|
|
|
|
| Author |
|
|
Registered
Join Date: May 2002
Location: Georgia
Posts: 3,150
|
Mirror holes and 3m automix panel bonding adhesive
I want to get around to filling the holes in my door from the old flag mirrors. I thought about using this stuff to "weld" a piece of metal underneath the holes from inside the door. Then just fill and prep for paint. Any thoughts?
Ben
__________________
1986 3.2 Carrera |
||
12-14-2008, 04:01 PM
|
|
|
Get off my lawn!
|
I know nothing about that adhesive, but I am guessing that no adhesive will stand up to the stress of driving. Stick you hand out into the air flow at 70 MPH and you will see the pressure the mirror will have to fight. The adhesive will have to stick at all temperature ranges and humidity. It may work for a short term test, but I just cant see how it can stand up for long.
__________________
Glen 49 Year member of the Porsche Club of America 1985 911 Carrera; 2017 Macan 1986 El Camino with Fuel Injected 350 Crate Engine My Motto: I will never be too old to have a happy childhood! |
||
|
12-15-2008, 05:45 AM
|
|
|
Registered
|
Adhesive
Yes, it will work. Read and follow directions.
EPS
__________________
AMG V8 SL55 Mercedes, 993 C2, 86' Carrera 3.6 hot rod, Purple 1998 993 that didn't make the cut, 3 very old 930s, A/Fuel Dragster CH3NO2 (R.I.P.), Blown Alcohol TAD, AA/AA, 360 Maxim wingless, Cummins Turbo Diesel. Amateur Welder, Painter and sculptor sort of. - |
||
|
12-15-2008, 05:55 AM
|
|
|
Czar of C.R.A.P.
Join Date: Jul 2003
Posts: 2,323
|
If it is the black stuff I am thinking of it will most definately hold up to any speed you can go. We used the stuff to rebuild the rear window moulding where the seal sits and also to glue on the front clamp support for our fiberglass top.
You will punch a hole in the metal before you break the patch loose. I guess however you can heat it and it will let loose. I don't know the temp for this but higher than you would get from the sun on the panel else peoples fenders would be falling off on hot days.  It is a bit pricey to use also. The mixing tubes are like $3. and I think a set of epoxy is around $25. If you don't use the entire amount just leave the mixer tube on the gun. This will seal the epoxy when you want to reuse just remove the tube and put on a new one. Works better than removing the mixer and putting on a cap.
__________________
66 912 Coupe 84 Carrera Cab Hardtop HC3.4 Hyper Carrera 2005 Dodge Magnum 5.7 HEMI Cabriolet Racing And Performance C.R.A.P. Gruppe #1 Put on some C.R.A.P. and drive.... |
||
|
12-15-2008, 07:00 AM
|
|
|
Registered
Join Date: Oct 2006
Location: Colorado, USA
Posts: 8,279
|
I don't think the patch would ever fall off, but I'd be more concerned about crack lines eventually showing in the paint. You will have a lot of different materials going there, different expansion rates when they heat/cool in the weather, vibration from driving/opening closing doors, etc. It doesn't take a lot for the paint to crack along the seam between the filler and the hole.
|
||
|
12-15-2008, 07:22 AM
|
|
|
Registered
Join Date: Jan 2002
Location: Long Beach CA, the sewer by the sea.
Posts: 37,708
|
Quote:
My advice: if you have to paint the door, then weld or braze them up. By the time you fill and sand your surface filler, prime and seal, you could just do it with a small metal patch, some rod and a penny on the back to hold it until you get it tacked. Grind smooth, then the paint process. If no access to a welder, your method would be a good 2nd. |
||
|
12-15-2008, 08:20 AM
|
|
|
|
Registered
Join Date: May 2002
Location: Georgia
Posts: 3,150
|
Milt, you are probably right about welding. There is no way to avoid having to re-paint the door either way so welding will be the way. My delima is I have never welded so I better leave it to the pro's.
thanks, Ben
__________________
1986 3.2 Carrera |
||
|
12-15-2008, 12:46 PM
|
|
|
Registered
Join Date: Jan 2002
Location: Long Beach CA, the sewer by the sea.
Posts: 37,708
|
Well, if you plan on doing the painting, etc., yourself, I wouldn't go out of the way to get it welded by others. Your way will work, but make sure you get it so no air or moisture can get between your patch and the new paint. Sometimes even welding doesn't do that. That's why I go over my welds with brazing or lead after grinding them flat.
|
||
|
12-15-2008, 01:32 PM
|
|
|
Get off my lawn!
|
As I mentioned I was not familiar with that glue. It must be some stout stuff to stand up for 20 years of vibrations and temps of 140 degrees sitting in the sun all day.
__________________
Glen 49 Year member of the Porsche Club of America 1985 911 Carrera; 2017 Macan 1986 El Camino with Fuel Injected 350 Crate Engine My Motto: I will never be too old to have a happy childhood! |
||
|
12-15-2008, 02:26 PM
|
|
|
Czar of C.R.A.P.
Join Date: Jul 2003
Posts: 2,323
|
Well you can't beat doing it the right way and weld them shut then lead them. Good luck finding any comercial shop that still does lead. If it is the commercial panel bond that body shops use it isn't going anyplace. Stuff is crazy strong and I can't believe that it would hurt the paint no bigger patch than you are doing. They use it to glue fenders on instead of welding so I don't think it is going to come loose any time soon.
I used it for this  and this  Don't get it on something you don't want stuck you will have to chisel it off.
__________________
66 912 Coupe 84 Carrera Cab Hardtop HC3.4 Hyper Carrera 2005 Dodge Magnum 5.7 HEMI Cabriolet Racing And Performance C.R.A.P. Gruppe #1 Put on some C.R.A.P. and drive.... |
||
|
12-15-2008, 02:51 PM
|
|
Carrera
1996 Other A/Fuel Dragster 525 JP1
2011 
2011 
2011 
2011 
2011 
2011 
1986 911
AMG
