Spot weld cutters?

[Tyson A]

Which type of spot weld cutters work the best. I will be replacing the floor pan, trunk pan, and doing mini tubs. So I don't want to waste my time and money trying to figure which type lasts and works the best.

[Mark Smith]

the ones I have are called rotobroach from a company called blair.they worked very good. i did my whole car with them.tubs tail pan,quarter, floor held up very good.

[69keith]

I've used the Blair bits, But I think a good step bit or uni-bit works as good as any. My 2 cents, but I get the uni-bits for free...

[absintheisfun]

If you live near a Northern Tool, they sell them in two packs. I can't vouch for their greatness, as I burned them both up removing my tail panel.....but then again, I've never used one before so it could have been user error

(I noticed that the more I used it, the longer they lasted...)

[Tyson A]

No Northern Tools around so I think I'll just order a 1/2 dozen or so from Eastwood. Always better to have to many than not enough.

[atomicjoe23]

The Blair Rotobroach's have really good reviews (I haven't used them personally, but they are what I will be using when it comes time for me to cross that bridge). . .Eastwood usually carries good stuff and their customer service is top notch.

[BADVELLE]

I just bought two sizes yesterday from a local tool store. These are made by Norseman Drill and Tool and are cobalt. The guy at the store recommended because of the durability of the cobalt. I am going to try them out this week.

[FrankenChevy]

using it at low speed with some type of coolant/lubricant. WD40 or cutting fluid seemed to work well. It also helps if you center punch the middle of the spotweld to keep the bit from wobbling. I have the spring-loaded center punch and one that requires being hit by a hammer. You will also need some type of chisel or knife to separate the metal after you have drilled the spotweld. I bought the panel separator knife from Eastwood and I have an old chisel that worked for me. Anything that you use will be useless (bent and beat to pieces) for anything else after you have replaced a few panels.

[Gordz32]

I started off using the spot weld cutters, and ended up just using a drill bit. Lube those babies up otherwise you'll be replacing them left and right. Like I said, I ended up drilling them out in areas where the panel could be roset welded from behind. That way I had way less work to do. Worked out great. All in All, I hate spot welds!!:evil: good luck

[Satatic]

You know i find it easier to just cut the crap out of the panel then use something like a cutoff tool to cut apart the seams then use ain air chisel to pop spotwelds.

[68ls1wannabe]

I've gotten good results with a air chisel. just use a flat ended chisel and place between the seams. Goes through them like butter.

[MonzaRacer]

I had a tool called a Blair cutter and it had straight cutter and it was brittle and junk
I bought a Rota-Broach from Snap-On and had better luck.
My preference is to use clean synthetic oil from a clean squirt can.
If you need to clean it up it cleans much better with brake clean.
wd40 will cause moisture migration and surface rust if ithe humidity is high.
The synthetic oil is much better to keep a clean edge on the cutter and you can use a whizzer cut off tool to sharpen them but i have always started to break teeth off before they ever get too dull to cut.
But will cut with olnly 2 or 3 teeth left and I run them till they are completely broke.The replacement cutters are usually under 10 bucks so I dont worry.
Using my Dewalt 12 volt drill helps as it has a slow speed to use.I really dont like using an air hammer as it deforms and rips ,untill after I cut the spots or use a spot weld chisel after drilling and for hidden spots.
Lee

[K5Cruiser]

I bought a Rota-Broach from Snap-On and had better luck.
This is the same tool I have used. I've had very good results with it. I think it's important to actually read the included instructions, so that you use the appropriate rpm when cutting out the spot welds, depending on what size broach you are using. Do this, and you will have success.

[JoshStratton]

I have this exact one and it is awesome. I used to use an air chissel, cut-off wheels, etc but this is by far the best i have used at removing spot welds. $28 bucks delivered to my door.

http://www.eastwoodco.com/jump.jsp?itemID=1160&itemType=PRODUCT

https://static1.pt-content.com/images/noimg.gif

[atomicjoe23]

II bought a Rota-Broach from Snap-On and had better luck.

I can't find the Snap-On Rota-Broach on their website. . .