ausmini :: View topic - Drilling out spots weld

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

toymini76 wrote:

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

Doogie

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

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.

Author:	1976miniss [ Thu Jul 23, 2009 7:22 pm ]
Post subject:	Drilling out spots weld - how and what equipment?
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?

Author:	toymini76 [ Thu Jul 23, 2009 7:35 pm ]
Post subject:
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

Author:	The Ranger 89 [ Thu Jul 23, 2009 7:38 pm ]
Post subject:
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

Author:	doogie [ Thu Jul 23, 2009 8:18 pm ]
Post subject:
toymini76 wrote: 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 How many new cars have "Hardened" stell in them??? Doogie

Author:	gafmo [ Thu Jul 23, 2009 8:23 pm ]
Post subject:
in so many ways I wish I got that job at Wurth

ausmini https://www.ausmini.com/forums/

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Author:	1310/71 [ Thu Jul 23, 2009 8:24 pm ]
Post subject:
doogie wrote: toymini76 wrote: 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 How many new cars have "Hardened" stell in them??? Doogie How many cars have stell in them at all? and who the hell is doogie?

Author:	toymini76 [ Thu Jul 23, 2009 9:07 pm ]
Post subject:
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

Author:	mini maxx [ Thu Jul 23, 2009 10:06 pm ]
Post subject:
MMMMMMM STELL is aok

Author:	The Ranger 89 [ Thu Jul 23, 2009 10:10 pm ]
Post subject:
we have been warned that future cars are coming out with an alloy steel equal to tungsten in strength

Author:	michaelb [ Fri Jul 24, 2009 10:12 am ]
Post subject:
Quote: we have been warned that future cars are coming out with an alloy steel equal to tungsten in strength But will they last 50 years?

Author:	awdmoke [ Fri Jul 24, 2009 11:12 am ]
Post subject:
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.

Author:	Timbo [ Fri Jul 24, 2009 12:24 pm ]
Post subject:
awdmoke wrote: 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. Minis had that in 1959. Tim

Author:	britishvita [ Fri Jul 24, 2009 1:01 pm ]
Post subject:
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"

Author:	1976miniss [ Fri Jul 24, 2009 8:21 pm ]
Post subject:	Thanks
Thanks All for the info

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