[video=youtube;VOmwLxgI06c]http://www.youtube.com/watch?v=VOmwLxgI06c[/video]
A few weeks ago I made up a high tech bearing block which uses a sealed skateboard bearing embedded in a stacked leather disk. This past week I got out to the jungle and shot a video of it in action. It resulted in a personal record coal for me, about 17 seconds, so that worked out really well.
I was able to find a few meters of chainsaw pull cord at a local equipment rental repair shop. The cord is exceptionally strong and has virtually no stretch. Combined with the bearing block it really makes the bowdrill fun.
Mac
A few weeks ago I made up a high tech bearing block which uses a sealed skateboard bearing embedded in a stacked leather disk. This past week I got out to the jungle and shot a video of it in action. It resulted in a personal record coal for me, about 17 seconds, so that worked out really well.
I was able to find a few meters of chainsaw pull cord at a local equipment rental repair shop. The cord is exceptionally strong and has virtually no stretch. Combined with the bearing block it really makes the bowdrill fun.
Mac