Adhesives

White glues: Polyvinyl acetate
e.g. "Elmers" glue
	* White opaque liquid
	* Thinner: water
	* Porous materials: wood, cloth, paper
	* Setting time 1 hour, dries in 12 hr.

Yellow glues: Aliphatic resin e.g "Elmers Carpenter's" glue
	* Yellow (or tan)opaque liquid
	* Thinner: water
	* Mainly for wood, slightly stronger than white glue for wood
	* Setting time 5 min., dries in 45 min. to 2 hr.

Flex glue, Flexbond: Vinyl acrylic
	* White opaque liquid, thinner than Elmers
	* Thinner: water
	* Bonds pourous materials, will stick to non-pourous materials but may peel 
        off slipperier plastics
	* INCREDIBLY useful material, remains very flexible when dry, dries crystal 
        clear with glossy finish.
Can be used to bond porous materials, as a finishing surface, mixed with some 
paints as a colored finish, as a coating to make plastics and foams paintable.
Hint: use flexglu to paste pieces of tissue or brown paper towel to especially 
slick pastics and foams.

Hot melt glue
	* Rubber based polymer; comes as solid sticks which are melted & extruded 
from a "glue gun".
	* Sets in about 10 sec., full strenth in a couple minutes
	* Not particularly strong, but very quick.
	* Heat essential for bond; cool joint won't bond
	* Standard formulation meant for paper, cardboard, cloth; but many 
        formulations are available. It pays to get the right one
	* Good for sticking things together AND as decorative material

Construction adhesives:
   comes in tubes for caulking guns
	* PL200, Liquid Nails
		+ Wood to wood, wood to sheet goods
		+ Can somewhat dissolve foam boards
	* PL300
		+ Specifically formulated for gluing foam; doesn't dissolve surface
		+ Good for laminating foam sheets into thicker pieces.

Silicon adhesive
	* Waterproof sealer, esp. for non-porous and porous materials
	* Flexible, dries clear, also available in white
	* Absolutely UN-paintable! Pretty much nothing sticks to it when its dry.
	* Cures in about 24 hr.

"Goop"™
	* Available in various formulations, e.g. "household", "sportsman's", 
        "shoe"
	* Similar to silicon adhesive; somewhat better gluing qualities, not quite 
        as good as a sealer
	* More surface, better grip

Epoxy & epoxy putty
	* Two part adhesive, resin and catalyst, usually mixed one to one
	* Bonds almost anything to anything, virtually the strongest adhesive known, 
        waterproof
	* Excellent gap filling qualities, stronger than most materials
	* Available in numerous "timed" formulations, from 5 min. to a couple hours, 
        i.e. working time before setting. Full strength achieved overnight.
	* Waterproof, impervious to almost all chemicals, can be use for fiberglasing 
        but NOT in combination with polyester fiberglassing resin.

Super Glue, Crazy Glue
   Cyanoacrylate ester
	* Originally formulated to glue skin together; still does that very well!
	* Useful for gluing closely fitting non-porous surfaces together. Some recent 
        gel formulations also made for gluing wood.
	* Bonds almost instantly; no clamping time needed
	* Very strong if fit is very tight, but has almost NO gap filling properties. 
        If fit isn't tight, joint falls apart. The less used, the stronger the 
        joint (within reason).
	* Original formulations had no solvent. More recent versions can be disolved 
        with acetone, but aren't quite as strong or easy to use.

Polyester resin
	* Used primarily with fiberglas matting or cloth to strength coat foam, 
        mold, etc.
	* Large volumn of resin to a few drops of catalyst
	* Not compatible with epoxy resins

Urethane glue
	* Fairly new wood glue, basically low expanding urethane foam
	* Excellent gap filling abilities (up to 3/8"), extremely strong when 
        set
	* Moisure causes it to set, actually absorbing water from air or wood itself. 
        Drying time varies with humidity and porosity of materials bonded. Setting 
        time can actually be reduced by dampening pieces before gluing.
	* Very strong joint with slight ability to flex under pressure, so joint gives 
        rather than cracking under stress.
	* Glue does expand slightly as it sets, so clamp firmly until set so glue 
        doesn't push joints apart.

One-part Urethane foams; Great stuff, Touch foam
	* Similar to Urethane glue, but expands much more, so it less dense
	* Sticks practically anything to anything, but expansion may force parts 
        apart
	* Can be used to slick sheets of styrene foam together; weight until cured

Bondo: Polyesther resin and filler, uses cream hardener.