I once read somewhere about a common household chemical that disolves CA. The comment
was in the context of removing it from your fingers. I have some CA residue on a wing
I need to remove. Is there any safe chemical that will do it?
-Ben
Tord wrote:
>
> A short rundown:
>
> White glues (orginally based on milk, now made
> from PVA - a plastic) are excellent on foam, wood
> and paper. Hard to sand smooth. Resilient joints.
> Perfect for applying balsa to foam cores, et cetera.
> Slow drying. Usually fuel-proof. Some variants are
> water-proof, some are less so! All can be washed away
> with water when fresh!
>
> If applied sparingly it can be used as a non-dangerous
> replacement for CA.
>
> CA attaches to almost anything - soaks into joints
> very well and is ideal for gluing odd stuff like steel,
> glass and some plastics. Very strong, but brittle. Very
> hard when dry, so almost impossible to sand smooth.
> Dries fast, or very fast. Many health hazards involved -
> are you prone to allergies keep far away! Use good
> ventilation! Can result in fatal allergic shock! Can't
> be washed away very successfully!
>
> Fuel-proof, but can dissolve to nothing in humidity I've
> been told. It goes solid in the presence of humidity - so tight
> bottles are absolutely necessary. But too much humidity
> and it might go bad after long exposure)!
>
> Rubber based glues - petrol solved (like Goo): Excellent
> for EPP foam, good for plastic-wood joints, easy to
> apply (used sparingly it can be used to make covering
> attach to EPP foam). Resilent joints, not very fuelproof!
> The usual dangers with solvents apply!
>
> Rubber based glues - water-soluble: excellent for glueing
> styrofoam pieces, or balsa skinning to styrofoam. Not the
> strongest of glues, but can be used as a barrier when gluing
> EPP to styrofoam: Coat styro with thin layer of this glue.
> Let dry, completely. Apply petrol-solved rubber glue to
> the EPP, as that glue sticks much better, and when almost
> dry press together! Can be used as base for tape on Zagis,
> but 3M77 is easier to handle.
>
> Rubber-based 3M77: Spray glue, that gets tackier when heated.
> excellent for various uses, but sticks to everything except
> teflon, so use with care! Styrosafe, wood safe, metal safe,
> and so on. Solvent mild, but still a solvent.
> Use with great care in well ventilated areas - sticks to
> floor very well (remove with petrol or white spirit).
>
> Excellent for foam. Easy to use, but VERY expensive!
>
> Aliphatic resin: Behaves very much like white glue, but sands
> much better. My favourite. Wash away with water before it is
> dry, largely non-toxic. Excists in various forms, some behave
> a bit like CA, but takes longer to dry. No great allergy concerns.
>
> Hot glue: Plastic based, heat melts the plastic, so it is
> ecellent for joints that might have to be 'rewelded' after
> a while. Mixes excellently with wood, styro, metal, epoxy, EPP.
> Not the strongest - quite visible joints (like welds). Few
> health concerns except that you might burn yourself on the
> glue gun, or on the melted glue! Water-proof, ideal for
> tacking wires to bulkheads in wooden fuselages, securing
> CF rods and wooden spars to EPP. Not very neat! Hard to sand!
>
> Epoxy: Various sorts and speeds excist, with varying applications,
> but generally ideal for highload areas, and is both fuel and
> heat-proof. Used to make CF rods, attach glass cloth to
> fuselages (attach the weave with a little 3M77 and then use
> epoxy - but alphatic resin can auccessfully be used for attaching
> glass cloth to wood). Typical areas: wing joiners, fire walls,
> landing gears, Styro-EPP joints. Doesn't sand to easily!
> Great health concerns - people who use it professionally often
> have to change jobs after a while, and people can develope
> fatal allergic reactions from any kind of epoxy! Handle with
> care, use in well-ventilated areas! When dry pretty harmless -
> which CA isn't!
>
>
> Tord,
> Sweden
>
> --
> If reply difficulties - use [EMAIL PROTECTED]
>
> Tord S. Eriksson, Ovralidsg.25:5, S-422 47 Hisings Backa, Sweden
>
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