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Animal glue was the most common woodworking glue for thousands of years until the advent of synthetic glues, such as polyvinyl acetate (PVA) and other resin glues, in the 20th century. Today it is used primarily in specialty applications, such as lutherie , pipe organ building , piano repairs, and antique restoration.
Alternately, resin casting may be accomplished with a resin plus a nearly equal amount of a "hardener" liquid (as in many epoxy resin or polyester resin systems), which functionally contains a second polymer, for use in forming a final product plastic which is a copolymer. Copolymers contain two different alternating chemical entities in the ...
There are illustrations of dogs on the walls of tombs dating back to the Bronze Age, as well as statues, children's toys, and ceramics depicting dogs. Hunting dogs are commonly portrayed. [ 2 ] One of the prehistoric paintings estimated to be 9,000 years old found at the Bhimbetka rock shelters in India depict a dog held on a leash by a man. [ 3 ]
Polyester resin and epoxies are toxic and noxious. The wax-resin is fast and easy to use, making it a possible new alternative to fill materials in the conservation field. The wax-resin works best on losses that allow for large contact with the original, primed surface and on losses that are thicker than 1/16in.
Staffordshire dogs were described by writer Teleri Lloyd-Jones as "ornamental clichés" and depictions of the dogs have been incorporated in designs on bags and cushions. [21] Enid Marx’s still life painting "Still life with Staffordshire Dog and tulips" was motivated by her white Staffordshire Wally Dug.
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Composition ornament ("compo") is a mouldable thermoplastic compound, consisting of powdered chalk mixed with collagen (hide glue), resin (pine rosin) and linseed oil; worked either by hand or more usually pressed into moulds to produce decorative work.
Excess resin must be sanded off or otherwise removed before staining. [27] It has less tendency to "creep" (slide during clamping) than white glue. [28] Aliphatic resin has a similar use profile and relative ultimate strength as PVA. The two glues differ in grip characteristics before initial set, with PVAs exhibiting more slip during assembly ...