How to Make a Felt Mondrian Heart Stool Cover

2 Materials
1 Hour

If you’re looking for a Christmas gift to make someone who seemingly has everything, try this Mondrian heart seat cover! I love exploring different ways to use stencils with felt and this proves that you don’t have to just use paint as your stencil medium.

Using a stencil from Old Sign Stencils, we’re creating a Mondrian inspired heart by fusing felt. That’s right, we’re breaking out the hot knife and melting it in place.


As a former fashion designer, I’ve always loved Yves St. Laurent’s Mondrian dress. It’s based on the abstract paintings Piet Mondrian is most famously known for with it’s signature primary coloured red, blue and yellow squares and rectangles.

The influence of Mondrian’s work extends well beyond art and fashion and has influenced furniture too. And now we’re reinterpreting it in felt as a seat cover for this antique glass ball claw foot piano stool.

We found the piano stool at a yard sale and ending up paying very little because one of the spindles was broken. We’ve been using it as a plant stand ever since but it’s time for an little update!

Watch This Video!

Sometimes you just have to watch a craft unfold to understand a new technique and this is one of those times, so be sure to watch our YouTube video (and subscribe)!


Start by measuring the top of the stool to determine the diameter.

Measure half the distance on a protractor. In our case, that’s 7″. Draw a circle onto the brown paper.

Use the grid ruler to add on 1/4″ seam allowance and cut the circle out.

Fold circle in half to centre the stencil. Then trace around the heart stencil.

Add 1/4″ around the interior of the circle. Then fold the circle keeping parallel and perpendicular to the centre fold. This will help with the grid pattern. Create 1/4″ grid around each shape.

After the grid is done, scan it into a computer to create the pattern (if you only have 8 1/2″ x 11″ paper, you will need to piece it together.

Decide what colour you want to make each piece and label the pattern pieces accordingly.

Trace Pieces

Use a pair of curved scissors to cut out the interior of the heart.

Cut all but one piece. Leaving one piece intact makes it less fragile for tracing.

Using the chalk pencil, trace around interior and exterior lines of the heart onto the black felt. I use a weight right over the piece not cut to hold it in place still while I trace.

Cut Felt

This pack of 6″ felt square from the dollar store is what we use to fill in the felt appliqué. Pull out the red, blue, white and yellow squares.

Again, use a mechanical fabric pencil or chalk pencil to trace around the pattern pieces cut from the interior of the heart. I love this mechanical chalk pencil because it gives me a thin, sharp line.

Tools to Cut

I’m using a stencil burner to cut the felt which does double duty to fuse each oolour to the black heart! I don’t know what dollar store felt is made of, but many synthetic felts are made from recycled plastic water bottles. For that reason, please do this is a well ventilated area.

If you’d rather not use a stencil burner, there are other options you can read about on our blog (link below where you see our logo).

Felt Cutting Technique

This technique is best explained on the video, so watch it for a better understanding of how this works.

Plug in the stencil burner and allow to heat up according to directions. Place a piece of glass on your work surface. You can use a piece of glass from a picture frame for this.

Be sure to use a wooden ruler with a metal edge. The metal edge will guide the burner and the wood will not heat up as you hold the ruler.

After tracing the piece, cut around it on at least 3 sides, leaving some allowance. Position it onto the black felt so it lines up with the chalk lines underneath. As shown on the video, you can use a pin to help position each corner and check for accurate placement.

Position the ruler with the metal edge out. Bring the tip of the stencil burner to the beginning of the line and touch it against the metal edge. Lower it lightly onto the felt and drag it along the line until you are at the other end. Leave the ruler in position, hold it down and give a tug on the felt to see if it easily separates. If not, go back in with the burner ensuring you are up against the metal.


You can also use the curved scissor or a craft knife to coax apart some of the stubborn threads that don’t want to separate.

Rotate your work. When you position the ruler, it should always be placed on the inside of the piece you’re cutting. This will give a flawlessly straight line.

I find that free handing the curves can sometimes result in a wobbly line. As shown on the video, you can also use the straight edge to guide the curved lines. This may take some practice.

After lifting the piece, ensure your corners are right to the edge. I missed the lower left corner, so put the rule back on and completed the line.

Reveal the Pattern

Now pull away the edges of the felt leaving your fused piece of felt on the black.


While you work, ensure that you are cutting on top of the glass.

After finishing the second last piece, don’t forget to cut the one piece you left at the beginning to stabilize the heart grid to fill in that last space.

The beauty of this technique is that the pieces are now fused to the background. No need for pins for the next step.

If the chalk has faded, use the stencil to re-trace the perimeter and cut out the heart.

Seat Cover

Now use the original template to cut the circle out of the grey industrial felt.

To attach the heart to the grey felt, I’m going to topstitch it on. I don’t want to use any ‘ol regular thread and detract from the colours so instead, I’m using invisible tread.

Using a long stitch length, stitch close to the edge around the perimeter of all the coloured pieces to attach. If desired, you can stitch around the outside of the black heart also (I didn’t do that).

Punch Holes

Check out our post (below where you see our logo) for more info on how to calculate and cut the gusset. First, chalk a 1/4″ line along one long edge of the gusset first to represent the seam allowance to guide you as you punch.

Use a punch tool, such as the one shown below, to create holes at 1/2″ intervals around both the circle and along one long edge of the gusset.

Once all the punching is complete, you can stitch it together however you like. However, I chose to blanket stitch around the entire edge to bring the two pieces together. Start by placing the gusset behind the circle and clipping to hold. Skipping the first two holes on the gusset, blanket stitch from left to right around the circle until back to the beginning. Overlap at the back and stitch through all layers. See the video for how to do the blanket stitch.

I love how the lime green yarn looks with the grey felt.

Since the holes are pre-punched, this is something you easily can do while watching TV. Finally, a chance to relax :).

Before and After

Before our felt applique transformation, the top of the vintage wood piano stool is looking a little worse for wear. So set the new felt stool cover onto the stool and enjoy the updated look!

If you look closely at the reflection in the mosaic mirror, you can see last year’s colourful Christmas projects: our Christmas stocking DIY, Christmas Sleigh Decor and Gnome DIY (using the grey same felt)! You'll find links to all these projects on our blog.

I don’t often gush over our upcycles, but I have to admit, I heart the Mondrian heart!

If you have bar stools, imagine how cool a whole row of them would be covered in felt! You could even add padding if you wish.

'Tis the Season to Crochet for a Cure

If you have someone on your Christmas list who loves to crochet (or that person is you), you're in luck because we just opened up a new pattern shop and we’re donating 100% of our proceeds to Alzheimer’s.

You’ll find patterns, like our signature Kayla Pillow, Air Planter Pods and Tooth Fairy Pillow (shown below), available to purchase as a donation to our Alzheimer’s fundraiser.

Come visit us to  gift a pattern; with 100% going to charity, it’s a win-win!

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Happy crafting!

Suggested materials:

  • Felt   (Dollar store)
  • Yarn   (Thrift store)

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

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