Jump to content
I Forge Iron

Trampoline Springs?


Recommended Posts

I'm sure that a quick reference to Paw-Paw's death because of metal fume fever is enough to make anyone become afraid of working with galvanized material but galvanization is only a coating on the material. As long as you can burn the coating off SAFELY, you can work with the bare material. Light a fire in an outside fire pit and put the springs in the fire so they'll get nice and bright orange for a while. When it burns, the material will turn a nasty yellow color and put off a white "fiber-like" material, stay away from this, it's the zinc/cadmium coat. Let the fire go out and cool overnight and take the springs out. That will get the galvanic coat off. Wire-wheel them and you're good to go.

P.S;
Anything with a chrome coating is just as bad. And because chrome is put on the material by an electrical current and not just dipped like galvanized is, it's alot harder to get off the material.

Be careful, be safe, and be SMART:

-Hillbilly

Link to comment
Share on other sites

Hey Hillbilly, are those vizslas in your avatar?

If you're askeered of zinc fumes, you can strip off the zinc by soaking in an acid. Muriatic would be fast (careful about the evolved hydrogen), or you could use something weak like vinegar if you don't mind waiting.

Zinc and cadmium aren't even on the same planet, toxicity-wise. I wouldn't mess with cadmium at all. (I have a little cadmium containing silver solder, and frankly I'm very reluctant to use it even outdoors.) But I doubt you'll find cadmium on your trampoline springs. It's used in electroplating (I'm not sure to what extent), but to my knowledge galvanized steel is generally hot-dipped, not electroplated.

Link to comment
Share on other sites

The reference to Paw Paw was to get people to STOP, LOOK, and THINK! I was asked to give the toast for him at Quad-State that year.

I don't forbid folks from using galvanized metal for forging; but I sure want them to do it in a mindful way. I had a student once that I started teaching smithing and pattern welding at Pennsic one year and by the next year he had spent time in the hospital for metal fume fever and I had told the idjit about the dangers of working with galvanized and the precautions to take if he had to... (Saving money is never a good excuse when the downside is hospital time; shoot he could have bought a stable of triphammers for what his hospital stay cost!)

I'd rather scare them than toast them anyday!

Link to comment
Share on other sites

Hey Hillbilly, are those vizslas in your avatar?

If you're askeered of zinc fumes, you can strip off the zinc by soaking in an acid. Muriatic would be fast (careful about the evolved hydrogen), or you could use something weak like vinegar if you don't mind waiting.

Zinc and cadmium aren't even on the same planet, toxicity-wise. I wouldn't mess with cadmium at all. (I have a little cadmium containing silver solder, and frankly I'm very reluctant to use it even outdoors.) But I doubt you'll find cadmium on your trampoline springs. It's used in electroplating (I'm not sure to what extent), but to my knowledge galvanized steel is generally hot-dipped, not electroplated.


I also use muriatic acid before I weld and it works great. It also will take off the mill coatings on hot rolled steel.
Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

×
×
  • Create New...