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Drilling/Filling Spot Welds

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Andy

11-22-1998 19:37:21




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Does anybody have a handy trick for drilling out spot welds in sheet metal without removing allot of material. I'm using as small of bit as possible (11/32) but this still leaves a big hole to fill in both pieces. Also any thoughts on filling the holes? This is 16 gauge material; seems like I ought to be able to buy 3/8 inch "coins" that I could tig weld back in and minimize grinding of the weld. I have will have about 30 holes to fill.

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dave

11-23-1998 04:28:38




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 Re: Drilling/Filling Spot Welds in reply to Andy, 11-22-1998 19:37:21  

: Does anybody have a handy trick for drilling out spot welds in sheet metal without removing allot of material. I'm using as small of bit as possible (11/32) but this still leaves a big hole to fill in both pieces. Also any thoughts on filling the holes? This is 16 gauge material; seems like I ought to be able to buy 3/8 inch "coins" that I could tig weld back in and minimize grinding of the weld. I have will have about 30 holes to fill.

Andy, go to your local auto store and by a "spot weld drill" , it looks like a little tiny hole saw with a mandrill in the center instead of a drill bit. A spot weld drill bit will only cut through the first panel, leaveing a small "Button" that you grind off, best bet is to buy a couple three bits, they don't hold up very well.

hope this helps

Later dave

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Andy

11-23-1998 18:37:25




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 Re: Re: Drilling/Filling Spot Welds in reply to dave, 11-23-1998 04:28:38  
: : : Does anybody have a handy trick for drilling out spot welds in sheet metal without removing allot of material. I'm using as small of bit as possible (11/32) but this still leaves a big hole to fill in both pieces. Also any thoughts on filling the holes? This is 16 gauge material; seems like I ought to be able to buy 3/8 inch "coins" that I could tig weld back in and minimize grinding of the weld. I have will have about 30 holes to fill.

: Andy,
: go to your local auto store and by a "spot weld drill" , it looks like a little tiny hole saw with a mandrill in the center instead of a drill bit.
: A spot weld drill bit will only cut through the first panel, leaveing a small "Button" that you grind off, best bet is to buy a couple three bits, they don't hold up very well.

: hope this helps

: Later dave
I tried something like this but it was too small of diameter and didn't get the whole weld. It seems John Deere used bigger welds than on cars. Any thoughts on where I could get some 16 guage plugs?

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Joe Fabregas

11-24-1998 15:55:24




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 Re: Re: Re: Drilling/Filling Spot Welds in reply to Andy, 11-23-1998 18:37:25  

: : Any thoughts on where I could get some 16 guage plugs?

I pondered the same question and was thinking about using flat washers for plugs. Easy to get in different sizes and then only a small hole to fill. Inexpensive and a lot easier than making plugs. Joe Fabregas [email protected]



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