Monthly Archives: January 2014

N Scale Pontoon Boat

N pontoon

Now available on Shapeways: N scale Pontoon Boat
It comes in two variations, one with railing detail and one without. The railing on the one without railing detail can be modeled graphically by printing out the railing as artwork and attaching it to the model.

Download printable graphics here (includes railing in four colors and floor carpeting in two shades of gray).

Shapeways Design Rule Definitions

Since the Shapeways site still doesn’t define in detail terms like “Supported Wire,” I thought I’d post some definitions they gave to me upon request. This should help other designers frustrated by rejected designs.

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Detail vs Wall
Features protruding from a surface may be less than the minimum thickness for wall/wires provided they are not more than twice as tall as they are thick. 2:1 Height:Thickness. i.e a 0.32mm thick feature is allowed, provided it is not taller than 0.64mm tall

Free Wall
connected on one side to another part while free on the other side

Free Wire
Wire connected on one side to another part while free on the other side

Supported Wall
connected on both ends and retrieving structural strength from both connections

Supported Wire
Wire connected on both ends and retrieving structural strength from both connections must be less than 60:1 Length:thickness

Supporting Wire
A free wire supporting which is on the free end connected to an other part from which the wire does not gain strength

Wire vs Wall
A feature with a rectangular cross section will be considered a wall provided the long axis is 5 times the shorter axis. i.e. a 0.7mm thick feature will be a wall if it is at least 3.5mm wide.
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