JB Weld is great stuff for sure. It is available in hardware and auto-parts stores, cures very hard (not flexible) and is machinable once hard. You can lathe it, mill it, and tap it. It adheres fantastically to almost anything, even many low-friction plastic surfaces. But is it not flexible at all, if you need that feature. If you don't need flexibility, then it is one of the best epoxies. -Bill G.
Majewski, Randy wrote: > Hi: > A 2 part epoxy-adhesive you may want to consider or test it first is > JB-Weld. The grey stuff, not the quick 4-minute stuff. > I would test it on 2 scrap peices first if you can. Both areas that > will be bonded need to be clean, and roughened. You will need to > position the 2 parts so they will not move for 24 hours. I would then > wait an additional 48 hours, before handling. > Just a thought. > Thanks Randy Majewski > ** > ------------------------------------------------------------------------ > *From:* [EMAIL PROTECTED] on behalf of Bill Gottesman > *Sent:* Sat 8/9/2008 7:58 PM > *To:* John Carmichael > *Cc:* 'sundial' > *Subject:* Re: glue for stone dials > > 3-M makes an epoxy DP-190, which is designed for stone and materials > with dissimilar coefficients of expansion. It comes in translucent and > gray -- the gray is the more durable of the two. I use it to bond glass > mirrors to brass supports, and it works great. It remains flexible, but > not soft or spongy; has excellent resistance to peeling; and is durable > over time. It is really great stuff. DP-125 gray is almost as strong, > and is often easier to find and can be purchased in smaller quantities. > Don't look for it in a hardware store, you won't find it there. Order it > from Grainger, or McMaster-Carr, or similar industrial supplier. > > The granite industry must have its own products as well. I would start > by looking at some granite tool website, perhaps by googling "granite > diamond polishing", and then clicking around. > > - Bill Gottesman > > John Carmichael wrote: > > > > Dear Rodney: > > > > I’ve tried just about every glue known to man, and I particularly > > dislike gorilla glue for use with stone. It’s messy, has a bright > > yellow color when dry, and just doesn’t seem to hold well. It’s an odd > > type of glue in that it starts to bubble up like foam as soon as you > > squeeze it out of the bottle. The best adhesive that I have found is > > not a glue at all. It’s clear 100% silicone caulking. It’s pretty > > messy too if you’re not careful when applying it, but works great. It > > is easy to clean up excess overflow when it is still wet using mineral > > spirits. It’s also pretty easy to clean up even when dry if you just > > rub or cut it off. It is the best adhesive I’ve found for bonding > > metal to stone because it is flexible and adjusts to the different > > thermal expansion coefficients of metal and stone. But it works great > > bonding stone to stone. > > > > But since you are bonding granite to granite, you could also use epoxy > > adhesive that is not flexible (the kind where you mix a catalyst with > > the glue). “Liquid Nails” will also work for you. Whatever you do, DO > > NOT use a water soluble glue! > > > > Hope this helps, > > > > John > > > > John L. Carmichael > > > > Sundial Sculptures > > > > 925 E. Foothills Dr. > > > > Tucson AZ 85718-4716 > > > > USA > > > > Tel: 520-6961709 > > > > Email: [EMAIL PROTECTED] <mailto:[EMAIL PROTECTED]> > > > > *My Websites:* > > > > (business) *Sundial Sculptures:* http://www.sundialsculptures.com > <http://www.sundialsculptures.com/> > > <http://www.sundialsculptures.com/> > > > > (educational) *Chinook Trail Sundial: > > *http://advanceassociates.com/Sundials/COSprings/ > > > > (educational) *Earth & Sky Equatorial Sundial:* > > http://advanceassociates.com/Sundials/Earth-Sky_Dial/ > > > > (educational) *My Painted Wall Sundial:* > > http://www.advanceassociates.com/WallDial > > > > (educational) *Painted Wall Sundials:* > > http://advanceassociates.com/WallDial/PWS_Home.html > > > > (educational) *Stained Glass Sundials:* > > http://www.stainedglasssundials.com > <http://www.stainedglasssundials.com/> > > <http://www.stainedglasssundials.com/> > > > > (educational) *Sundial Cupolas, Towers & Turrets:* > > http://StainedGlassSundials.com/CupolaSundial/index.html > <http://stainedglasssundials.com/CupolaSundial/index.html> > > <http://stainedglasssundials.com/CupolaSundial/index.html> > > > > *From:* [EMAIL PROTECTED] > > [mailto:[EMAIL PROTECTED] *On Behalf Of *Rodney Heil > > *Sent:* Saturday, August 09, 2008 1:51 PM > > *To:* [email protected] > > *Subject:* glue for stone dials > > > > Hi folks, > > > > For those of you who work with stone, what sort of glue would you use > > to attach polished granite to polished granite? I was just planning to > > glue the gnomon to the face. The man at the granite flooring store > > told me Gorilla Glue would be just fine, but I would like to hear from > > the sundial crowd. When this dial is finished, I will post a photo of > > it to this list. Thanks in advance. > > > > Rodney Heil > > > > 35 deg. 37' 26" N > > > > 117 deg. 40' 17" W > > > > ------------------------------------------------------------------------ > > > > --------------------------------------------------- > > https://lists.uni-koeln.de/mailman/listinfo/sundial > > > > > --------------------------------------------------- > https://lists.uni-koeln.de/mailman/listinfo/sundial > --------------------------------------------------- https://lists.uni-koeln.de/mailman/listinfo/sundial
