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Spot Weld Cutters Preference #1310402
Sat May 11 2019 07:17 PM
Sat May 11 2019 07:17 PM
A
Apache1  Offline OP
Shop Shark
Joined: Dec 2018
Posts: 297
Whitwell, TN
OK so you have your specially ground drill bit or a spot weld cutter. I've only used the first one with fairly good success. Certainly the objective is to not intentionally drill past the top panel and try not to disturb the bottom in order to separate the panel in question. So...is one better than the other or should I say its only as good as the individual operating the drill.
Seriously, is one better than the other or is there an occasion where both should be at ones disposal?

Last edited by Apache1; Sat May 11 2019 07:18 PM.

1959 Apache 3100 Fleetside SWB Resto-Mod







Re: Spot Weld Cutters Preference [Re: Apache1] #1310404
Sat May 11 2019 07:34 PM
Sat May 11 2019 07:34 PM
MNSmith  Offline
"Hey! I sound like Darth Vader!!
Joined: Oct 2005
Posts: 2,596
So Cal
I've used different methods as of late. My cowl panel was done with an old Snap-On center pilot drill bit spot weld cutter. Didn't bother me to weld up the center 1/8" hole on the panel that was staying. Comes in different diameters. As far as I'm concerned, easier to use than the center spring loaded awl type that Mac is selling these days.

When I did the wheel wells on the Suburban, so much metal was going to be fabbed and replaced by me, that I took a disc sander, sanded the spot welds until thin, then used a spot weld splitter ( a hard steel bar with a knife edge) and sheared off the rusty pieces.

I haven't used a drill bit to separate spot welds for a long time!

Re: Spot Weld Cutters Preference [Re: Apache1] #1310407
Sat May 11 2019 07:48 PM
Sat May 11 2019 07:48 PM
A
Apache1  Offline OP
Shop Shark
Joined: Dec 2018
Posts: 297
Whitwell, TN
A spot weld splitter...I need check them out for sure. I have used a pneumatic chisel on occasions for stubborn stuff. Although it will do some damage real quick! All of my bits have been used up and trying to decide if I should buy more or opt for cutter style.


1959 Apache 3100 Fleetside SWB Resto-Mod







Re: Spot Weld Cutters Preference [Re: Apache1] #1310419
Sat May 11 2019 10:52 PM
Sat May 11 2019 10:52 PM
5
52Carl  Offline
Master Gabster
Joined: Mar 2010
Posts: 7,962
Virginia
I have used a spotweld cutter before, but it dulled before I was half way done with a couple hundred spotwelds. I had an issue with getting the center to stay in the middle of the spotweld also.
I have been using a 3/16" drill bit since giving up on the spotweld cutter. The drill bit seemed to find the center of the spotwelds by itself. The 3/16" bit is plenty big to get all of the spotweld, and was just the right size to be able to get the bottom metal red hot for TIG welding the spotwelds back in. My old spotweld cutter made a huge hole, requiring too much welding, threatening warping of the panels.

Re: Spot Weld Cutters Preference [Re: Apache1] #1310427
Sat May 11 2019 11:45 PM
Sat May 11 2019 11:45 PM
B
Bill Trotter  Offline
Shop Shark
Joined: Jan 2018
Posts: 229
Iron River Mi.
I purchased a set of Blair spot weld cutters and had great results. They are a little pricey but the do work great. Bill

Re: Spot Weld Cutters Preference [Re: Apache1] #1310434
Sun May 12 2019 12:21 AM
Sun May 12 2019 12:21 AM
A
Apache1  Offline OP
Shop Shark
Joined: Dec 2018
Posts: 297
Whitwell, TN
Where did you find Blair cutters. Maybe one can ignore the investment if the results are favorable.:>)


1959 Apache 3100 Fleetside SWB Resto-Mod







Re: Spot Weld Cutters Preference [Re: Apache1] #1310443
Sun May 12 2019 01:42 AM
Sun May 12 2019 01:42 AM
B
Bill Trotter  Offline
Shop Shark
Joined: Jan 2018
Posts: 229
Iron River Mi.
Internet..type in Blair spot weld cutter. Also called rotabroach.

Last edited by Bill Trotter; Sun May 12 2019 01:48 AM.
Re: Spot Weld Cutters Preference [Re: Apache1] #1310450
Sun May 12 2019 02:14 AM
Sun May 12 2019 02:14 AM
L
LONGBOX55  Offline
Master Gabster
Joined: May 2006
Posts: 8,490
DANVILLE IL
I like the Rotabroach as well. I have a couple os set of them in assorted sizes, including an older set that was made by Hougen, which was the original manufacturer before Blair bought them out. Any welding supply store should carry them, too, plus I know that Snap-On sells them under their Blue Point name. Classic Industries also sells them.


Bill Burmeister
Re: Spot Weld Cutters Preference [Re: Apache1] #1310475
Sun May 12 2019 11:57 AM
Sun May 12 2019 11:57 AM
A
Apache1  Offline OP
Shop Shark
Joined: Dec 2018
Posts: 297
Whitwell, TN
Thanks fellows.


1959 Apache 3100 Fleetside SWB Resto-Mod







Re: Spot Weld Cutters Preference [Re: Apache1] #1310498
Sun May 12 2019 04:48 PM
Sun May 12 2019 04:48 PM
MNSmith  Offline
"Hey! I sound like Darth Vader!!
Joined: Oct 2005
Posts: 2,596
So Cal
Snap On has gotten cheap with their stuff. The older cutters are the Blair/Rotabroach style with a centering drill bit.

Here is the older Snap On cutters and the splitters.

Attached Files
spotweldcutter.jpg (74 downloads)
spotweldsplitter.jpg (73 downloads)
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Moderated by  Fourbrads, HandyAndy 

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