Fishbowl Fortress

thingiverse

Keep cats out of the fishbowl with this stylized lid! The crenelated ramparts discourage snooping felines. The play in the collar around the lid makes it hard for cats to lift it off (it has to be roughly centered to remove it, which requires more dexterity than most cats have), and the "fortress" facings on either side limit the angle of removal. The idea is that humans can easily lift it off the top, but cats will have to push or pry it from beneath, and will not have the leverage combined with the dexterity to remove it. The towers protrude enough above the top of the structure that flat objects like books can be safely placed on top of the item without cutting off the air supply for the fish. Instructions lasercut all the pieces from 3(ish)mm acrylic. There's some play here (sorry, I didn't make this configurable), so the material works up to about 3.3mm. bond the "lid" together using the two square pieces and the four struts arranged diagonally. The grate on the lid is the top and the big hole is on the bottom. bond the lid to the two upright castle-looking thingies. This is very tight even if the materials match, so you may need to (gently!) hammer them together to get them to match up. clamp and wait as directed for your bond directions require.