Thanks for your replies, this is a very high level of Motorsport (Australian V8 Supercars) and obviously all work needs to be signed off. (I think?)

I’m definitely no expert, but I would’ve assumed they would know what they are doing? Or is this just perception?

Have you guys seen these sorts of things from people who should know better in the industry?

I would’ve thought failure is not an option at this level?

Again thanks for your replies, it’s good for my learning!

I agree, I was surprised to hear that they are required to mig certain joins on the chassis as per the rules.

Obviously whoever built this knows what they are doing, I’m just interested to know why the tack method was used as opposed to running a bead like you would on a normal roll cage.

I’m sure at this level it would’ve been tested and found this is the best way of doing it..

But I’m a bit of a nerd and always need to know the details 😂

Brad Goodman Thanks Brad! Will try it out

Thanks for your reply Brad, Definitely makes sense!

In this example here, what level of penetration would you consider this?

To my untrained eye, I would be concerned about the line down the middle, especially on aluminium as a possible place for cracks to form.

For example on a fuel tank, would you want to see no “line” and almost a replica of the outside bead on the inside?

I understand there’s more factors at play due to my skill level, just more wondering what I should be shooting for in practice to get my head around it.

The fit up on these parts was good, but granted I probably didn’t clean them perfectly due to just being quick practice - except the metal was brand new (just removed the peel coat)

Thanks again 😁