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I have been playing with Pentominoes for more than 30 years and I never thought about Quadrominoes, so here goes.

You can either use alphabet blocks like what I did on the Pentominoes Instructable
http://tinyurl.com/5cs7ec
or you can buy plain wooden cubes which come in various sizes. Or buy a square stick available at lumber yards or craft stores and cut your own. The important part is that the cubes are are uniformly the same size.

You will need 64 cubes or if you start with a stick, the equivalent of 64 cubes.

You will need glue and rubber bands. Paint is optional but fun.

Step 1: Creating the Pieces

There are eight 3-D shapes that can be made from four cubes. Left, Corner, Right, L-shaped, Square, I-shaped, T-shaped and Zig-zag. Eight pieces times four cubes each is 32 cubes which is OK but when you double that and get 64 cubes, you can make a 4x4x4 cube plus various other shapes.

Make two of each of these shapes for a total of 16 pieces.

Glue the cubes into these shapes and user rubberbands to hold them together until dry.

Step 2: Optional - Paint

Paint the shapes as you see fit.

Step 3: Making Shapes

Because there are 64 cubes, there are several different shapes that can be made.

  • 4x4x4 cube
  • 2x4x8 solid rectangle
  • two 2x4x4 solid rectangles
  • four 2x2x4 solid rectangles
  • a shape I call the Cathedral

As with Pentominoes, there is no one solution to any of these shapes. Kids and adults alike enjoy playing with the pieces. Those who like puzzles will certainly be intrigued.

Enjoy.
This looks cool- I have no access to power tools of any kind- do you know where I could buy any small cubes and then glue them together to do this? Thanks!
I have used standard alphabet blocks (1.75&quot; or 4.3 cm cubed) that can usually be found in a toy store. I have found them in garage sales, but you can buy them easily online.<br> <a href="https://www.instructables.com/id/How-to-Make-your-own-Pentominoes-from-Alphabet-Blo/" rel="nofollow">https://www.instructables.com/id/How-to-Make-your-own-Pentominoes-from-Alphabet-Blo/</a><br> <br> I have also used miniature alphabet blocks that were only about 0.5&quot; (1.2 cm) cubed. Look around at a hobby, craft, or toy shops for anything cubed-shaped from wooden blocks to plastic beads. Good luck.<br>
this is great! thanks for sharing ^.^
You are very welcome.
Very, <strong>very</strong> nice! I really like this. <br/><br/>Have you found a solution for the 2x4x8 that isn't just the two 2x4x4's pushed together?<br/>
Thank you! Spouse just spent 10 minutes playing with it and proved that there is at least one other solution to the 2x4x8. I would bet that there are many, many more, just like the Pentominoes. I will leave it to you to make the set, make a 2x4x8 and post a photo!

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