Spot weld drills

jonbills

jonbills

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What do you all use for for spot weld cutting? my past experience of 'special' drill bits has been unrewarding.
I'm going to have to do the spare wheel well, slam panel and perhaps more on my new 240.
 
If the top panel is being junked I just use a 10mm belt file. There are generally 2 types of spot weld drill bits, ones that drills it completely out but also goes slightly into the next panel or the ones that cut round the spot weld which needs grinding down afterwards.
 
moggy240 said:
If the top panel is being junked I just use a 10mm belt file. There are generally 2 types of spot weld drill bits, ones that drills it completely out but also goes slightly into the next panel or the ones that cut round the spot weld which needs grinding down afterwards.
Click to expand...
Thanks Mike - what machine do you use for your 10mm belt file? which type of drill bit is better? grinding down afterwards doesn't sound like a hardship.
 
I went trough numerous "regular" 10mm spot weld drills. I was amazed that after using up 5 cheap ones, one from HAZET lasted for the complete remaining restoration. It is still sharp up today.
 
240L31 said:
I went trough numerous "regular" 10mm spot weld drills. I was amazed that after using up 5 cheap ones, one from HAZET lasted for the complete remaining restoration. It is still sharp up today.
Click to expand...
thanks Tim,
did you use this sort:
www.ebay.co.uk

HAZET Spot Weld Cutter 1967 Also Ersatzkronen / Point Multiple Choices | eBay

Exact milling of spot welds in sheet metal processing Replaceable cutter head (right-hand thread) made of high-speed steel (oiled) Cutting depth adjustment (*) by adjusting screw No warping and tearing out of the sheet metal when welding spot milling international buyers ? Please note: Import...
www.ebay.co.uk
or like this?
www.ebay.co.uk

HAZET Hssco Spot Weld Drill Bit 1967 Multiple Choices | eBay

Spot weld drill 1967 use: Exact drilling out of spot welds Self-tapping center point regrindable High-performance high-speed steel, blued Made in Germany International Buyers - Please Note: Import duties, taxes and charges are not included in the item price or shipping charges. These charges are...
www.ebay.co.uk
 
I just used an air powered 10mm belt file but you can get electric ones. Depending on the spot welds it's sometimes handy to have both types of spot weld drill bits. The spring loaded one is good but sometimes needs a pilot hole first or centre punch mark to stop it moving about
 
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