PDA

View Full Version : Wish me luck



Bill in Oregon
03-30-2017, 06:41 PM
Cobbled together this frame to go fetch three sheets of exterior 1/4-inch 4X16 sign ply about 40 minutes away. Properly strapped down, I hope I am for an easy, carefree drive home. If I make it back with the ply intact, I am going to give it a try for the side panels of a Gloucester Light Dory. This sign ply has a thin aluminum coating on one side. Does anyone know if epoxy would adhere to a metallic surface?

http://i23.photobucket.com/albums/b356/BillOregon/fullsizeoutput_84c_zpso6jpr4w0.jpeg (http://s23.photobucket.com/user/BillOregon/media/fullsizeoutput_84c_zpso6jpr4w0.jpeg.html)

wizbang 13
03-30-2017, 06:51 PM
Scarphing is quick. easy and cheap

David G
03-30-2017, 06:54 PM
Make sure to clamp or duct tape the leading edges of those sheets together, or they will catch the wind and snap off. I helps if there's a line holding the front of your bundle down as well. Probably tied off under your front bumper.

cstevens
03-30-2017, 07:07 PM
Three things:

1. Careful over bumps. Wouldn't take much of an angle to ground out the back end.

2. I thought I saw a similar question about the aluminum coating on another thread recently, and the answer was that it's a bad idea. Can't find it right now though.

3. Assuming that 4x8 ply is available closer, I'd think that you could do the scarfs in less time than the trip you are about to make.

but all that said, good luck!

Ron Williamson
03-30-2017, 07:16 PM
I had some of that ,but it was 1/2".
It warped as the wood side absorbed moisture and got bigger.
Be aware.
R

webishop14
03-30-2017, 07:38 PM
West System has a 404 High-Density Adhesive Filler for "dissimilar materials." It might do the job. But then, it all depends on whose epoxy you want to use, too.

StevenBauer
03-30-2017, 07:53 PM
I think there is an etching solution to epoxy aluminum.

SchoonerRat
03-30-2017, 08:37 PM
I'd also worry about the attachment of the aluminum to the ply. You might get great adhesion with epoxy to the aluminum, but the aluminum might just peal right off the ply, with the epoxy hangin' on for dear life.

David G
03-30-2017, 09:00 PM
I'd also worry about the attachment of the aluminum to the ply. You might get great adhesion with epoxy to the aluminum, but the aluminum might just peal right off the ply, with the epoxy hangin' on for dear life.

Yes... not just one, but two layers of adhesion concern. As I said before, I thing he sands, scrapes, or heats it off first thing.

SchoonerRat
03-30-2017, 09:12 PM
Yes... not just one, but two layers of adhesion concern. As I said before, I thing he sands, scrapes, or heats it off first thing.

Not just 2 layers of adhesion, but one that you have no control over.

Mo 'Poxy
03-30-2017, 09:35 PM
Scarphing is quick. easy and cheap

and addictive

http://seascull.blogspot.com/2014/02/scarphing-101.html

Wiley Baggins
03-30-2017, 09:48 PM
This sign ply has a thin aluminum coating on one side. Does anyone know if epoxy would adhere to a metallic surface?


1. Stitch & glue or chine logs?
2. Aluminum face on the outside?
3. Remove the aluminum layer in the way of any fillets or external tape at the chines?

I think you'll be able to make it work if the underlying laminates are worthy of your efforts.

Thorne
03-30-2017, 11:46 PM
Much better to carry it level, as I'm afraid you'll get a lot of lift and motion with the panels at an angle to the wind like that. Can you build a 2x4 frame for the back of your truck bed to carry that level?

Al G
03-31-2017, 02:03 AM
Good luck mate. The cows will be home by the time this lot finish crucifying you. Hopefully I will learn about bonding aluminium with epoxy from you.

Woxbox
03-31-2017, 03:56 AM
I've seen people get away with much sketchier arrangements. You'll be fine.

Bill in Oregon
03-31-2017, 12:30 PM
Got them home no problem, but on closer examination they are not suitable for side planks. The fairly thick stippled aluminum coating is on both faces and they are just too stiff. Will put them on Craigslist. They would make interesting truck bed flooring.

http://i23.photobucket.com/albums/b356/BillOregon/fullsizeoutput_84d_zpseabourjb.jpeg (http://s23.photobucket.com/user/BillOregon/media/fullsizeoutput_84d_zpseabourjb.jpeg.html)

http://i23.photobucket.com/albums/b356/BillOregon/P1000548_zpsocfrs1gd.jpg (http://s23.photobucket.com/user/BillOregon/media/P1000548_zpsocfrs1gd.jpg.html)

Phil Y
03-31-2017, 03:59 PM
Looks like a cool motorcycle jump ramp, right there.

Bill in Oregon
03-31-2017, 05:44 PM
You'd probably face-plant into our front porch ...

BY:D