HOW TO: Do Panel Bond Repairs with Welding

HOW TO: Repair Panels following the 3M Panel Bond Standard Operating Procedure

HOW TO: Do Panel Bond Repairs with Welding

Рет қаралды 48,962

4 жыл бұрын

Shawn Collins, 3M Senior Technical Services Engineer, shows tips and tricks for weld bonding.
Step 1: Remove seam sealer (01:09)
Clean off the area to see the welds. Remove all the seam sealer in the area that will remain on the vehicle. For the rest, remove just enough to see the welds. I like the Scotch-Brite™ belt - it highlights the welds so you can see exactly where they are.
Step 2: Tape the section (03:37)
I’ve removed the welds except the ones in the area I’m going to section. Mark the sectioning area with tape. If you’re sectioning to a manufacture’s procedure, follow their directions. Then identify the marks in the same area on the replacement panel.
Pro tip (04:38): Add some markings to help you keep track of what’s replacing what. For example, I write “scrap” on the areas being replaced and “save” on the areas I’m keeping.
Step 3: Cut as far as you can with cutoff wheel (05:14)
You can only cut so far before you start cutting the bottom flange - and the key to this repair is to not damage the bottom flange on the host panel. So cut as far as you can, and then we’ve developed a technique using the file belt tool called a plunge cut.
Step 4: Finish with a plunge cut (06:30)
You’ll cut from two different angles and grind the material down to finish the cut started by the cutting wheel.
Pro tips (09:35): Slip a metal plate underneath so you don’t grind the bottom plate (the host panel). Also, cut just a hair larger and little bit longer, then grind it back when you make your final fit for the sectioning joint.
Step 5: Clean it up to prep for adhesive (11:53)
Remove all the seam sealer and the weld nuggets for a nice flat surface. And cut the replacement panel so it’s ready to go. Finally, touch up the sectioning line for a good fit.
Step 6: Prep for welding (15:06)
Choose which side you’re going to MAG weld on and mark it up. Mark the other side for squeeze-type resistance spot welding. Then clean the surfaces for welding and punch some holes for your plug welds.
Step 7: Double check your cleaning and mark your welds (18:12)
Don’t miss any spots because it will contaminate the welds. If the manufacturer recommends epoxy primer, go ahead. Mark where your welds go. A lot of OEMs have very specific information for squeeze-type welding, so always check them.
Step 8: Apply 3M™ Weld-Thru II coating primer (24:10)
It’s important to agitate the Weld-Thru primer very well before spraying. Apply only to the MAG welding side, not anywhere you’re using adhesive. Apply two coats.
Pro tip (24:29): Store Weld-Thru upside down or on its side so the zinc powder doesn’t settle to the bottom.
Step 9: Clean the plug weld holes (26:10)
The easiest way to do this is to apply the Weld-Thru primer after your holes are punched, then test fit the part. While it’s on for the test fit, mark the holes, then hit those spots with a file belt sander.
Step 10: Prepare replacement side for adhesive (28:00)
Clean the surface with a VOC-compliant cleaner.
Step 11: Apply the adhesive (28:58)
Equalize the cartridge into a paper towel and extrude a couple inches onto a mixing board or back into the paper towel. Make sure you have an adequate mix. Three applications: one on the host part, one on the replacement part, then a third squeeze-out bead.
Step 12: Clamp the parts (32:40)
You can use many different types of clamps, but clamp tightly. It’s virtually impossible to overclamp.
Step 13: Look at OEM procedures (34:14)
Now that you’re clamped up and ready to weld, see if the OEM has any special recommendations.
Step 14: Finish the repair (36:25)
Complete the repair process, finishing up with 3M™ Cavity Wax Plus 08852.
Important note:
There are of course many factors and variables that can affect an individual repair, so the technician and repair facility need to evaluate each specific application and repair process, including relevant vehicle, part and OEM guidelines, and determine what is appropriate for that repair.
Products used in this video:
3M™ File Belt Sanders for Body Repair
www.3m.com/3M/en_US/company-u...
Scotch-Brite™ Durable Flex Belt
www.3m.com/3M/en_US/company-u...
3M™ Weld-Thru II 05917
www.3m.com/3M/en_US/company-u...
For more advanced tutorials, check out 3M Collision Repair Academy
www.3m.com/3M/en_US/collision...
You’ll find courses that will expand your knowledge, deliver practical procedures that you can use right away, and, in many cases, earn you I-CAR credits.
Website: 3MCollision.com
Instagram: 3MCollision
Facebook: 3MCollision

