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Old 10-07-2015, 01:17 PM   #1
Mini-Skoolie
 
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Exterior Steel Glue

I remember somebody putting down a layer of adhesive before riveting on the exterior steel. I'm starting that process tonight and going on a last chance supply run. Does anyone know what I'm talking about? What kind of adhesive should I use/should I even bother with it?
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Old 10-07-2015, 01:52 PM   #2
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At the very least I would suggest a good bead of seam sealer all around just to keep water from migrating under the metal panels. But there are also adhesives that will do the same as well as bond the panels. Some are even rated as strong or stronger than riveting or welding. "Sika" makes some of the most advanced adhesives on the planet. They are used commercially to hold together everything from consumer products to cars, planes & trains. They have a huge range of them so some homework or a phone call is the best way to find which product would fit your application best.
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Old 10-07-2015, 02:59 PM   #3
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I would think some sealant and rivets should do the trick. But you may be able to get some panel bond that they use for automotive panels and have it serve a dual purpose of both sealing and aiding the rivets in adhesion. You may be able to lower the amount of rivets...

http://3mcollision.com/3m-panel-bond...ive-08115.html
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Old 10-07-2015, 03:04 PM   #4
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I used automotive VHB tape to stick the panels to the bus before riveting.

It's hilarious/scary that you can just tape 4'x10' sheet steel panels onto a vehicle and they actually stick!

After sticking, I then solid riveted the panels to the frame, through the tape.

Quote:
Originally Posted by Intalleyvision View Post
I remember somebody putting down a layer of adhesive before riveting on the exterior steel. I'm starting that process tonight and going on a last chance supply run. Does anyone know what I'm talking about? What kind of adhesive should I use/should I even bother with it?
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Old 10-07-2015, 03:14 PM   #5
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Yup, VHB tape is what high end enclosed trailers are made with.

No mechanical fasteners needed.

Nat
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Old 10-07-2015, 03:19 PM   #6
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The 3M VHB tape is indeed pretty awesome stuff. The only issue I have noticed involves riveting through it. Because it is about 1/8th" or so thick, pulling down rivets through it tends to create "puckers" for lack of a better word, around each rivet unless the metal is pretty heavy gauge.
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Old 10-07-2015, 03:21 PM   #7
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Quote:
Originally Posted by Tango View Post
The 3M VHB tape is indeed pretty awesome stuff. The only issue I have noticed involves riveting through it. Because it is about 1/8th" or so thick, pulling down rivets through it tends to create "puckers" for lack of a better word, around each rivet unless the metal is pretty heavy gauge.
I got the same effect by using too much seam seal before I got a better calking gun.

Good pointers.

Nat
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Old 10-07-2015, 03:40 PM   #8
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Did we ever come to a conclusion on the Rivets vs Bolts debate?
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Old 10-07-2015, 08:32 PM   #9
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Quote:
Originally Posted by Intalleyvision View Post
Did we ever come to a conclusion on the Rivets vs Bolts debate?
They both work fine.

Solid core rivets and bolts of the same diameter have vary close to the same shear strength.

If you have a friend to help you buck rivets, and the $$ in tools, go for it.

If you want to use the tools you already have, use bolts.

Bolts are also more readily available. Rivets can be a pain to get in some locations.

Nat
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Old 02-16-2016, 02:36 PM   #10
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Has anyone been brave/adventurous enough to try the vhb without any mechanical fasteners or should I just step out on a limb and be the first !?
Won't be starting my roof raise till next winter, after I get my shop put up.
Thanx All.
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