The Fisher Cube is a common mod but I have recorded mine here.

The first thing I had to decide was whether to use an octagonal barrel or a cube as the base. I had a couple of spare octagonal barrels and a spare Rubik's cube. I was happier with the turning qualities of the cube and also I could use the offcuts to make the corner extensions.

Using my trusty Junior Hacksaw I cut the pieces. On the right of the sandpaper (A) is one of the offcuts which has been filed down to the correct size.
Before I cut the edge cubies I glued in a little plate (B) to support the sides during cutting and to help create a container for the filler. The filler was Milliput and although it was scraped with a piece of wet plastic card to be as flat as possible, it still needed sanding (C). To minimise the weight of the puzzle (110g stickered) I fitted a small ABS piece into each cubie to create a cavity which was not filled.



When all the pieces are filled we have the octagon barrel.


The offcuts were all too large. I filed one to size by hand but used a bench grinder to complete the other eleven.


Now they are glued on with superglue. When glueing parts on to puzzles like this I always make a little hinge with sticky tape to set the alignment and keep it during glueing. Bend the hinge back to apply the glue, close the hinge and hey presto.


After more filling, sanding and spraying - black satin acrylic -the puzzle is ready for stickering.


I used scissor-cut vinyl stickers in the standard colours.


It turns nicely - but the inside edges need a little atttention - there is a little residue from the watery scraping of the Milliput.