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You can caste epoxy on saltwater. It floats on a saturated solution of saltwater. It cures completely in less than 48 hours. There is no cloudiness at all, no bubbles, and it is very strong.
Specifically, I used Easy Cast Clear Casting Epoxy. Other casting epoxies will probably work just as well. I don't know. All I know is that this one does.
Example: creating walls for a ballast tank...
I took my cylinder, sealed off one end, filled it up to the position for the first wall with saltwater.
I mixed the casting epoxy as
For my needs, this resulted in a ballast tank wall 1/4" thick.
I poured it carefully on top of the saltwater and it floats.
48 hours later, the first wall is done.
Because you are casting on water rather than a hard surface, your casting has no scratches or imperfections.
Repeat the process for the second wall.
Another benefit is that the epoxy grips the polycarbonate very tightly.
.
Specifically, I used Easy Cast Clear Casting Epoxy. Other casting epoxies will probably work just as well. I don't know. All I know is that this one does.
Example: creating walls for a ballast tank...
I took my cylinder, sealed off one end, filled it up to the position for the first wall with saltwater.
I mixed the casting epoxy as
16.20 grams Resin
13.50 grams Hardener
13.50 grams Hardener
For my needs, this resulted in a ballast tank wall 1/4" thick.
I poured it carefully on top of the saltwater and it floats.
48 hours later, the first wall is done.
Because you are casting on water rather than a hard surface, your casting has no scratches or imperfections.
Repeat the process for the second wall.
Another benefit is that the epoxy grips the polycarbonate very tightly.
.
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