Fire by hand drill

Fire by hand drill

Tuesday, 6 March 2012

Seep well.

I dug one of these the other day to illustrate the concept to some students. They seemed quite interested and were fascinated to see it refill over and over again.

1 comment:

Le Loup said...

Yes, & they are a bu**er when you are putting fence post in!!!
Keith.
http://woodsrunnersdiary.blogspot.com.au/