Пікірлер: 35

@wsmusgrave1 4 ай бұрын

Great comprehensive video & excellent presenter !

@LeBoeufCody 3 жыл бұрын

Thank you so much for providing such a thorough, well executed and very informative educational demonstration. After watching this video in conjunction with the weld thru "primer" video, I have absolutely no questions left unanswered. Thank you Shawn for providing such a comprehensive demonstration! I am doing a small DIY repair to non structural components this week. Although I wish I had 3M branded tools and materials to complete the job, I am still able to apply your Pro tips and techniques with the materials I have to work with. After weeks of searching the internet for articles and videos, I have finally found answers to all the questions that keep coming to mind as I have progressed through this repair. Shawn, you have really earned my respect and I am blessed to have come across these videos. It I could afford to repurchase all new materials for my project or had come across these demonstrations sooner, I would definitely go with your recommendations in this video. I wish there was some way for me to help share your knowledge and hopefully save others like me from being lead in so many different directions. Although I can not personally vouch for the quality of the 3M products used, since I have not had the opportunity to use them, I can still confidently recommend anyone to come check out these incredible videos. Thanks again Shawn and 3M!

@TerryPullen 3 жыл бұрын

Taken from, www.twi-global.com/ - MAG stands for Metal Active Gas. Active gas mixtures have been developed primarily for welding steels. Typical shielding gases are mixtures of argon, carbon dioxide and oxygen e.g. CO2 , Ar + 2 to 5% O2 , Ar + 5 to 25% CO2 and Ar + 10% CO2 + 5% O 2 . - MIG stands for Metal Inert Gas. Only inert gases or gas mixtures are used for the shielding gas when MIG welding. Typical inert gases used for MIG welding are argon and helium. These gases are usually used for MIG welding of aluminium and other non-ferrous metals.

@deankay4434 2 жыл бұрын

@Terry Pullen - Buddy, I want to give you a virtual internet based handshake for clearing up. I am not sure if the guys/gals/questioning at my weld supplier would be able to give me a quality paragraph of explanation as you did in comments. After decades of diagnosing the root cause of someone’s complaint, if asked a question I did not know, I said so! It’s kinda like the old saying; “If you can’t dazzle them with diamonds, then baffle them with BS.” I admit, after owning a new 150 Amp MIG in 1984, I have used straight CO2, but used 25%co2 / 75% Argon, all for general purpose mild steel welding. I don’t know if it would be cheaper after retirement to go back to straight co2 or stay with what I have. Too many back surgeries have slowed me down but family, friends and me still fabricate non-structural parts from mild steel. I have a MIG from Italy which according to the website has been manufacturing welders since 1913 and was trying hard to get market share. Besides most of Europe has 220 at the wall socket! Lol. Thanks, I wanted to give a shout out to anyone who makes the complex understandable and interesting. In my eyes after teaching auto tech on the road for one of the big 3, that rhymes with M&M, I enjoy learning, regardless. I hope 2022 finds you well and is good to you! ASE master tech since 1978, retired.

@user-pk3ef7do6q 2 жыл бұрын

Don't know why I am looking at this, but it is so cool

@johnstoyak 3 ай бұрын

There's those who teach and those who can do!

@AntonioMartinez-qj7is 3 жыл бұрын

Excellent teacher. Just subscribe!!!

@donnareed3822 3 жыл бұрын

Hi. Very interesting video but I hate when the music is louder than your voice. I have to keep turning you up and down.

