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Kansas 914's Avatar
 
Join Date: May 2003
Location: Durango, CO
Posts: 32
Spotweld drill bit

I am going to do a full floorpan replacement and need to know what size spotweld drill bit I need.

I did some research here and I think Blair bit is the way to go - just need to know what size I need.

TIA - Mike
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Mike Moorman
Durango, CO
mike@prosalesreps.com
Old 09-16-2003, 02:01 PM
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Join Date: Jan 2002
Location: Long Beach CA
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You are probably going to go thru more than one bit. You could order several small bits of the same size from a quality supplier like McMaster
Carr and some just a little bigger than the weld itself (which will vary in size). Drill thru the center of the weld as a pilot and then start the bigger bit. Once thru the first body part, it should separate looking much like you used a spot weld bit. Try to buy the larger bit with a flatter point profile; some are really too steep and will go thru before the parts separate. As i understand it, the spot weld bits are spendy. You can buy alot of common bits for the same $. You'll need 'em.
Old 09-16-2003, 02:58 PM
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I would not bother with that method.

Just sawsall the floor near the welds and remove the centers in 4 sections. Then grind the welds off from the bottom.

This method was quicker for me and it left nice clean metal behind without the swiss-cheese look of the spot weld bits.

The other trick I did was to brace the new floor with a wet 4x4 piece of wood on a floor jack. It kept the floor flush to the car well.

When I was done it was really really wierd being in a 914 without the oil-can popping sounds of the floor


-Rich

Last edited by Rich Hilgersom; 09-18-2003 at 10:37 AM..
Old 09-18-2003, 10:34 AM
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Rich, that sound like a plan.
Old 09-18-2003, 01:30 PM
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