I always have a spray bottle filled with water which I spray onto the paper and model. Keeping everything wet extends sanding life, keeps away any dust and improves finish.
Then I do the whole thing over again with 600 grit making sure you use plenty of clean water to minimize friction between paper and plastic. Sand the joint area down to below the height of either side, this makes room for the epoxy.
Next take a very small amount of epoxy and fill in the gap you made with the sandpaper. Level it out and add the details if any, that are missing. Once dry guess what you get to do again! Thats right Sanding! Your not done until blood is coming from sanded finger tips, thats the price of a smooth finish. Once its baby bottom smooth its time for a fine coat of gesso and then paint. I used my airbrush to paint his now fully attached tail.
If you have any questions feel free to comment or email them through to me. Oh here is some Thor again because who doesn't love the god of thunder.
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