@donmoore7785 4 ай бұрын

I simply stopped watching.

@hardyda4 11 ай бұрын

What’s the adhesive used for squeeze spot welding ?

@th3drizzl378 2 жыл бұрын

okay so what is that tool called he used in the beginning? i NEED one of those.

@Comeriokid Жыл бұрын

Can the person editing this stop the annoying loud rock music. I feel like a millennial who needs to be constantly entertained. Let the man teach.

@bigfellasydney6970 Жыл бұрын

Thank you for the upload- could you please clarify- was the seam sealer cured or still wet, when you spot welded?

@maxdamage8562 3 ай бұрын

It was still wet.

@TheTotaled1 3 жыл бұрын

MAG weld?...its MIG weld (Metal.Inert.Gas). You could have used a reciprocating saw and had that section of the panel removed with little to no heat in less than half the time it took you to screw around with the belt grinder.

@deankay4434 3 жыл бұрын

@TheTotaled1 >That is using to much common sense! Air saw cutter in corners. The special 3M tool only uses the their belts and abrasives. So $489 or $48 at HF. I have a MIG & you have a MIG, but they use a top-secret Magnetic Anechoic (Sound Waves) Welder. Called a spot welder everywhere else. You can fix it right unless the “Spot Welder” that weighs 560 pounds & counter weighted from the ceiling, like tools the UAW uses. Use it wrong and you can chip or break a finger nail! You are ever thinking the body repair process. $6,300 in tools and $900 of 3M materials. Don’t forget the cavity wax! It’s all fun, until someone puts an eye out! ASE Master Tech since 1978, using a MIG and plug welding holes.

@01mustang05 2 жыл бұрын

Apparently you're wrong; there seems to be a difference between MIG and MAG - that being Inert Gas and Active Gas. It seems each designation depends on the different gasses that can be used.

@shawncollins5821 Жыл бұрын

MIG welding has been incorrectly used in the collision repair industry for decades and the OEMs are starting to correct it. We use active gas, 75%-25% mixed gas which is Active, not Inert. I’m demonstrating as if there is a reinforcement close behind the top panel which is typical. In that case a saw will not be feasible. Thanks for watching.

@MrTheHillfolk Жыл бұрын

@@deankay4434 how did they put an eye out ? Weren't they wearing their 3m safety glasses? Or for extra style points get the tinted ones and score with the ladies ! I got a pair of the tinted ones ,and look at me now I gotta beat the women back with a stick!

@clubsoundla 2 жыл бұрын

The music is out of control! Good video, you will hold your audience better if you keep your hands busy doing the work from the beginning.

@estbakst953 4 жыл бұрын

Cuando puedo ver los videos con audio latino?

@tfs1150 2 жыл бұрын

I guess I am old school, but butt welding on a repair like that is bad form. There should be a sleeve panel put in behind the joint. I would really like to see a video on using a bonded sleeve. I do that on door skins and sail panels all the time and it works great. Also, I force cure 8115 all the time and it makes a bonding repair super fast. Thanks for the video.

@shawncollins5821 Жыл бұрын

Many OEMs have gotten away from using backers especially on outer non- structural panels because they are a moisture/corrosion trap. Toyota is a good example but it’s becoming prevalent. Bonded joints are very time consuming and can lead to mapping or read-through of the joint line after months of heating and cooling cycles. Coefficient of thermal expansion issues.

@raminnajibi8343 3 жыл бұрын

👍 🏎

@vickvam3412 3 жыл бұрын

He pop one out of the oven like on the cooking videos

@netwt449 Жыл бұрын

What is the point of “weld through primer”? (Sorry I had to yell over the music)

@bigfellasydney6970 Жыл бұрын

Rust prevention

@michaelballone4652 2 жыл бұрын

😬😁

@johnstoyak 3 ай бұрын

And what the hell is a mag weld??

@chrisk1944 11 ай бұрын

If you can afford to use your body hammers to pound on a wedge, you can either a. afford to pay someone else to do the work or b. whatever panels you plan to beat later are going to look like shit.