Hi all, we need to drill out spot welds so we can remove panels, what is the name of the drill piece that is the best tool for the job? and where would we purchase one from?
Any other tips when dealing with spot weld removal?

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It's not the size of the dog in the fight, but the size of the fight in the dog!!

1976 Mini SS
1971 Mini Ute (Custom) - really hubby's but I will claim half
1976 Mini SS Shell
Oh and an 850 shell waiting for our dear son to start his resto!

At work we use wurth spot weld drill bits. They are strong and last well in normal steel car panels but not so well in new cars with hardened steel in them.
You must use a slow revving drill and best to also use a cutting oil as well.
Only go through the outer panel( if you can stop in time)
Is fairly easy once you get used to it just take your time.
Phil

as far i know they are called spot weld drill bits
you can get them through "Wurth"
you may requre a chizel with the edge on the side. insded of the tip
like a knife you slide it along inbetween the panels to help break the join you hit the side with a hammer to split the join

that is what we do at my panel beating shop

or you can weld straight through them and weld up the hole later

a tip is to screw the panels together withself tapping screws as you cant get a clamp everywere and weld up the holes later

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1969 Blue Mini K, 1330cc, Weber 45, polished aluminum roll cage, Race seats, 4 point harness, full rewire incorporating 8 fuses, 6 relays and new headlights just needs tyres front shocks and a windscreen til re-register

How many new cars have "Hardened" stell in them???


Doogie

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I won Hay once, here's the pic to prove it..


Hay, it's not about the car, it's not about the venue, it's about the people that come here. Peter Dwyer, Mayor of Hay NSW.

in so many ways I wish I got that job at Wurth

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Stop Licking the Dog...I Don't Care Who Started It

How many cars have stell in them at all?
and who the hell is doogie?

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All new cars now have hardened steel and it really sucks to repair them if they are bent in these areas . Mostly in the rails, pillars and inner sill panels to help protect the occupants in an accident.
There are many different grades of hardened steel too. Most older spot welders are now no good to repair these new cars.
Makes me wonder WHY I became a panel beater sometimes but hopefully in the next year I'll just be restoring older cars like THE MIGHTY MINI. LOL. Just now starting to restore a 1908 reo car. It's mostly timber so will be a bit different than what I'm used to working on.
Phil

MMMMMMM STELL is aok

we have been warned that future cars are coming out with an alloy steel equal to tungsten in strength

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1969 Blue Mini K, 1330cc, Weber 45, polished aluminum roll cage, Race seats, 4 point harness, full rewire incorporating 8 fuses, 6 relays and new headlights just needs tyres front shocks and a windscreen til re-register

But will they last 50 years?

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1969 Cooper "S"
1967 Mini Deluxe
1973 Clubman Van (the fleet spare)
1978 ex 1275 LS ("Wizard" Eaton Supercharged)
2015 HSV GenF GTS(occasional drive & tow car)
2019 MINI F55 Cooper S

Yes, if you don't crash them!

Some new cars also have foam filled pillars and sills for extra strength.
Now that would be a right bastard to work on.

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Too many cars, and too little time.

Minis had that in 1959.

Tim

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1951 Morris Commercial J Type Van
1955 BSA C11G
1961 Morris Mini Traveller
1969 Triumph TR6R
1977 Leyland Moke Californian

sutton also make a spot weld cutter drill bit - i got mine from gasweld.

Make sure you use a punch to put an indent into the middle of the spot weld to give the drill bit something to locate in otherwise they can go "walk about"

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Thanks All for the info

_________________
It's not the size of the dog in the fight, but the size of the fight in the dog!!

1976 Mini SS
1971 Mini Ute (Custom) - really hubby's but I will claim half
1976 Mini SS Shell
Oh and an 850 shell waiting for our dear son to start his resto!