Making a wooden ball bearing on the lathe, patterned after regular steel ball bearings. http://woodgears.ca/marbles/bearing.html Using my homemade lathe: http://woodgears.ca/lathe/ I was inspired to play around with making a wooden ball bearing after Peter Collin mae a "sit and spin" with a wood and marble ball bearing for our baby Harriet: https://www.youtube.com/watch?v=PBfvPKEkHTc