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Scratchbuilders!: Armor/AFV
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Transparant Resin
GeneralFailure
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European Union
Joined: February 15, 2002
KitMaker: 2,289 posts
Armorama: 1,231 posts
Posted: Friday, March 01, 2002 - 12:25 AM UTC

PU versus Polyester resins
I tried several sorts of transparent resins. In the past, I tried several transparent polyester resins. Some are specially marketed to imitate water in dioramas: ponds and rivers.
Though some of these can be used to cast transparent, I was not really happy with them : they change color (sometimes a bit greenish) and often get hard very slowwwwwwwwwly.
Even after several days, the surface can still be a bit sticky.
Recently, I was advised to try a transparent Poly Urethane (PU) resin.
Though it cures slowly too, it works a lot faster thatn the polyester.

WIth all resins, it is important to note that large objects get hard (dry) faster than small objects. With slow-curing resins (most transparent), very small pieces need days/weeks to become really hard and surface-dry.

Transparent resins (all kinds) can be colored. Red and orange vehicle lights look nicer (more real) than painted ones, even if you paint them with "transparent ink". All it takes is add a (very very very small - no, even smaller !) drop of coloring agent to the resin when you mix it.