Traditional Chinese tubular bow drill for carving jade.
Fullsize image: https://diqn32j8nouaz.cloudfront.net...l_fullsize.jpg
https://diqn32j8nouaz.cloudfront.net..._bow_drill.jpg
Fullsize image: https://diqn32j8nouaz.cloudfront.net...1_fullsize.jpg
https://diqn32j8nouaz.cloudfront.net...bow_drill1.jpg
Previously:
https://www.homemadetools.net/forum/...771#post170994
https://www.homemadetools.net/forum/...859#post175355
https://www.homemadetools.net/forum/...864#post156397
https://www.homemadetools.net/forum/...654#post163073
https://www.homemadetools.net/forum/...942#post148858
