[geeks] Design feedback?

[Bill Bradford]

On Sat, Jan 02, 2016 at 10:50:11PM -0600, Bill Bradford wrote:
>I'm tired of store-bought folding cot frames dying within a year because I'm a
>big dude... I have a couple friends who work at steel fabricators.. so I'm
>working on a design.
>
>Not folding - just "tear down / put back together".  Sized for a twin mattress
>- I have a tri-fold 6" thick memory foam mattress I use for overnight stays at
> friends' events or camping.  The problem is that being a big guy, in his
>40s, it hurts having to get down / get up off the ground every day.  I want
>something I can not only use to sleep on, but sit on without having to worry
>about it collapsing underneath me.
>
>The last folding frame I bought was of this basic design, and it started
>bending (on the "wires" under the mattress) after a couple of uses, and
>eventually after a year the middle leg bent just a little off straight and
>boom, there it went (the welds broke).
>
>http://www.amazon.com/SmartBase-Foundation-Replacement-Noise-Free-Under-bed/dp/
>B006MIPW70
>
>Here's a quick picture I drew up for something relatively "bulletproof" and
>some notes.  Thoughts / ideas / improvements?  I have no idea what type of
>tubing or what size or material (aluminum? steel?) to spec out for the job.
>
>http://www.mrbill.net/cot.jpg
>
>Also, anybody really good with a CAD program?  I'd be willing to pay you to
>make some proper design drawings once I settle on something, so I can just
>give the fab people mesured drawings and let them get to it.
>
>Bill

I see that they've now come out with an "elite" version that supports 4400 lbs
of "evenly distributed weight" (vs. 2400 with the "wires" version)...

http://www.amazon.com/dp/B00BWC1UDG

Dunno if I want to drop $120 to try it, though.

Bill

-- 
Bill Bradford
Houston, Texas USA