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Model Forum / General / Railroads / May 2010RFoam Adhesive
What is the best adhesive to use with rigid foam? Jeff  Signature"Never attribute to malice that which is adequately explained by stupidity" Richard Feynman Nobel Prize Physicist "Lowes" has 'DAP' Paneling and Foam Construction Adhesive that I am using on my current layout. Bob > What is the best adhesive to use with rigid foam? > Jeff > What is the best adhesive to use with rigid foam? > Jeff You know what always works? Yellow woodworking glue. Cheap. Non-toxic. Drying time is 24 hours with rigid yellow or blue foam.. It's faster with Styrofoam. Only negative I've found is it creates a hard line, which is hard to cut with the hot wire tool. Mike M With soft foams that flex, you want a glue that flexes like contact adhesives while the rigid foams, something rigid works better. There is always a big problem tho with stuf like white glue as it takes a long time to fully cure as there is no air. As another poster noted, it also gives a rigid line as it is a bit tougher than the foam. I'd check to see if Gorrilia Glue is compatible with the foam as it foams in gaps and tends to cure a lot faster. White glue tends to set from the evaporation of the water in it which is why it takes so long. -- Bob May rmay at nethere.com http: slash /nav.to slash bobmay http: slash /bobmay dot astronomy.net > With soft foams that flex, you want a glue that flexes like contact > adhesives while the rigid foams, something rigid works better. There is [quoted text clipped - 11 lines] > http: slash /nav.to slash bobmay > http: slash /bobmay dot astronomy.net Hi All Yellow carpenters glue, tightbond II. Sorry, I was not specific. I haven't used white glue in so long, I forgot that it's still used. On Styrofoam it drys in a few hours . On Rigid Foam it takes 24 hours or so. I just put a few weights on the foam stack and move on. 95% of my foam work is Styrofoam. The hot wire tool at full temp will cut through it. When I need to glue something fast, I have an industrial Hot Melt polyurethane gun that does not melt the foam, but will hold almost any porous material. I use that for fast, 2 minute tacks. Mike M I consider Titebond and other such "yellow" glues to just be better white glues as they are of the same family. The Titebond is somewhat water resistant relative to the original white glue but still not anywhere near waterproof. Been there and done that! -- Bob May rmay at nethere.com http: slash /nav.to slash bobmay http: slash /bobmay dot astronomy.net > I consider Titebond and other such "yellow" glues to just be better white > glues as they are of the same family. Only in that they're all primarily intended to be wood glues. White glue is a polyvinyl acetate, while the "yellow" or "carpenters" glues are mostly variations on an aliphatic resin theme. All of them are non-toxic and water-based, but they vary quite a bit in terms of strength and application. White glue is the weakest of them all, never dries very hard, and will soften back up rapidly if the joint gets wet or is exposed to heat in excess of about 120 degrees. (That's why we don't use it in building musical instruments.) Titebond 1 has quite a bit more shear-strength than white glues (about the same as traditional hide glues), it dries both faster and harder, and it's more resistant to both moisture and heat once throughly dried. It's also sandable once dry, which white glues aren't, and it dries to a neutral woodish color that makes the joints difficult to see. Titebond 2 is stronger yet, dries a bit faster than Titebond 1, and is even more resistant to coming back loose if exposed to moisture or heat. Unfortunately, it dries to a dark yellowish-orange color that's very difficult to hide and even more difficult to remove if you don't wipe it *all* off while it's still wet. Titebond 3 is the strongest aliphatic resin that I'm aware of. It dries more slowly than Titebonds 1 or 2, which gives you more setup time to get clamps in place, and once dry it's advertised as being waterproof: a claim I've not yet seen disputed by anyone who lacks gills. Presumably it can be made to release if you heat it up far enough (even cyanoacrylates come unstuck at high temps), but so far I've not yet had to try getting a Titebond 3 joint loose again. ~Pete On 5/27/2010 11:36 