Safety first. Uncured resin is toxic. Use nitrile gloves, wear a respirator when appropriate, keep the space very well ventilated, and try to keep your printing area above 73°F / 23°C.
Clean and dry fully. Wash prints in isopropyl alcohol, let them dry completely, then cure under UV light. Curing wet prints can leave that chalky white residue nobody asked for.
Assembly. Gorilla Super Glue Gel works well for fast, strong assembly.
Plastic Putty: Products like Vallejo Plastic Putty are excellent for filling thin, small gaps on plastic miniatures and models. It can be applied with a toothpick or cotton swab and easily smoothed out.
Epoxy Putties: Putties like Milliput or Magic Sculpt are two-part formulas. They offer superb control and can be sculpted or carved perfectly, making them an industry standard for miniatures.
Liquid Plastic Cement: For gaps between two plastic pieces, applying a liquid cement (such as Tamiya Extra Thin) melts the adjacent plastics together. The resulting melted plastic acts as its own gap filler.