Has anyone had their traps powder coated after they purchased them? If so how much did it cost and was it worth it? I also would like to know how a powder coated trap hold up to trapping with salt?

Powder coating requires a very clean metal surface. My son is doing a frame off restoration of a 72 Chevy Blazer. Many of the frame parts and brackets have been powder coated. He has a large oven and a paint booth. I prep the parts by sand blasting them. The frame was powder coated in a shop. His oven is not large enough for the frame.

I wonder if scratches from handling and using traps would allow rusting. Powder coating is not scratch proof. What type of salt are your traps subjected to in New Mexico?

I did all my 160s and they turned out great. But my mistake was that I left them set so it would be easier to coat them. Well, those traps lost a little spring strength when they got coated. But not enough to really make any difference.

I also did my # 2 Dukes. They turned out just fine and I didn't lose any spring strength. But I dd leave them in the sprung position. Yes, the coating does get scratched up a bit and those spots do get a bit of rust. But it's not a big deal. But cleaning those coated traps is well worth it. And they make a product that you can apply to those scratched spots.
I have a friend that owns a major metal fabricating company, and they do thier own powder coating. And yes, you guessed it I got them done for nothing. But I think it's pretty expensive.

I would be curious to know how those springs are after they've been set awhile.
I don't know what temp those powder coating ovens are, but I'd be more than a little concerned.

Sometimes in freeze thaw we use salt to keep traps working.

They take metal up to 350 to 375 deg in an oven. I’d remove the springs and paint them. 375 deg in an oven has to do some damage to springs.