Metal type

Rhode rover · Sunday at 13:55

Hello all,
The better weather seems like it's on the way so it looks like I'm going to attempt so needed projects. My chassis needs attention and what ever repair I'm making will be done in place, meaning dissembling only as needed. Rather to make a repair than total replacement if possible.
I've watched enough videos cutting, shaping ,welding , finishing so forth and so on to make me think that I'm capable (such a fool).
My question is the metal to use. Is it Cold rolled or Hot rolled in a 3mm thickness(1/8"). Think there's a galvanized too available but working the metaI l think defeat the galvanized finish.
Let me know what you think...thanks.

lynall · Sunday at 14:49

3mm will be way to thick though easier to weld, 2mm will do the job nicely, you just want plain old 2mm steel sheet offcuts, how it ended up at 2mm does not make any difference to what you need it for, harder to cut out rust and plate the hole flush but does look 100 times better.
If you dont have any steel/workshop places near to you ebay/craigslist will do random offcuts.

tottot · Sunday at 14:57

Probably cold rolled, likely the most available. Strength wise not much in it for what you need, but cold has a smoother surface finish. 3mm is what I use for chassis.

Rhode rover · Sunday at 15:38

Not being a welder, yet, why would 3mm be easier than 2mm? Heat distortion of the thinner metal?
There's a metal store almost right in the neighborhood so obtaining what I need shouldn't be a problem.

lynall · Sunday at 15:45

Rhode rover said:
Not being a welder, yet, why would 3mm be easier than 2mm? Heat distortion of the thinner metal?
There's a metal store almost right in the neighborhood so obtaining what I need shouldn't be a problem.

The thinner the metal the harder it can be to weld, downside is the thicker it is the harder it is to form shapes.
If you do not own a welder yet do some research first.

Rhode rover · Sunday at 16:31

I actually do have a mig welder. Although it's been quite a while since I've made an attempt to use it.

lynall · Sunday at 16:44

Rhode rover said:
I actually do have a mig welder. Although it's been quite a while since I've made an attempt to use it.

Before you use it check the wire roll as it might be rusty as hell.

ER1C · Sunday at 16:50

lynall said:
Before you use it check the wire roll as it might be rusty as hell.

This is my biggest issue with rare welding

lynall · Sunday at 17:06

ER1C said:
This is my biggest issue with rare welding

I wrap my mig wire reel in an old pillow cover, then cover the whole welder with an old duvet cover.

ER1C · Sunday at 17:39

lynall said:
I wrap my mig wire reel in an old pillow cover, then cover the whole welder with an old duvet cover.

I sit mine next to the boiler now.

lynall · Sunday at 18:45

ER1C said:
I sit mine next to the boiler now.

Keep my welding rods on top of my boiler.

Freddie17 · Sunday at 19:00

lynall said:
I wrap my mig wire reel in an old pillow cover, then cover the whole welder with an old duvet cover.

I do this with mine, but have to keep moving it from the spare bed when we have people over to stay

steve2286w · Sunday at 19:42

Has anyone used Corten steel sheet for its corrosion resistance as used in the Angel of the North
Seen chassis suppliers use 3mm for HD chassis

Rhode rover · Sunday at 23:23

Thanks Lynall, the moisture and rust issue never acured to me. Before I dig it and take a look is there any other area that might have a rusty surprise waiting for me that I'll have to address it before using the welder?

lynall · Monday at 06:24

Rhode rover said:
Thanks Lynall, the moisture and rust issue never acured to me. Before I dig it and take a look is there any other area that might have a rusty surprise waiting for me that I'll have to address it before using the welder?

Pull the trigger and away you go, Parweld seem to make decent consumables and Super6 wire seems okay, though I am sure any wire will do the job just fine.
I did find the wire feed rollers on the works welder had gone rusty the other week, I did strip and clean them, but would imagine they would clean themselves during use.

kermit_rr · Monday at 08:19

steve2286w said:
Has anyone used Corten steel sheet for its corrosion resistance as used in the Angel of the North
Seen chassis suppliers use 3mm for HD chassis

That's designed to rust on the surface by design. I understand it's hard to weld.
Also what the make shipping containers from

Wimblowdriver · Monday at 09:15

Rhode rover said:
Thanks Lynall, the moisture and rust issue never acured to me. Before I dig it and take a look is there any other area that might have a rusty surprise waiting for me that I'll have to address it before using the welder?

The wire can corrode itself to the nozzle if left for a long time. Easy fix - cut the wire near the drum, unscrew the nozzle and pull the wire through. Put a new nozzle on.

Anaconda · 2025-03-11T10:13:14+0000

I used 2mm on the Defender, I guess some areas, suspension mounts may well be 3mm.

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