And what country can preserve its liberties if their rulers are not warned from time to time that their people preserve the spirit of resistance? Let them take arms. The remedy is to set them right as to facts, pardon and pacify them. What signify a few lives lost in a century or two? The tree of liberty must be refreshed from time to time with the blood of patriots and tyrants.
Looks like friction-welding. This is how they attach the threaded-end tool joints to drillpipe tubes. One of the best ways to weld, impressive to witness.
o.k. lucy, you got some 'splainin' to do. what the heck is going on?
ReplyDeleteFriction stir welding
DeleteLooks like friction-welding. This is how they attach the threaded-end tool joints to drillpipe tubes. One of the best ways to weld, impressive to witness.
ReplyDeleteInduction welding is cool too.
ReplyDelete