abrasion since it's relative hardness is 3 on Mohs scale (or for that matter its 2 good cleavages for percussion) so why is it beyond Stocks' method of boring? And please don't keep going on about sandpaper and Dremel drums...... laps, tumblers, mud saws, etc, etc, etc. all use loose abrasive to work rock.
Not sure if it's been pointed out yet but MM5341 is 46 cm tall and the top is 11.5 cm wide.
Archae Solenhofen (firstname.lastname@example.org)