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Springett Inspired Exploration Using SketchUp

Been playing with Google's free 3D modeling program SketchUp. Was given David Springett's book "Woodturning Full Circle" - that got my head spinning - and then making some virtual 3D models of some of what I THINK he's playing with - Streptohedrons. (Femispheres are one type of streptohedron). This is a VERY interesting area of woodturning to explore - with unlimited possibilities. The mental leap needed to understand these things is to make the shift from thinking of turnings in terms of Single Axis Symetry and Profiles - to - Cross Sections and Twists.

Here's the link to the "Streptohedron Table of Content from which you can get to Equilaticons, Isocones, Femispheres, Pentacons and Hexacon (that's as far as I've gottem so far).

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If you want to occassionally escape from Round & Brown, have a look. As always, questions, comments and constructive criticism are welcomed.

Reply to
charlie b
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On Tue, 3 Jan 2012 7:41:29 -0600, charlie b wrote (in message ):

Reply to
tom koehler

No cutting the parts apart required. The use of a "paper glue joint" - glue on both faces to be joined with a piece of newspaper between them, also with some glue on it, creates a plane at the joint that holds for turning - but can be opened up by starting with a ultility knife to begin opening the joint, then using a kitchen knife to open the joint of completely. Leaves a little paper on each joint face that's easy to sand off.

Reply to
charlie b

On Tue, 3 Jan 2012 21:41:38 -0600, charlie b wrote (in message ):

Thanks. That's what I was trying to say, just did not explain what I meant. The biggest trick, then, is getting the symmetry just right, so that when the parts are reassembled 90 degrees apart, they still match up well. Maybe a little adjusting the fit-up with some sandpaper? tom koehler

Reply to
tom koehler

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