Pour a Concrete Countertop for an Outdoor Bench

Water Cure CSA Concrete

So I pulled back the plastic and wetted the concrete for an hour while it cured.

Cast your own Concrete Countertop for a Potting Bench with a Galvanized Corrugated Metal Roof
Water curing CSA concrete when it solidifies

Remove Countertop from Form

The next day I removed the strap holding the plastic pipe in place as well as the screws from underneath.

Cast your own Concrete Countertop for a Potting Bench with a Galvanized Corrugated Metal Roof
Flip concrete form over

Marilyn came to help me flip the counter over. I removed all the screws and sides of the form and the melamine bottom of the form came free.

Cast your own Concrete Countertop for a Potting Bench with a Galvanized Corrugated Metal Roof
Remove melamine bottom from concrete form

Remove Knockouts

The plastic pipe came out fairly easily with some tapping from underneath.

Cast your own Concrete Countertop for a Potting Bench with a Galvanized Corrugated Metal Roof
Remove plastic pipe that formed the waste shoot

To remove the plywood disc I drilled a hole in it and made a cut with a jig saw. This allowed the sided to come away from the concrete so I could tap the disc free.

Cast your own Concrete Countertop for a Potting Bench with a Galvanized Corrugated Metal Roof
Remove sink hole form blank

I used a small block of concrete left over from a previous experiment to smooth the rough edges along the bottom of the countertop.

Cast your own Concrete Countertop for a Potting Bench with a Galvanized Corrugated Metal Roof
Smooth rough concrete edges

DIY Stainless Steel Sink

I cut a hole in the bottom of this stainless steel bowl to add a sink trap. A bar sink would be a good option as well for this potting bench.

Cast your own Concrete Countertop for a Potting Bench with a Galvanized Corrugated Metal Roof
Add drain to steel bowl

And really, this bench would make a good outdoor food prep station beside a barbecue.


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