What are the steps to hollow a resin print 3D model for beginners?

For beginners, hollowing a resin print 3D model involves 4 simple steps: prepare the model in slicing software, add drainage/vent holes, adjust wall thickness, and post-process to clean excess resin. Open your model in a slicer (e.g., Chitubox, Lychee Slicer) and select the "hollow" tool to remove internal material. Add 2-3 small (2-3mm) holes on less visible areas (like the base) to let uncured resin drain and air circulate. Set wall thickness to 1.5-2.5mm (2mm is a safe starting point for most resins) to balance strength and weight. After printing, rinse the inside with 90%+ isopropyl alcohol to remove leftover resin, then fully cure the model. Test a small, simple model (e.g., a cube) first to practice—this helps avoid mistakes on larger prints. Stick to slicer presets for wall thickness until you’re comfortable tweaking settings.