Spot weld cutting

Hey guys

Any recommendations on spot weld cutters and any advice on removing.

There are couple of things I need to do.

1 - I need to remove some rear rails from a floor section I have. I need to try and preserve the rails in good condition and also keep the floor intacted because I might need to replace some section of the floor in my R. I was going to try and grind the welds back and go from there.



2- Remove the rails of my car. I was thinking about going with something like this? Im guessing the cheaper ones dont last as long. Whats better, go cheap and use more, or get a more expensive one? Anyone have any experience using them?

What I did was start to drill the spot weld with a 5 / 6mm drill bit creating a \/ in the weld, then grind the end of another 5 or 6mm hss drill bit basically creating an end mill drill, use that to finish it off.. Worked well for the hundreds I needed to do.

^ good tip

I used a drill bit like this. Easier if you get a slightly larger diameter incase you miss the center.

https://www.google.com.au/search?q=spot+weld+drill+bit&client=ms-android-telstra-au&prmd=sivn&source=lnms&tbm=isch&sa=X&ved=0ahUKEwibsaLLu-HOAhUKopQKHYKtAUsQ_AUICCgC&biw=360&bih=511#imgrc=PfzyETothkNygM%3A

Thanks for the tips guys, Ill check them out

Picked up these ones, see how they go

Thats what i've used. Stole it out of my old bosses draw

These are good quality and readily available, come in 8 & 10mm and come in different variants depending on the power source used.

The longer ones are much better, the shorts ones I got are difficult in some instances.

Btw welcome to the forum mate