DIY: Concrete Coasters With Decorative Inserts

DIY concrete coasters - | A piece of rainbow blogMade with concrete and cardboard inserts, these common household coasters are elevated to modern and chic conversational pieces of table decor!

Materials and tools:

  • pourable concrete mix, such as Quikrete 3000lb (used here) or 5000lb.
  • thick and glossy magazine covers, card stock, or cereal boxes for making the molds
  • corrugated cardboard for making the inserts
  • plastic containers to mix concrete, plastic bags for curing concrete
  • exacto knife or scissors, hot glue and tape for the molds
  • gloves, dust mask

apieceofrainbow-12- (10)apieceofrainbow-12- (1)apieceofrainbow-12- (3)apieceofrainbow-12- (4)Step 1: Make Molds and Decorative Accents

Start by drawing 4 inch diameter circles onto card stock – one more great use for a can of tomatoes! I love the modern graphic elements such as triangles, raindrops, strips, etc. Cut out shapes from the corrugated cardboard, arrange and glue them onto the card stock inside the circles we drew. Cut long strips of thick magazine paper at 1/4″ to 3/8″ thick. This will be the thickness of the coasters. Tape the ends together using the can as a guide, and glue them onto the card stock with hot glue.

apieceofrainbow9-30bWapieceofrainbow-12- (5)Step 2: Sift and Mix Concrete

Screen those really big chunks of aggregates out of the Quikrete 3000lb mix- a plastic nursery pot works great, and leave some small aggregates for strength. Mix the concrete following the proportions recommended on the bag, using the screened concrete as if it is the original mix. Wear dust mask and gloves when working with concrete.

Set the molds on a very flat surface, with a large sheet of plastic underneath, which is needed in the curing process. Pour the mix into the mold till it’s level with the top of the rim. Pat gently to make each coaster as level as possible.

apieceofrainbow-12- (6) Step 3: Curing Process

Let the coasters stay in the molds and cure for at least 3 days by misting them daily and wrapping them in plastic sheet. This is a very important step to ensure that the concrete hardens as much as possible so they don’t chip or break. The more moisture you can keep in the plastic wrap the better.

apieceofrainbow-12- (7)You can take the coasters out of the mold after 36 hours, because it will be hardened by then. But let it cure for another couple of days.

apieceofrainbow-12- (8)Step 4 : Final Touches

Clean the surface of the coasters. Brush the entire surface with Modpodge to protect them from moisture, stains, and to keep the inserts in place.

Attach 3 mini felt pads on the back side of each coaster to protect your table surface.

apieceofrainbow-12- (12) Time to invite some friends over and show off your cool coasters!

Can’t get enough concrete decor? How about some concrete geometric wall planters ?apieceofrainbow9-1bw Happy creating and see you next week!

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  1. Otto says

    i don’t understand how do you glue them down and they don’t rip off after hardening? :) do you put the glue in center of the papaer or go around it…. or….
    such an awesome idea with corrugated cardboard, thank you!

  2. says

    Love love love these! I was super impressed and then happy to fond more diy inspiration via the bottom photo link (for Geometric Wall Hanging Planter)! Unfortunately, it took me to an error “Nothing Found” page? ;( Inwas wondering if theres another way to view that post?.. Thanks!

  3. Amanda says

    If you use Quikrete’s Sand Topping Mix (which should be readily available at most home improvement stores that carry Quikrete products), there would be no need to filter out the gravel.

    • ananda says

      thank you amanda! i am going to play with other mixes like you mentioned! another quikrete mix i really want to try is the counter-top mix -harder to find though =)

    • ananda says

      that’s a cute idea beth! yes you can add that, perhaps wait a couple of hours so the print register better. wet cement is ok if you just do a quick print and wash hand right away, because it’s alkaline. but it won’t burn skin if done quickly. x

  4. says

    These are so cool! I love working with concrete! The first project I did with concrete was AWESOME! i absolutely loved it. I will PM you and tell you about it. Maybe you can try it and post to the site!!! Have a great weekend Ananda!

  5. says

    Those are so pretty. I love the striped one the most. I had never thought to create things with concrete. Very creative!

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