Cured in the bottle? Some how it got opened before you got it. It cures with contact with water vapor in the air
The other polyurethane that is very good is made by 3M and called "3M 5200" It is sold as a marine adhesive. One thing you can do with this 5200 is install a through hole sensor on a boat that is in sea water. I drilled a hole with a hole saw and a diver applies 3M 5200 and the sensor from the outside then I tighten the nut down. (Yes a LOT of sea water gets in.) The glue does it's job and the fitting can never be removed. The stuff cures to be the same kind of plastic used on modern inline sake and skateboard wheels. I good standard test of a glue is to try and glue a 1" steel ball bearing to a steel plate. Then measure the force it takes on the side of the ball to break the bond. with 5200 you will be using a hydraulic press The cured glue is hard to hack-saw. The trick is to use thin music wire and try to slice the joint with the wire. Gorilla glue is as sticky but cures to a kind of foam and you can saw the foam or cut it with a knife or wood chisel. 5200 cuts too but it is just like trying to cut a skateboard wheel, not easy. All that said, it is rare to need such a string bond and 5200 costs $25 per tube and takes 7 days to cure. I used hot glue last time I wanted to mount a power supply inside a metal box along with some other electrics. I can take it apart later with a small pry bar but now I can turn it upside down a shake it and it stays in place. On Sat, Oct 22, 2016 at 5:55 PM, Gene Heskett <[email protected]> wrote: > On Saturday 22 October 2016 20:21:24 [email protected] wrote: > > > Two types of glue I can think of one is gorilla glue the stuff is a > > polyurethane that expands and sticks to anything the other is hot glue > > which works surprisingly well for mounting electronic parts > > > I bought some of a newer gorilla that claimed it doesn't expand so much a > month ago, but it had cured in the bottle when I tried to open it, so > I've still no experience with it. It did sound promising though. > > Thanks Chris. > > > On Oct 22, 2016, at 3:33 PM, Dave Cole <[email protected]> > > > wrote: > > > > > > I think there is some super high end glue that 3M makes that will > > > glue HDPE, but most people don't bother trying to glue it. > > > I would consider stapling velcro to the HDPE strips. I've had > > > very good luck using the industrial strength velcro that 3M sells, > > > not the Velcro brand. I've mounted power supplies with it inside > > > control cabinets that could not be drilled and years later it is > > > still working fine. No failures. > > > But be careful, the stuff they show holding Fire Extinguishers to > > > the wall can really do that! Don't plan on separating that without > > > really yanking on it. > > > > > > Dave > > > > > >> On 10/22/2016 5:47 PM, Gene Heskett wrote: > > >> Greetings all; > > >> > > >> I am in the process of re-arranging the peripheral layout on the > > >> inside face of the box that holds the BoB's, opto's etc on the > > >> boxes swinging door plus a couple power supplies and stepper > > >> drivers in the box proper. > > >> > > >> As opposed to drilling umpty holes in this cover, I've sawn out > > >> some strips of HDPE, and screwed the boards to those. Its > > >> nominally 1/2" thick and I have not, but could, sand the face to be > > >> glued. > > >> > > >> So now I need to fix them to the inside face of this boxes door, > > >> and plug up the holes I have drilled already in a probably vain > > >> attempt to exclude swarf. Except for some conduit holes in the > > >> bottom, its gasketed and liquid tight. So I need a glue that will > > >> stick to this HDPE. G0-2 or Goop is one possibility, but is there > > >> something that will get an even better grip on that stuff? > > >> > > >> Thanks. > > >> > > >> Cheers, Gene Heskett > > > > > > -------------------------------------------------------------------- > > >---------- Check out the vibrant tech community on one of the world's > > > most engaging tech sites, SlashDot.org! http://sdm.link/slashdot > > > _______________________________________________ > > > Emc-users mailing list > > > [email protected] > > > https://lists.sourceforge.net/lists/listinfo/emc-users > > > > ---------------------------------------------------------------------- > >-------- Check out the vibrant tech community on one of the world's > > most engaging tech sites, SlashDot.org! http://sdm.link/slashdot > > _______________________________________________ > > Emc-users mailing list > > [email protected] > > https://lists.sourceforge.net/lists/listinfo/emc-users > > > Cheers, Gene Heskett > -- > "There are four boxes to be used in defense of liberty: > soap, ballot, jury, and ammo. Please use in that order." > -Ed Howdershelt (Author) > Genes Web page <http://geneslinuxbox.net:6309/gene> > > ------------------------------------------------------------ > ------------------ > Check out the vibrant tech community on one of the world's most > engaging tech sites, SlashDot.org! http://sdm.link/slashdot > _______________________________________________ > Emc-users mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/emc-users > -- Chris Albertson Redondo Beach, California ------------------------------------------------------------------------------ Check out the vibrant tech community on one of the world's most engaging tech sites, SlashDot.org! http://sdm.link/slashdot _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
