esin Models such as the ones created by Forge World will sometimes need to be cleaned of any excess resin left over from the casting process. Occasionally, air bubbles or mould line shifts can occur during the process as well. Most of the time, these can be fixed with a little bit of two-part epoxy putty, or you may find that the imperfection is covered up by another part of the model and you don't need to do anything before you assemble it. Below are a few examples of what you might find and what you can do to fix any imperfections.

Resin moulds need a way for the resin to get into the mould, so sometimes you will see a piece of excess resin on one of the pieces. To remove larger ones, you will probably need to use a hobby saw to cut off the extra piece. However, make sure to check twice before cutting so that you're not accidentally cutting off an actual piece of the model.

On smaller pieces of excess resin, you can use hobby clippers to cut off the piece. You can then use files or sand paper to smooth down any rough edges.

If your model has any vents like the piece in the first two pictures, there will sometimes be a a very think membrane of resin there. This is easily cut off with a hobby knife. Be careful that you don't hold the model so that you cut yourself and not the piece!

The second pair of pictures shows what an air bubble look like. When resin is poured into the mould, air bubbles then try to escape through the resin. Most of the time, they will make their way to surface and disappear while the resin is still liquid. However, sometimes, they don't quite make it and you will find a small little bubble hole in your model. If that's the case, just use a small amount of two-part epoxy putty to fill in the hole and smooth it down with a sculpting tool.

Lastly, in this example, you can see what mould shift looks like. Because the moulds are flexible and the resin is liquid when it is poured in, moulds can occasionally shift, causing the two sides of the piece to be a little misaligned. Most of the time, this is easily fixed by filling the piece until the two sides are even.