Re: (ET) Panels/Batt Boxes - poly plastics & angle Iron, etc

[JBR <reinharj frontiernet net>]

How do they weld the plastics ?
Solvent, thermal, ultrasonics ?
I have lots of angle iron lying around ...
Also, same type battery boxes sound workable for Comuta-Cars (except 
aluminum
angle).

So, another new fabrication/material joining process needs to be learned 
...
I bought the 'Gingery' book on injection molding last year, but welding
polyethylene sheet seams into a box sounds like MUCH less work - especially
due to the size (though a 1 piece molded box might be great).

It might be really nice if somebody somewhere made a poly box that happened
 to fit 2 or 4 golfcart batteries, with minimal modification ...

Anyone ever try reshaping (bending 90 degrees, etc) plastic sheet - such 
as 
old plastic 55 gallon drum, or a heavy plastic pond liner (the thick type) 
?
I saw a guy do a fair job on a sheet of plexiglas years ago with a quartz 
fuser rod from a large old copier - so I am looking for a poratble quartz 
rod 
heater to salvage the rods from.

On Sunday 11 June 2006 07:31 pm, David Roden wrote:
> I'm pretty sure that polypropylene and polyethylene are both highly
> resistant to sulfuric acid.
>
> Some road EV hobbyists use angle iron frames that support the weight of 
> the
> batteries, then make poly boxes to fit the frames and contain any spilled
> or seeped electrolyte.  Typical is sheet stock with plastic-welded 
> corners.
> Various protections are used for the steel - powder coating, rubberized
> bedliner, epoxy bedliner, plain old paint frequently renewed, etc.  The
> poly liner minimizes acid contact with the frames, so protection is not
> quite as critical as it might be otherwise.
>
>
> David Roden - Akron, Ohio, USA

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