Spot weld drill bits?

[michael welch]

If you look at the rear liftgate hinges they notch the leaf opposite the bolt head. If there's room how about nutserts? Hardware store supplies what I need,when installed they are almost flat. Or on my rig I welded the windshield frame in solid. Doors do fit nice.

 

[BroncoJAK]

I've made my living for the past 15 yrs as a body man. What you need is Roto-broach brand spot weld cutters. They come in all sizes, 3/8 being the most commonly used. You can find them at a auto body supply store, or on any pro tool truck.
Start by drilling a dimple in the center of the weld with an 1/8 drill bit to keep the cutter centered in the weld. After cutting the welds use a heavy putty knife/panel seperator to seperate the panels. Spot weld cutters work best at slower speeds. After you've cut a few you can tell how well it cuts just by touch.

 

[brutis72eb]

I just bought one and it was $10! And it didnt even go through 1 spot weld and the teeth were ground ALL THE WAY DOWN! I called them and they said that they couldnt give me a refund. I was pretty mad. I guess I need to go a little slower and use lubricant. I will be going to hf for that nice set!

 

[Blue71]

brutis,

Did you drill a small 1/8 hole in the middle of the spot weld first? I broke a few teeth off before I figured it out. Afterdrilling the hole I went through about 60 spot welds before braking mine. Hope that helps.

Blue71

 

[Madgyver]

I used something like this after my others broke or lost some tooth. It's sold at Sears as Bullet point by Black and Decker.

Bullet Pilot Point

With their central point and two spurs, Bullet drills resemble spur point bits, but can be used in metal, wood and plastics. Unlike normal twist drills, the twisted flutes are ground away; making a truer, more accurate bit than normal twist bits. They cut a clean hole and cause little damage when they break through the back of the workpiece.

Bit sizes range from 1.5 to 13 mm.

 

[Madgyver]

Dewalt has them too....

 

[civilgee]

is this the best way to remove a floor pan. Drill out all the spot welds then get at it with a saw-zall (sp?) or grinder?

 

[HotWheels]

Now I'm hankering for a set of them Dewalt drill bits....Sandra will want to speak to your wife Mad.....$$$

 

[brutis72eb]

Yeah, I drilled a small pilot hole before I used the bit. I went to Lowes and a set of those DeWalts were $25! Do they work just as well as the spot weld drill bits? Do they work the same?

 

[BroncoJAK]

I just bought one and it was $10! And it didnt even go through 1 spot weld and the teeth were ground ALL THE WAY DOWN! I called them and they said that they couldnt give me a refund. I was pretty mad. I guess I need to go a little slower and use lubricant. I will be going to hf for that nice set!

I'm referring to the 11000 series rotobroach. You will cut alot of welds before it begins to dull and you'll pay alot more than $10 for it.

 

[Mikey]

OK, everyone,
What was the final consensus on which spot weld cutter to go for. How about this one?
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&category=25260&item=3869512815&rd=1
I need to do the floor pans this spring.
Thanks,
Mikey

 

[Mark]

OK, everyone,
What was the final consensus on which spot weld cutter to go for. How about this one? http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&category=25260&item=3869512815&rd=1 I need to do the floor pans this spring.Thanks,Mikey

Consensus? I don't know about consensus but I've had nothing but excellent results with the Eastwood product pictured on the very 1st post to this thread.

 

[Buckin74]

These spot weld bits are the only way to go --- works great for windshield frames