Printable mold for concrete flower pot

thingiverse

This is a concrete flower pot that sits in a printed basket thingy. The design is a total rip-off of the La Morena flower pot by SHIFT based on pictures found on the internet. It's cast in a printed mold that is reusable to make many pots. The pot is 130mm tall and 130mm wide, but scale it to whatever size you want. Print four of the inner and outer mold parts, print the outer upside down. PLA, 2 perimeters and 10% infill worked well for me. Lightly sand any imperfections. Close the mold with wire, string, zipties or whatever is at hand. I used eight wooden barbecue pins as alignment pins but anything with a diameter of 3.5mm will work. The inner mold could be lubricated with petroleum gel to make release easier, but it worked for me without anything. I added a small piece of tape on top of the inner mold pieces to keep them together. Mix concrete and start pouring it into the mold. Put something like a screw into an impact drill and run it against the table to vibrate the concrete down and get air bubbles out. This mold probably won't fill well without vibrating. Smooth off the top and wait three days. Don't just stand there and wait, do something else for goodness' sake. One day later when patience has run out, start opening the mold even though the concrete isn't fully set. Remove the wire/string and carefully pry the outer mold parts off. Put a suitable screw in one of the holes in the bottom of the inner mold and use a hammer to slowly pull the piece out. Repeat for the other three pieces. Print one base and twelve fingers and assemble the basket with a tiny drop of superglue in each joint. Then put the pot in the basket, or else it gets the hose again. Enjoy. 2019-10-03 Added a 2-piece outer mold Outer_mold_3.stl