Interesting. I did not have any hinge failure. However, closer inspection shows that the CC seems to be a bit tacky in places that were not before arrival. I am curious about this line:
"with a tacky substance on both surfaces that made me wonder how it could have healed at all" That makes it sound like you attached the two sides while they were still too wet. You know that you are supposed to wait 15-30 minutes for each side to be dry to the touch and then you join them? I did not put foil tape over the vinyl.. but only because I ran out of time :) I probably will add that before the next use. For the record, I used 1.5 cans of CC for a 6' stretch hexayurt. I went pretty heavy. And I used 6" wide strips of vinyl. I beveled my edges and there was quite a bit of tension on the vinyl while it was set up. For each hinge I only had vinyl on one side (unlike the camp danger bifi hinges). Working with the CC was definitely a pain -- so I would love to find a better fixative. Whatever stuff they used on the back of the velcro seemed to hold up stellar. The CC required a respirator, an outdoor work space away from ignition sources, and made the vinyl warp all funny before it was applied. Plus you had to wait a long time for all the curing -- which is a problem if you were trying to do all the cementing on a small 4x8 deck like I was. - jeremy On Thu, Sep 5, 2013 at 1:54 AM, Steve Upstill <[email protected]> wrote: > All I can say is that my experience of the vinyl-contact cement was very > different. I did all the work up front in the expectation of having a > years-long solution, only to have my hinges fail: the vinyl simply pulled > loose in the heat of the Playa (some places the vinyl just casually lifted > as if there was no adhesive there in at all), with a tacky substance on > both surfaces that made me wonder how it could have healed at all. Out > there, I patched like mad with bifi, and now I'm looking at doing the whole > laborious job over again next year. Crap. > > So what went wrong? I have three theories: > > 1) assembly problems, i.e., I put the CC on too thickly, or not thickly > enough, or I didn't wait long enough for it to dry, or too long > 2) the heat was just too much for it > 3) because I laid the vinyl on when the panels were lying on the ground > and abutting, actually folding them over the rest of the way put too much > tension on the hinge. I did it fairly tight because I wanted some tension > in the structure. > > If anybody has any information that would help me figure out which theory > is correct, I'd be enormously grateful. Could others chime in with their > experience? If I'm the only one with failed hinges, that pretty much > disposes of theory #2. Also, did people tape over the vinyl with aluminum > tape? I'm thinking that under theory #2, the shiny stuff would go a long > way to keeping the heat down. > > Thanks, > Steve Upstill > > On Sep 4, 2013, at 7:47 PM, Jeremy Shaw <[email protected]> wrote: > > I built two 6' folding stretch hexayurts this year. One was a traditional > design with camp danger bifi hinges. The other used contact cement, vinyl, > and velcro. > > The contact cement+vinyl+velcro solution definitely required more work up > front. But the pay off on the playa was huge! It went up and down so much > faster. And, it is already ready to go back up again. There is no per-use > consumeables and nothing that has to be cleaned off before the next use. > > I have a bunch of video and other details on the build process that I hope > to upload 'some day' but the short version is, DO IT! > > - jeremy > > -- > You received this message because you are subscribed to the Google Groups > "hexayurt" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > To post to this group, send email to [email protected]. > Visit this group at http://groups.google.com/group/hexayurt. > For more options, visit https://groups.google.com/groups/opt_out. > > > -- > You received this message because you are subscribed to the Google Groups > "hexayurt" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > To post to this group, send email to [email protected]. > Visit this group at http://groups.google.com/group/hexayurt. > For more options, visit https://groups.google.com/groups/opt_out. > -- You received this message because you are subscribed to the Google Groups "hexayurt" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at http://groups.google.com/group/hexayurt. For more options, visit https://groups.google.com/groups/opt_out.
