cabbages

But they look so easy on youtube! Fair enough, I'll take your advice on board.

Thanks

On 6/19/2018 at 4:58 PM, SLAG said:

Excessive heat burns the carbon in the iron. It becomes carbon dioxide and the steel is essentially now iron. The high heat causes the grain in that steel / now iron, to grow and become crumbly. In other words that metal is essentially trashed. 

Thanks. I'll have a go at making some tongs from rebar, then maybe I'll give the hooks another go.

Great screen name by the way.

On 6/19/2018 at 5:04 PM, Steve Sells said:

also used metals are always a crap shoot

Maybe I'll practice with it for a bit and upgrade once I'm a bit more sure of myself.

Thanks Daswulf, thats really helpful. I'll chop off the end that I heated and have another go with the rest of it.

6 minutes ago, Steve Sells said:

that is a burnt end, while good for brisket its not good for steel

Thanks for your reply.

So did it snap because I got it too hot? Do you think that the rest of the spring might still be worth using?

Hi,

On the weekend, I planned to make some hooks for bowl turning on a bowl lathe from some coil springs. I heated the  springs in a coal fire with air blowing through it from a vacuum cleaner. At first, the straightening of the spring seemed to be going well; I was hating one end, placing over a metal post in the ground, and pulling to form a straight rod. On the third heating however, I went to pull the spring out of the forge, and it came apart into two pieces. Once cooled, the broken end seemed to have a very grainy texture (see photo). I promptly gave up, as I was worried that I might have got hold of the wrong coil spring.

I would appreciate your input on this. Is this grainy texture normal, or is it a sign that the steel is not good enough to make tools with? I am also wondering why the spring came apart in the way it did? I suppose there was a chance that the spring had a preexisting weakness (it was from a used car). Finally, do you think it is worth persisting with the spring, or should I find another or fork out for some proper tool steel?

Thanks in advance,

Cabbages