I don't get it

[Col. Harrumph]

I love watching restore-this-rusted-relic videos on youtube. Couple of days ago I enjoyed this one:



So this guy wraps soft steel around a mandrel at 14:06 and calls it a day?

This is not the first time I've watched someone wrap wire around a drill bit and call it a coil spring. What I don't get: how can this work with no heat treatment? I was taught: heat to bright red, quench, heat to ~600F, let cool. Maybe it's now a spring, maybe not... depends on the steel.

School me please. I mean, I know a little about stress/strain, but not enough.

 

[doubleh]

Use music wire.

 

[chamokaneman]

Use music wire.

I was just looking at article on the Savage Shooters website that referred to replacing the pull weight spring wire with .040-.045 common piano wire. Would that be the same type of thing as you refer to?

 

[chamokaneman]

I love watching restore-this-rusted-relic videos on youtube. Couple of days ago I enjoyed this one:



So this guy wraps soft steel around a mandrel at 14:06 and calls it a day?

This is not the first time I've watched someone wrap wire around a drill bit and call it a coil spring. What I don't get: how can this work with no heat treatment? I was taught: heat to bright red, quench, heat to ~600F, let cool. Maybe it's now a spring, maybe not... depends on the steel.

School me please. I mean, I know a little about stress/strain, but not enough.

I wonder the same thing...cool video though.

 

[doubleh]

Yes, same thing, just a different name.

 

[bersaguy]

This guy did a good video on making springs. It's done as a spoof of the old "How its Made" show. Good information, he does a bunch of machining and general making videos

 

[Col. Harrumph]

Enjoyed that! But still no heat treatment info.

 

[shooter1niner]

Shop I worked at had a manual spring winder. Piano or music wire was used and wrapped around a steel mandrel. With this winder you could adjust the pitch (distance between coils) of the spring. The hardened or toughened wire comes in many diameters and needs no heat treatment.