Question about the ancient diamond drills | |||||
Re: Over 2,000 years ago. -- Beadman | Post Reply | Edit | Forum | Where am I? |
Is there information on the size of the diamond drills used on the ancient beads??
I had one article I real said something about 0.4 mm??
Also looking at the bead hole on the white agate long bead, is the roundness or wear on the inside of the hole show use?? Or was this a treatment to prevent string breakage??
again many thanks for sharing your knowledge.
from Walter