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Spot weld drill advice
Posted: Wed Oct 07, 2009 6:30 pm
by djkinght
Can anyone advise me on the best size and type of spot weld drill?
I'm also discovering that spotting the spot welds is a bit hard in places, any advice on the best way to reveal them?
Posted: Wed Oct 07, 2009 6:54 pm
by timmo
I used a spot weld cutter not drill..find it alot quicker and easier
http://www.frost.co.uk/item_Detail.asp? ... &subCatID=
I'll find a pic of welds i cut out with it
Posted: Wed Oct 07, 2009 6:58 pm
by timmo
Heres the pic
Posted: Wed Oct 07, 2009 8:16 pm
by taupe
Hi
A light rub over with wet and dry reveals where the spotwelds are as when formed a slight ridge is created around the weld. No good if its very rusty but you can then usually feel the dip where the spot is as the joint is stretched by the rust between.
Posted: Wed Oct 07, 2009 10:28 pm
by les
It's helpful to drill a 1/16'' pilot hole through the first layer of metal to keep the drill centred.
Posted: Wed Oct 07, 2009 10:36 pm
by alanworland
I removed all my spot welds with a 5/16 drill which I ground almost flat, this used the depression of the spot weld to keep it on course.
Used at a moderately slow speed it worked a treat!
Posted: Thu Oct 08, 2009 2:32 am
by listerjones
Wurth do a spot weld drill bit thats a little pricey but lasts an age and is great at its job.
Thin scraper type tool is good to hunt spot welds, slide it inbetween the panels in question, gently tap along untill it hits the next spot weld.
Or if your not bothered about the panel to much, use an air chisel. job done.