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Has anyone seen this on ebay?

Posted:
Fri Apr 11, 2008 6:28 pm
by Lou Park
http://cgi.ebay.com/12-Aluminum-Cargo-T ... dZViewItem
I'm wondering if this is good for the exterior or if it's the wrong aluminum
Lou

Posted:
Fri Apr 11, 2008 7:19 pm
by Jiminsav
it will work like a champ if you can get it.

Posted:
Fri Apr 11, 2008 7:37 pm
by exminnesotaboy
super good price. If it is indeed .019, that seems a little thin for my tastes, but someone else should chime in before you take it to heart.
I put .032 on mine, and will go to .040 on my next one

Posted:
Fri Apr 11, 2008 9:26 pm
by madprinter
.019 is awfully thin. You would definately need some plywood under it.
But at that price it would be worth it to get them and see if they work, if not then just replace with something heavier. Good luck on your bidding and building.
William

Posted:
Fri Apr 11, 2008 9:29 pm
by Jiminsav
if that stuff is .019 thousands thick, it would be crumpled on the floor like tissue paper..it's at least .040 thousands.
edit: fixed as per Gage's post.


Posted:
Fri Apr 11, 2008 11:51 pm
by Gage
Jiminsav wrote:if that stuff is .019 thousands thick, it would be crumpled on the floor like tissue paper..it's at least .40 thousands.
I believe that would be .040.
One thing to remember is that the thinner the alum, the more movement with heat & cold there will be.
More movement/expansion with heat and cold.

Posted:
Sat Apr 12, 2008 7:12 am
by eamarquardt
One thing to remember is that the thinner the alum, the more movement with heat & cold there will be. Gage
Your physics handbook must be different than mine. It says the coefficient of linear expansion for all shapes/thicknesses is the same.
Cheers,
Gus
Re: More movement/expansion with heat and cold.

Posted:
Sat Apr 12, 2008 7:10 pm
by Steve_Cox
eamarquardt wrote:One thing to remember is that the thinner the alum, the more movement with heat & cold there will be. Gage
Your physics handbook must be different than mine. It says the coefficient of linear expansion for all shapes/thicknesses is the same.
Cheers,
Gus
Gus,
Thinner sheets will distort away from the substrate more because they are more flexible at any temperature. The thicker sheets have a tendency to expand in, as you say it, in a more linear way....... different physics handbook? Get a grip man.
A reasonable answer

Posted:
Sat Apr 12, 2008 8:15 pm
by eamarquardt
Hi Steve,
You came back with a reasonable answer to a "SMART A@@" comment. Sometimes the comments on the forum appear to be based upon "out of this universe" physics. I was just teasing but you came back with a good explanation. Some people have never been introduced to the concept of "linear thermal expansion" (for example a hole in a piece of steel expands when heated just the same as a piece of steel the shape/size as the hole). I find a great many car sound system enthusiasts aren't familiar with the concept of "noise pollution" either. Due to frazzeled nerves, loud sounds cause me a great deal of pain. According to my "therapists" (seen twice a week for neurofeedback therapy) I have a pretty good grip, as I haven't committed suicide (google suicide disease). I'm just having too much fun spending Suzy's money, working on my teardrop, and my other three authorized (by Suzy using "her" money) projects.
Cheers,
Gus
Re: More movement/expansion with heat and cold.

Posted:
Sat Apr 12, 2008 9:03 pm
by Gage
eamarquardt wrote:One thing to remember is that the thinner the alum, the more movement with heat & cold there will be. Gage
Your physics handbook must be different than mine. It says the coefficient of linear expansion for all shapes/thicknesses is the same.
Cheers,
Gus
Well Gus, I would tell you about real world physics vs aluminum sheeting. But I've been told not to. So you skin your trailer with .016 sheeting and I'll just laugh later. 