Aquarium Decoration - Textured Rock Cave - Medium

thingiverse

Custom Rock shaped cave with two entries for fish, shrimp or reptiles. Dimensions are 20cm X 12cm X 7cm. This model is designed with walls that are just 2mm thick, intended to be printed with 100% infill and no supports at all; its thin walls make it unsuitable for significant re-sizing. A bit of filament sag may occur due to the somewhat flat roof, but this model will print successfully without any supports whatsoever. PLA and PETG are both denser than freshwater, so 100% infill will naturally sink to the bottom of the tank. Regarding safety and longevity: Both PLA and PETG plastics are generally considered food safe, but some dyes and additives might not be, so I use natural color to play it safe. Decorations are painted with non-toxic acrylics and coated with plasti-dip (also generally considered aquarium safe) to seal the paint. I recommend printing in PETG for the long term since PLA is biodegradable and will break down when exposed to heat and water, although it will still last for over a year from all accounts I've read. Disclaimer: I'm just a hobbyist, and everything I've stated is based on my personal experience and Google search results; I recommend doing your own research and consulting professionals whenever possible.