Drilling out spot welds
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Drilling out spot welds
Anyone got some tips on doing this on the usual car bodywork? Like best type of (electric) drill to us, etc. And is there anything better that the common spot weld cutter?
It's one those jobs I find a real chore and wondered if the pros have a better method.
It's one those jobs I find a real chore and wondered if the pros have a better method.
Dave
London SW
Rover SD1 VDP EFI
MegaSquirt2 V3
EDIS8
Tech Edge 2Y
London SW
Rover SD1 VDP EFI
MegaSquirt2 V3
EDIS8
Tech Edge 2Y
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There are specific drill bits you can buy.
But really cant think of any easy or quick way. Spot welds are a pain in the hole !
A good quality drill bit is probably quite decent.
Grinder is useless
Flap wheel in grinder great at removing metal...just no way to target it and it creates a lot of heat
Die grinder/carbide...sort of ok, but bloody messy and noisy.
Plasma....
Or in the video, some better spot weld drills than normally see for sale here.
That "spot weld" cutter is actually a great holesaw where you dont want a lot of swarf on the inside and a neat hole.
But really cant think of any easy or quick way. Spot welds are a pain in the hole !
A good quality drill bit is probably quite decent.
Grinder is useless
Flap wheel in grinder great at removing metal...just no way to target it and it creates a lot of heat
Die grinder/carbide...sort of ok, but bloody messy and noisy.
Plasma....
Or in the video, some better spot weld drills than normally see for sale here.
That "spot weld" cutter is actually a great holesaw where you dont want a lot of swarf on the inside and a neat hole.
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- Top Dog
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- Joined: Mon May 04, 2009 6:53 am
What about these little cutters? I haven't seen them used for spot welds before, but they should do the job perfectly well....
http://www.rotabroach.co.uk/cutters/mini-cutters
http://www.rotabroach.co.uk/cutters/mini-cutters
Cheers,
John
John
I've not tried them, but guess they'd not be easy to use with hand held drill.unstable load wrote:What about these little cutters? I haven't seen them used for spot welds before, but they should do the job perfectly well....
http://www.rotabroach.co.uk/cutters/mini-cutters
You generally need a central 'drill' of some sort to keep it from wandering.
Dave
London SW
Rover SD1 VDP EFI
MegaSquirt2 V3
EDIS8
Tech Edge 2Y
London SW
Rover SD1 VDP EFI
MegaSquirt2 V3
EDIS8
Tech Edge 2Y
-
- Forum Contributor
- Posts: 3979
- Joined: Sat Nov 18, 2006 6:22 pm
- Location: Northern Ireland
Ive used the rotabroach for drilling holes before, they do work well.
The one I used needed a pilot hole though, so it isnt quite like the spot weld drill in the video. The point on the rotabroach is solid, not sprung loaded
Also the one I used, same as pictured above would be nowhere near as strong as that Eastwood spot weld set in the video.
The one I used needed a pilot hole though, so it isnt quite like the spot weld drill in the video. The point on the rotabroach is solid, not sprung loaded
Also the one I used, same as pictured above would be nowhere near as strong as that Eastwood spot weld set in the video.
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- Top Dog
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I use the normal 5mm spot weld drills and if they've gone walkabout, a normal drillbit ground with a really shallow point, and carefully go in. Biggest problem I have is finding the true centre of the spotweld to only require minimal prying to break the remaining weld.
Drill of choice is a Bosch powerdrill, just because it's mine!
Drill of choice is a Bosch powerdrill, just because it's mine!
1972 Rover 2000TC M16 turbo
1975 Land Rover OM606 diesel
1984 Rover SD1 3500 Megasquirt powered
1975 Land Rover OM606 diesel
1984 Rover SD1 3500 Megasquirt powered