Haha. Thank you bud.

In my humble opinion there asking for trouble on those joints. Crater holes like that always lead to a failed weld.

I am. As soon as I can.

Kyle Boyd yes on fuel tanks you really do t wanna see that line. Trying taking a stainless wire brush and clean the inside and outside where your welding and then Acetine wipe, it should make penetration go a little better as well as get rid of that line.

I have a video on here on that topic if you wanna check it out. Just takes practice.

You are absolutely correct on everything, there are different levels of penetration. A lot of things can play a big factor in that as well, fit up, material prep are just a few. Most things that I personally do, do not require full penetration but a few things do. Example, anything that is gonna have vibration or has to hold flammable liquids. Such as fuel tanks, transfer tanks boats etc I always shoot for full penetration. Best wishes bro and feel free to reach out with any questions.