PM Twibil spake thus: >> I consider Titebond and other such "yellow" glues to just be better white >> glues as they are of the same family. [quoted text clipped - 9 lines] > excess of about 120 degrees. (That's why we don't use it in building > musical instruments.) Right; it also slips or "creeps" under stress. But regarding the topic at hand, white glue is more than adequate for probably any model-railroad usage. Certainly for gluing a couple sheets of foam together. There's absolutely no need to use more expensive "carpenters" glues (aliphatic resin) here. Cheap white glue'll do the job well. SignatureThe fashion in killing has an insouciant, flirty style this spring, with the flaunting of well-defined muscle, wrapped in flags. - Comment from an article on Antiwar.com (http://antiwar.com) > Right; it also slips or "creeps" under stress. But regarding the topic > at hand, white glue is more than adequate for probably any > model-railroad usage. Certainly for gluing a couple sheets of foam > together. There's absolutely no need to use more expensive "carpenters" > glues (aliphatic resin) here. Cheap white glue'll do the job well. I'm sure that's true. Joints between pieces of scenery foam are seldom under much stress. I just wanted to correct the the misconception that white glues (polyvinyl acetates) and aliphatic resins "are of the same family". That's akin to saying that Phillips-head and flat-bladed screwdrivers are the same tool: yes, they do the same job, but they are *not* interchangable. ~Pete On May 28, 11:48 am, David Nebenzahl <nob...@but.us.chickens> wrote: > Right; it also slips or "creeps" under stress. But regarding the topic > at hand, white glue is more than adequate for probably any > model-railroad usage. Certainly for gluing a couple sheets of foam > together. There's absolutely no need to use more expensive "carpenters" > glues (aliphatic resin) here. Cheap white glue'll do the job well. I'm sure that's true. Joints between pieces of scenery foam are seldom under much stress. I just wanted to correct the the misconception that white glues (polyvinyl acetates) and aliphatic resins "are of the same family". That's akin to saying that Phillips-head and flat-bladed screwdrivers are the same tool: yes, they do the same job, but they are *not* interchangable. ~Pete Well, absent a grinder, the phillips screwdriver is pretty much useless for flat blade screws. But the appropriate size flat blade screwdriver can be used on a phillips head screw. ;-) > Well, absent a grinder, the phillips screwdriver is pretty much useless for > flat blade screws. But the appropriate size flat blade screwdriver can be > used on a phillips head screw. ;-) It is not, however, good for either the screw *or* the screwdriver. ~Pete P.S. Do you sleep in hotel lobbies a lot? On May 28, 2:43 pm, "Lobby Dosser" <L...@invalid.invalid> wrote: > Well, absent a grinder, the phillips screwdriver is pretty much useless > for > flat blade screws. But the appropriate size flat blade screwdriver can be > used on a phillips head screw. ;-) It is not, however, good for either the screw *or* the screwdriver. ~Pete P.S. Do you sleep in hotel lobbies a lot? ---------------------------------------------------------- I try to keep to Private hallways ... > On May 28, 2:43 pm, "Lobby Dosser" <L...@invalid.invalid> wrote: > [quoted text clipped - 11 lines] > ---------------------------------------------------------- > I try to keep to Private hallways ... Why not seek out hotels that rent by the hour? > Why not seek out hotels that rent by the hour? parsimonious husband, during first visit to London: "The bed seems soft" Wife: "And remarkably warm" On May 29, 2:18 am, "Lobby Dosser" <L...@invalid.invalid> wrote: > "Twibil" <nowayjo...@gmail.com> wrote in message > [quoted text clipped - 14 lines] > ---------------------------------------------------------- > I try to keep to Private hallways ... Why not seek out hotels that rent by the hour? ------------------------------------------------------------------- Typically more expensive for eight plus hours. >On May 28, 2:43 pm, "Lobby Dosser" <L...