I wanted to update the planter I had in my office-- its basic and white and not of my own creation and that was going to change this month. I am really into concrete these days and it looks great on a white desk so I designed the planter to be either 3D printed or made out of concrete using a 3D printed mold. I will cover instructions for both methods below. The planter is specifically for a fake plant, and not intended to keep any real plants alive.
Step 1: What You Will Need
Step 2: 3D Printed Parts (Choose 1)
Concrete Mold (~9 hours @ 60 mm/s) - follow option 1 instructions
- Filament choice not important
- 0.2mm or greater layer height
- 10% infill (I chose fast honeycomb pattern)
- Support not required
3D Printed Planter Only (~11 hours @ 60 mm/s) - follow option 2 instructions
- Filament choice not really important
- 0.2mm layer height
- 20% infill
- Support optional
Step 3: Option 1: Finishing 3D Printed Planter
- Remove any support material if it was used.
- Start by sanding down each outer portion of the printed parts – starting with 120 and slowly progressing up to 320 (or higher if desired).
- Using a lightly damp cloth, wipe down sanded parts to remove any dust
- Apply 1-2 coats of primer.
- Lightly sand down dry primed parts with 600+ grit sandpaper.
- Using a lightly damp cloth, wipe down sanded parts to remove any dust.
- Apply 2-3 coats of paint to the planter.
- Apply 1-2 coats of clear coat.
Step 4: Option 2: Creating the Concrete Planter
Option 2: Creating the Concrete Planter
- Gather some cups of water for the concrete mix, I used slightly less than 2 solo cups of water.
- Start by mixing the water and concrete together in a bucket or container of your choice. I like to mix a full cup of concrete with a quarter cup of water and slowly add more to the mixture. 4 cups or so of concrete should be sufficient. You want the consistency to be a little more liquidy than cake batter so add the water slowly if its starting out too liquid.
- Mix thoroughly.
- Spray inside of mold with cooking spray.
- Pour concrete into mold. Be sure to fill to the top edge.
- Shake the planter gently or use an orbital sander to vibrate the sides of the mold to release any bubbles in the mold.
- I sprayed a small piece of scrap wood with cooking spray and set it on top of the hole so the base would be flat.
- Let the concrete harden over the next 48 hours.
- At this point you should break apart the plastic mold to retrieve the concrete. This can be a little tricky - I used a box cutter blade, and a few other hand tools to break apart the plastic. Try not to put too much force on the concrete as it might chip or break.
- Once your concrete planter is out you can paint or use as-is.
- Add your fake greenery of choice and enjoy!