Concrete-Look Triangle Block Planters

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by Angela Son, A.C. Moore Craftologist

Concrete-Look Triangle Block Planters

It'’s easy to see from any angle that this concrete-look planter is one of a kind. Bring the outdoors in, and have a little bit of fun DIY-ing this triangle block planter.

It's not too hard to share your finished projects! Post to #ACMooreInspired

Project Details

  • Level:beginner
  • Time:2 hours + dry time

Project Instructions

  • 1
    Instructions are for a 6" triangle planter.

    Mold:
    Step A: Draw a triangle on the cardboard, and then draw a 5”" line from each corner, creating an open square on each side of the triangle. Connect the lines of the open square. You should now have a square at all three sides, which will be the walls of your mold.
    Step B: Cut out the entire mold with a X-ACTO knife and ruler. To make perforated lines around the original triangle, cut along the lines but don’'t cut all the way through the cardboard.
    Step C: Turn the cardboard upside down and cover it with packing tape to make the mold easier to remove from the plaster. Stand the squares upright to form a triangular block. Tape at every edge and corner to secure shape.
  • 2
    Plaster:
    Step A: Make sure to follow the directions on the plaster of Paris package. Pour about 1"” of plaster into the mold, and then put a plastic bottle in the center. Continue to fill mold until you have about ½" or more of space left. Tip: Tap the mold so that the plaster evens out. Let dry.
    Step B: Once it’s completely dry, remove from mold using a X-ACTO knife to cut along the edges of the wall -- the mold should easily come off. Remove the plastic bottle and then use the X-ACTO knife to even out the top surface.
  • 3
    Paint:
    Step A: Draw triangles using a ruler and pencil. We used shades of Green, Blue and Pink to paint triangles on the sides of our planter, but you can create whatever you’'d like!

Project Details

  • Level:beginner
  • Time:2 hours + dry time

Project Supplies

  • •Plaster of Paris Dry Mix 8 oz.
  • •DecoArt Americana Acrylic Paint in Colors of Your Choice (we chose Midnight Blue, Coral Blush & Citron Green)
  • •Large Piece of Cardboard (Size Will Depend on Mold) & Plastic Bottle
  • •Daler-Rowney Simply Simmons Synthetic Acrylic and Multi Media Brush Flat Shader Size 12, Packing Tape, X-ACTO Precision Instruments No. 1 Knife & Ruler