We’re very pleased to be running our third Concrete & Casting Contest with CHENG Concrete! There’s so much you can do with concrete and casting techniques, from building furniture to making dainty flower vases.

Enter your projects to win a Collomix Mixing Bucket, CHENG color pigment sampler, Flex 5" Variable Speed Wet Polisher, and more. If you’re in need of some inspiration, visit the CHENG Concrete project page, or Molds & Casting channel.

Want more contests? Check out Instructables' current contests here!

The Concrete and Casting Contest is closed.

Grand Prize

19 Prizes

Grand Prize (1)

One Grand Prize winner will receive:

First Prize (3)

Three First Prize winners will receive:

Second Prize (5)

Five Second Prize winners will receive:

Runner Up (10)

Ten runner up prize winners will receive an Instructables prize pack including a robot t-shirt.
How It Works

Write an Instructable

Create a new Instructable that fits the guidelines outlined in the contest description above. To be eligible, Instructables must be published between Aug 17, 2015 and Oct 12, 2015 (11:59pm PT).


Upon publishing your Instructable you'll see checkboxes for open contests. Select Concrete and Casting Contest. If you have entries currently eligible for entry, it will also show up by clicking "Enter this Contest" on the right side of this page.


Entries are accepted by Instructables staff within one business day Monday - Friday. What matters is the submission time, not acceptance time.


A panel of judges made up of Instructables staff and respected members of the community rate the finalists. The averages of the ratings determine the winners.


When the winners are decided they will be notified and announced here on the contest page.