@invalid.invalid> wrote: >> [quoted text clipped - 11 lines] >---------------------------------------------------------- >I try to keep to Private hallways ... As opposed to privet hedges? > >I try to keep to Private hallways ... > > As opposed to privet hedges? Better those than privy hedges. >>>I try to keep to Private hallways ... >> >> As opposed to privet hedges? > > Better those than privy hedges. This is getting really bogged down. SignatureSteve On May 29, 6:57 am, Christopher A. Lee <ca...@optonline.net> wrote: > >I try to keep to Private hallways ... > > As opposed to privet hedges? Better those than privy hedges. ----------------------------------------------------------- Does the Privy Seal yet bark, And is there honey still for tea. > Does the Privy Seal yet bark, > And is there honey still for tea. `Twas brillig, and the slithy toves Did gyre and gimble in the wabe: All mimsy were the borogoves, And the mome raths outgrabe. (Originally thought to have been penned by an obscure mathematician named Dodgson, it turns out the above were actually the original operating rules for the Great Western Railway. This may explain something.) On May 29, 2:41 pm, "Lobby Dosser" <L...@invalid.invalid> wrote: > Does the Privy Seal yet bark, > And is there honey still for tea. `Twas brillig, and the slithy toves Did gyre and gimble in the wabe: All mimsy were the borogoves, And the mome raths outgrabe. (Originally thought to have been penned by an obscure mathematician named Dodgson, it turns out the above were actually the original operating rules for the Great Western Railway. This may explain something.) ------------------------------------------------------------------- You'll get flamed for mocking God's Wonderful Railway! > "Twibil" <nowayjose6@gmail.com> wrote in message > news:3d685ea0-c400-423e-af63-28740a528ca4@n37g2000prc.googlegroups. [quoted text clipped - 8 lines] > All mimsy were the borogoves, > And the mome raths outgrabe. Beware the Jabberwock, my son, the jaws that bite and claws that scratch Beware the jubjub bird and shun the frumious bandersnatch. whaaaaa? > > `Twas brillig, and the slithy toves > > Did gyre and gimble in the wabe: [quoted text clipped - 7 lines] > > whaaaaa? Thanx for asking: Bandersnatch — A swift moving creature with snapping jaws, capable of extending its neck. Beamish — Radiantly beaming, happy, cheerful. Although Carroll may have thought he had coined this word, it is attested from 1530. Borogove — A thin shabby-looking bird with its feathers sticking out all round, "something like a live mop". Brillig — Four o'clock in the afternoon: the time when you begin broiling things for dinner. Burbled — Possibly a mixture of "bleat", "murmur", and "warble". Burble is also a pre-existing word, circa 1303, meaning to form bubbles as in boiling water. Chortled — Combination of chuckle and snort. Frabjous — Possibly a blend of fair, fabulous, and joyous. Frumious — Combination of "fuming" and "furious". Galumphing — Perhaps a blend of "gallop" and "triumphant". Used to describe a way of "trotting" down hill, while keeping one foot further back than the other. This enables the Galumpher to stop quickly. Gimble — To make holes as does a gimlet. Gyre — To go round and round like a gyroscope. Jubjub bird — A desperate bird that lives in perpetual passion, according to the Butcher in Carroll's later poem The Hunting of the Snark. Manxome — Fearsome. A portmanteau of "manly" and "buxom", the latter relating to men for most of its history. Mimsy — Combination of "miserable" and "flimsy". Mome — Possibly short for "from home," meaning that the raths had lost their way. Outgrabe (past tense; present tense outgribe) — Something between bellowing and whistling, with a kind of sneeze in the middle. Rath — A sort of green pig. Snicker-snack — A word of unclear meaning, probably related to snickersnee. Slithy — Combination of "slimy" and "lithe." Tove — A combination of a badger, a lizard, and a corkscrew. They are very curious looking creatures which make their nests under sundials and eat only cheese. Tulgey — Thick, dense, dark. Uffish — A state of mind when the voice is gruffish, the manner roughish, and the temper huffish. Vorpal — See vorpal sword. Wabe — The grass plot around a sundial. It is called a "wabe" because it goes a long way before it, and a long way behind it, and a long way beyond it on each side. >>On May 28, 2:43 pm, "Lobby Dosser" <L...@invalid.invalid> wrote: >>> [quoted text clipped - 14 lines] > > As opposed to privet hedges? A completely different avocado. |
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