tag:blogger.com,1999:blog-7130233686111186744.post3526217792113023882..comments2023-04-08T16:03:06.731-07:00Comments on Permaculture Ideas: Hand ToolsPermaculture Ideashttp://www.blogger.com/profile/00537010654806460266noreply@blogger.comBlogger1125tag:blogger.com,1999:blog-7130233686111186744.post-81987127269188334682011-10-01T03:58:25.573-07:002011-10-01T03:58:25.573-07:00Mechanical machines use screw to join its parts. I...Mechanical machines use screw to join its parts. It requires the use of hand tools.plumbinghttp://www.bes.co.uknoreply@blogger.com