Easiest Concrete Casting Ever!

1 Hour

Use your empty cans and make the coolest concrete vessels. Cost = pennies and no fancy mold... You will have your friends saying 'what the'?! (btw, be patient; apparently I am crashing the servers on my site)
Go into your recycle bin and collect those soda and beer cans. Force out the bottom of the can with the end of a broom (easier removal later...) after cutting off the top. (full tutorial here) Make some dents and wrinkles in the can.
Quick-setting concrete mix is used here. I use RapidSet Cementall. Mix up a small quantity and be aware you need to work quickly since it sets i minutes. It should be of an easy flowing consistency.
Pour into the can and turn to coat all the sides. Continue turning to keep from settling on the bottom. It sets in minutes, be patient. Any extra can be poured into next can.
After few minutes it will 'stay put' and you can let it cure for about 1 hour. If the concrete is really thin repeat and pour another layer for reinforcement.
Once it is thicker (3mm or so) and it has cured, you can remove the can. Use caution as it is sharp. I like to use tools and rip the sides down in strips. The bottom is slightly more difficult to remove, so pulling strips work best.
TADA! The finish is super shiny and quite interesting. You can now add colour of preferred or enjoy as is. You can't get an easier mold than this. I LOVE concrete and have a lot of unique projects
Metallic paint seems so appropriate... So cool for so little effort!

Another super simple concrete project just posted: https://www.madebybarb.com/2017/08/21/faux-fossil-forest-coasters/

I just love concrete! Check out my other unique projects

Want more details about this and other DIY projects? Check out my blog post!


Have a question about this project?

3 of 18 questions
  • Heather
    on Jun 20, 2018

    Ok for coloring on this project! Wonder if useing food coloring would be look & work?

    • John Biermacher
      on Sep 27, 2019

      Food coloring would be a trial and error thing. If you were doing a bunch of these for gifts or resale, you can buy powdered cement colorings in sample sizes that would be plenty for this kind if projects.

  • Why do you bump out the bottom of the can?

    • MadeByBarb
      on Jan 3, 2019

      I tried at first without and it was next to impossible to pull out that part. I'm pretty sure it is formed in such a way that it is very strong and keeps it's shape. Bumping it out makes removal easier.

  • Jeri Walker
    on Feb 20, 2019

    You said cut slits in the top of can for easy removal but I did not see that you did that or did I miss something, if you do not cut slits in top how do you remove it????

Join the conversation

2 of 69 comments
  • Dee
    on Sep 23, 2019

    Too cute!!!

  • Ilene
    on Sep 27, 2019

    I'm all over the projects using cement. Thank you for sharing. Another thing to add to my Make For Holiday Gifts projects. Ilene

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