spot weld bit choice - Team Camaro Tech
Body Shop Paint & Body Forum

 4Likes
  • 1 Post By pittpens24
  • 1 Post By 350sshugger
  • 1 Post By dhutton
  • 1 Post By Checkered Past
 
LinkBack Thread Tools Display Modes
post #1 of 11 (permalink) Old Nov 22nd, 19, 03:30 AM Thread Starter
Senior Tech
Steve
 
Join Date: Oct 2009
Location: Cincinnati
Posts: 2,217
spot weld bit choice

Getting ready to start replacing my floorboard in a 69 camaro - any recommendations on a spot weld bit and other approaches to cutting it out?

69 Pace Car and 69 Hard top
srode is offline  
Sponsored Links
Advertisement
 
post #2 of 11 (permalink) Old Nov 22nd, 19, 04:25 AM
Gold Lifetime Member
Greg
 
pittpens24's Avatar
 
Join Date: Jul 2015
Location: New Jersey
Posts: 1,914
Garage
Re: spot weld bit choice

I think I did Harbor Freight for like $5 each and buy like 4 or 5. Don't waste your money on a $30 bit - they break too fast to be worth it
350sshugger likes this.

'68 Camaro with RS conversion
Moser 9" with 4:11
Martz Chassis 4-link and Front Sub-frame
Tremec T-56 Magnum 6 speed
572 BB - CM Engines
Wilwood 6 piston front and 4 piston rear disc
pittpens24 is offline  
post #3 of 11 (permalink) Old Nov 22nd, 19, 04:46 AM Thread Starter
Senior Tech
Steve
 
Join Date: Oct 2009
Location: Cincinnati
Posts: 2,217
Re: spot weld bit choice

Quote:
Originally Posted by pittpens24 View Post
I think I did Harbor Freight for like $5 each and buy like 4 or 5. Don't waste your money on a $30 bit - they break too fast to be worth it
what size? 3/8, 5/16, ....

69 Pace Car and 69 Hard top
srode is offline  
 
post #4 of 11 (permalink) Old Nov 22nd, 19, 05:12 AM
Gold Lifetime Member
Matt
 
Join Date: Apr 2013
Location: Michigan
Posts: 1,158
Re: spot weld bit choice

X2 Harbor Freight. I did my entire car with 2 bits, which was a lot of metal if you have seen my build. Keep the rpm low and use WD-40 for cooling and they will last for a lot of cuts.
yellow69RS likes this.

My Build Thread


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
350sshugger is offline  
post #5 of 11 (permalink) Old Nov 22nd, 19, 05:16 AM
Team Member
Don
 
Join Date: Jun 2006
Location: Mountain Springs, Texas
Posts: 3,655
Re: spot weld bit choice

I grind them down with a cutoff wheel or air file and then hit them with a spot weld buster. Life is too short to drill out spot welds.

Don
Luwi67 likes this.

1969 Camaro LSA 6L90E AME subframe and IRS
1969 Camaro vert LS3 4L65E Ridetech level 2 - sold
1959 El Camino project
1969 Mustang Sportsroof project
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

1956 Cameo project - C5 drivetrain
1957 Buick Caballero project
dhutton is offline  
post #6 of 11 (permalink) Old Nov 22nd, 19, 05:40 AM
Gold Lifetime Member
Greg
 
pittpens24's Avatar
 
Join Date: Jul 2015
Location: New Jersey
Posts: 1,914
Garage
Re: spot weld bit choice

Quote:
Originally Posted by dhutton View Post
I grind them down with a cutoff wheel or air file and then hit them with a spot weld buster. Life is too short to drill out spot welds.

Don
Now that I have 4 years under my belt cutting and grinding I can see that as a timesaver, BUT in the beginning when I never picked up a cut-off wheel, I could just imagine the quick damage I could have done to that inner rocker LOL.

Seriously though - I did cut my floor out with a plasma cutter 1st so I could work like a human instead of having the drill chuck rub on the floor when drilling out. Just be mindful of your cuts!

