Here's a followup based on my recent experiments with 3M FSK:
(1) Bought a roll of 4" wide FSK
(2) Cut up a small (1' x 3') piece of R-MAX 1" thick Thermax and
constructed two standard hinges, one flat and one beveled using only FSK.
(3) Flexed each hinge roughly 50 full cycles,
based on a rough estimate I made for how many times a hinge might be
used in the lifetime of a hexayurt
(4) Left the assembly in the sun (and rain) for 4 weeks straight. (It got
roughly 8-10 hours of full sun exposure per day)
I just took in the assembly this morning to look at it, and the tape is
holding on to the R-MAX as well as the day I first put it out in the sun.
There are crease lines at the hinge flex points in the aluminum, but there
is no light leakage whatsoever -- telling me the tape is still quite
viable. I see no adhesion problems and my fingernail cannot easily get
under the tape.
Furthermore, if I put moderate stress forces on the hinges (scaled down to
the small size of the board) there appears to be no indication the hinges
might fail. FSK seems like a win-win to me!
Sean: Thanks for your detailed reply to my query, providing your
real-world experience with FSK. Based on my experiments and your report, I
am going to proceed with using FSK to do overhauls on my 2 current yurts
and recommend FSK to others who are currently building yurts in my area.
--Wolf
On Tuesday, May 6, 2014 3:46:39 PM UTC-4, Sean Glang wrote:
>
> Yes, I've had my yurt out there with the same FSK tape on it for four
> years in a row.
>
> I use BDF tape for the ring, and for securing the two halves of the roof
> together.
>
> Last year my yurt blew down, the BDF tape at the ring didn't hold, the FSK
> tape held the hinges together. Probably more of an issue of applying tape
> to a dusty surface, but enough of a test case to prove the strength of FSK
> for me.
>
> The FSK is the best option for hinges, IMO.
>
> I also use it to cover the edges of the foil tape I used on the ends of
> the panels. After a few years they get beat up, and can kinda bubble up
> from the surface of the boards. It's nice to be able to seal them down flat
> with something that will match the foil of the panels and not degrade in
> sunlight.
>
>
>
>
>
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