Cut into 9cm strips, staying in very nicely. Took a bit of force to get them in, but that clearly will pay back with long-term grip. Didn't use any tools.
AdamR said:Sorted
AdamR said:
AdamR said:Just thought I'd show all you what I've been up to today with the laser I bought off Dave
Burnt paper very easily... my Hulk Ultra 400 can't do this.
Glow lights... better seen off the camera really.
[highlight]I did also wonder why your battery was about 2mm taller than the other ICR18650's I have.[/highlight]
Other stuff I've been doing with the collection (more boring though).
daguin said:
Never thought I'd see the day, you seem to know everything else. So I'll relish that opportunity to actually teach something to one of our resident experts.
pullbangdead said:It has fine, insulated, solid-copper wires. You can easily bend them. However, if you repeatedly bend them, the copper will fatigue and break.
Does that answer the question?
Peace,
dave
Wow Dave, all this time and I finally caught you in a slip-up, haha! ;D
That wouldn't be fatigue, that would be work-hardening. Fatigue is when the weakening/breaking of a metal is from excess repetitions of elastic deformation. This is the kind of deformations that comes back, a la a spring. If you are only elastically deforming something, it goes back to the original size and shape on its own when you remove the applied force, it does not permanently deform.
Bending a copper wire changes the shape of the metal, so that's plastic deformation: the deformation stays when you remove the force. Doing this over and over does make the metal more brittle and easier to break, but due to work hardening, not fatigue.
And that's your materials science lesson of the day. [smiley=thumbsup.gif]