'68 Camaro with RS conversion
Moser 9" with 4:11
Martz Chassis 4-link and Front Sub-frame
Tremec T-56 Magnum 6 speed
572 BB - CM Engines
Wilwood 6 piston front and 4 piston rear disc
pittpens24 is offline  
post #7 of 11 (permalink) Old Nov 22nd, 19, 07:02 AM
Gold Lifetime Member
keith
 
X-77 keith's Avatar
 
Join Date: Nov 2011
Location: America
Posts: 3,020
I agree with Don. I use to drill out the welds, but grinding is faster, and leaves a area with no holes for you to weld to. No brainier to me.

X-77 keith
1969 x-77 Z/28 orange/ white stripes, named by my daughter "Clementine ", M-22 close ratio, 4:10 12 bolt, CE 302. Hugger orange with white stripes. White standard interior. Restoration complete May 2018
X-77 keith is offline  
post #8 of 11 (permalink) Old Nov 22nd, 19, 07:09 AM
Team Member
Darin
 
ilikeike's Avatar
 
Join Date: Jun 2013
Location: Stanislaus Co. Ca.
Posts: 1,445
Re: spot weld bit choice

I use Blair when needed. Good brick and mortar local welding stores carry them
or Amazon. You can find lesser bits that do the job though.

https://www.blairequipment.com/spotweld-cutters

When I just did my mini tub job, I mostly just used a drill bit, grinder, chisel and hammer.
It's nice to have a good spot cutter if needed though.

1968 Butternut Coupe,
421" Dart SHP block
TKO 600 RR
Dutchman 9" w/3.70 US Gear Lightning r&p
Speedtech torque arm,Ridetech HQ coilovers
Global West arms
Budnik wheels

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
ilikeike is offline  
post #9 of 11 (permalink) Old Nov 22nd, 19, 08:21 AM
Gold Lifetime Member
Darrell
 
Join Date: Nov 2013
Location: Cen. Cal.
Posts: 106
Re: spot weld bit choice

I used the HF spot weld cutters after using a plasma cutter to get rid of the mass of the floor. Then I ground off the nugget that was left until it was smooth with the surface. The trick is to just cut thru enough to release the floor metal and not to go though the base metal. Patience is your friend.
yellow69RS likes this.

My build thread
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
Checkered Past is offline  
post #10 of 11 (permalink) Old Nov 22nd, 19, 08:26 AM
Senior Tech
 
Join Date: Nov 2018
Posts: 989
Re: spot weld bit choice

I bought a cheap set of spot weld bits from Amazon. For sheet metal they would work OK but the thick metal of my shifter detent they died quickly killing 1 bit per spot weld. I also have used the HF ones which are about the same quality. Both work OK on sheet metal but thicker stuff....they are short lived.

The surrounding metal is no problem...the weld itself is considerably harder

Like any tool, quality has a price so you typically get what you pay for. YMMV
SoCal805 is offline  
post #11 of 11 (permalink) Old Nov 25th, 19, 04:39 AM
Gold Lifetime Member
Greg
 
pittpens24's Avatar
 
Join Date: Jul 2015
Location: New Jersey
Posts: 1,914
Garage
Re: spot weld bit choice

Quote:
Originally Posted by srode View Post
what size? 3/8, 5/16, ....
You know what they say - Bigger is always better lol

'68 Camaro with RS conversion
Moser 9" with 4:11
Martz Chassis 4-link and Front Sub-frame
Tremec T-56 Magnum 6 speed
572 BB - CM Engines
Wilwood 6 piston front and 4 piston rear disc
pittpens24 is offline  
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Team Camaro Tech forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address.
NOTE we receive a lot of registrations with bad email addresses. IF you do not receive your confirmation email you will not be able to post. contact support and we will try and help.
Be sure you enter a valid email address and check your spam folder as well.



Email Address:
OR

Log-in










Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome