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Is shapesway charging for empty space? [message #58194] Fri, 07 December 2012 20:36 UTC Go to previous message
avatar Steps2light  is currently offline Steps2light
Messages: 11
Registered: December 2012
Go to all my models
Junior Member
I am designing a tube and according to Shapeways it is 30.4W x 11.6D x 11.6H = 333cm(cubed).

The thickness of the tube is 2mm.

So this tube is hollow which would give me a Volume of 14.5cm(cubed).

Shapeways estimate: $8 x 333 = $2664

My estimate: $8 x 14.5 = $166

For stainless steel at $8 this is quite a difference.

Seems your equations are based on outside parameter only? Is this automated computer error or is this just how the 3D printing machine works?

Why is the price for a solid tube the same for a hollow tube???

Shouldn't you be charged by material used not for air space? I am using less material so doesn't the 3D printer finish quicker? OR does it not matter with the 3D printer because is takes the same amount of time to create a hollow or solid object?

Also I am being charged by the widest dimension which is 11.6D...my part only has the Diameter for 20% of the part....the rest of the part is at 6cm D. So the volume of the part is charged not by actual material but the outer most dimension?

or am I not creating the object correctly for the computer to pick up the hollow shape?

Just would like to know how the machine works so I can create with it. But at this juncture this makes my project undo-able otherwise I would be ordering 10 right now.

Thanks

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