Spirals By Steven

Finger Jointed Tiles

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These are objects I have made using finger-jointed friction-fit tiles.  You can make all sorts of shapes with these.  Here are some models I have made of regular Platonic Solids.  The tiles are made using a tablesaw and dado blade, but a router table can also be used to cut the joints.  The trick to making friction-fit finger joints is to use a dial indicator for adjusting the fence.  A few thousandths of an inch error in either direction will cause the joint to be too tight or too loose.  Another trick I discovered is to rub the sides of the fingers with beeswax as a lubricant to join tiles that might otherwise be too tight.

These are the five Platonic Solids.  Icosahedron, Dodecahedron, Octahedron, Cube, and the Tetrahedron.

The Five Platonic Solids
5_platonic_solids.jpg

Truncated Icosahedron
truncated_icosahedron.jpg
aka "soccer ball"

There are 12 pentagons and 20 hexagons - all are finger-jointed to fit together.  The shape is a truncated icosahedron and it is a little smaller than a soccer ball.  Each tile is about 3/4" thick.  If I make another one of these, I will make the joints a little bit less tight to make the glue-up go smoother.

pattern1.JPG

The tiles pictured here are laminated in maple and walnut.  Many geometric color patterns can be made to make tiled objects look more interesting.

IMG_0029.JPG

Another pattern made with two-tone tiles.

IMG_0022.JPG

Another object made with triangular tiles.  Am I the only one crazy enough to make a square out of equilateral triangles?  :)

PICT0007.JPG

An earlier object made of triangular tiles - this time in pine.  These tiles have more fingers per inch but they were too fragile and broke easily.  I changed the frequency of the finger jointing later to make the fingers wider and more durable.

polyhedron
icosahedron.JPG
Walnut and Maple Friction-Fit Tiles.

A dodecahedron has 12 pentagonal sides.  This model substitutes 5-sided pyramids made of 60° isosceles triangles in place of each pentagon for a total of 60 sides.  Walnut and maple friction-fit.

inverted60.jpg

This is also a dodecahedron in cherry made with 5-sided pyramids except the points of the pyramids are pointed inwards making the edges of the 12 sided dodecahedron much more obvious.