I tried them, and they did release in  a strong wind. I also had trouble
with them pulling loose if a big pocket of water got up there. Of course,
there are more secure ways to affix an awning, like C-channel. I may
eventually use that but I want to try the aluminum-rod-clamped-to-the-gutter
approach for a couple of years to determine just want I want before I cut or
drill anything.

Jim

On Sun, Jul 17, 2011 at 3:43 PM, David Beierl <dbeierl@attglobal.net> wrote:

> At 04:05 PM 7/17/2011, Dave Mcneely wrote:
>
>> for my jury rigged (but good) home design awning, I use carpenter's
>> clamps, spring loaded.  Work great.  mcneely
>>
>
> How do they work in a strong wind?  Are you talking about metal
> clamps around 4" long that take a serious effort to open?  I've
> always been concerned that any kind of spring clamp would release in
> a strong wind...
>
> Yours,
> David
>