Side Table / Stool

Side Table / Stool

Materials + Supplies:
    •    Rubber Gloves, Safety Glasses, Dust Mask

    •    10" Concrete Form Tube
    •    Shelf Liner
    •    Spray Adhesive
    •    11"x11" Plastic Sheet  
    •    Base Surface
    •    Duct Tape 
    •    Mixing Containers
    •    25 lbs. ShapeCrete

    •    Hand Saw
    •    Utility Knife
    •    Ruler / Square
    •    Hot Glue Gun
    •    100% Silicone Caulk and Caulking Gun
    •    CHENG Corner and Seam Shaping Tool
    •    Razor Blade
    •    Trowel 
    •    Diamond Hand Sanding Pad

Size: 18" x 10"
Color: Grey and Blue
Technique: Hand Packed

Side Table / Stool

A concrete form tube is almost all you need to make this side stool. The finished piece is hollow and weighs about 20-25 lbs. depending on the thickness.

Step 1: Cut Down Concrete Form Tube

  • Measure down the form tube and make marks with a pen at 18".
  • Tape around the tube to connect the marks. The tape will act as a guide, making it easier to cut the tube straight.
  • Cut the tube to size with a hand saw, utility knife, or band saw.


Step 2: Glue Shelf Liner in Place

This is the trickiest part of the project, but it's optional. Gluing a plastic shelf liner inside the tube will give the finished piece a texture. The shelf liner here is just over 18" in width, so it fits perfectly inside the 18" tall form tube.

  • Tape the shelf liner in place, working your way around the inside of the tube and making sure that the liner is tight against the inside.
  • Make a mark on the liner where it meets the starting point.
  • Cut the liner to length with a utility knife, using a ruler as a guide.
  • Lay down some contact paper and spray the non-textured side of the shelf liner with spray adhesive. Follow the directions on the adhesive and spray the interior of the tube, then wait 5-10 minutes for the adhesive to get tacky.
  • Carefully place the liner inside the tube and press it into place.
  • Trim away excess with a utility knife.


Step 3: Make the Base and Glue Down the Tube

Make the base for the form tube using something flat, like a scrap piece of plywood, or in this case, a terracotta tile that was laying around. Tape a piece of plastic (11"x11") to the tile. The plastic will make it easy to remove from the piece later.

  • Tape the plastic down on the tile.
  • Place the form tube in the center of the tile.
  • Run a bead of hot glue around the base of the form tube to hold it in place.


Step 4: Silicone the Inside Edge

This step is also optional, but it will create a nice round-over on the top edge. If you skip this step, the top will have some sharp edges that need to be sanded down with diamond hand pads.

  • Run a bead of caulk around the bottom inside edge of the tube.
  • Tool the caulk with a seam shaping tool (an acrylic rod cut at an angle).
  • Scrape up the excess silicone with a razor blade.
  • Wait for the silicone to cure and then pull up the excess silicone from the sides of the tube.
  • After the silicone has fully cured, clean out the form with denatured alcohol.

Now the form is ready to pack.


Step 5: Mix ShapeCrete

A project this size will take about 25 lbs. of mix, at about 5/8" - 3/4" thick. It helps to mix this amount in a 5-gallon bucket or a concrete mixing tub.

Mix ShapeCrete to a Clay-Like Consistency.

  • Add half the water to the tub.
  • Add the dry mix with the dry pigment already blended in (optional).
  • Blend thoroughly by hand or with a paddle mixer. The mix should hang vertically when it's the right consistency. Adjust water content as needed.

Always wear a rubber gloves, safety glasses, and a dust mask when mixing.


Step 6: Pack the Form

  • Begin by packing the bottom of the form to an even thickness. Press the mix into the edges of the form so you don't leave air bubbles.
  • Gradually pack the mix up the walls of the form, turning it as you go along.

  • If the mix is slumping down, it may be too wet. Try pressing thinner pads into the form and then coming back with a second layer to thicken it up.

  • When you get to the top of the form, smooth the top edge with a trowel or putty knife.

Cover with plastic and let it cure for 24-48 hours before removing it from the form.


Step 7: Demold

Stripping the form is easy.

  • Remove the tape from the tile so the plastic is loose.
  • Flip the piece over and peel away the plastic.
  • Use a utility knife to carefully slice into the tube and gradually peel it away. Be careful not to cut too deep into the piece.
  • Sand any jagged edges with diamond hand pads, files, or coarse sandpaper.


The Finished Piece:

Concrete form tubes are really versatile and come in a huge range of sizes so they can be used to make a lot of different (cylindrical) things. The tubes can be packed to form planters, waste bin surrounds, small containers, or short side tables like this project.


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