Making wooden dice with the pantograph

I used my 3D pantograph to make the holes in the dice for the video collaboration with Steve Ramsey.

In the video, I round the corners and edges with a 1/2" roundover. But I started thinking about rounding the dice to be like one of those dice with the really rounded corners that roll so well. I came up with a neat method using my pantograph, so I thought I'd cover that in more detail.


The dice all start as cubes about 6.5 cm (2.5") along each edge.


I made a template that had holes for all the positions that the dots of the die could be in. To make the holes in the dice in the right place is just a matter of poking the follower pin in the appropriate holes.

The intent for the video had been to use an overly complicated way to do it. Though complicated, this method actually turned out to be very effective at repeatably cutting the holes in the right positions.


For the classic round wooden dice shape, the dice is actually more of a sphere with four sides cut flat. Each face ends up circular in shape, with the wood coming to the face at close to 45 degrees.

So thinking about this a bit, I realized, I could reuse my pantograph circles technique to trace a circle around the face with a 45-degree bevel cutting bit. I use a piece of wood that rotates around the center of my templates to guide the follower pin around a circle twice as large as the one that the router needs to trace.

The router bit needs to be one without a guide bearing, I cut that off.


The technique does require working fairly precisely to make sure all the edges line up...


...but a bit of sanding removes any imperfections.


Looking face on at a corner of the resulting dice, you can see how the outline is very close to circular. This sort of dice rolls very nicely, especially if you toss it just right.

And that's all there's to it. Yet another trick with the 3D router pantograph


See also:


Cutting circles
with the pantograph

Making a
crokinole board

Carving a violin scroll

Making wooden
assembly puzzles


April fools video
collaboration

Back to the 3D router pantograph