http://www.shapeways.com/forum/index.php Shapeways: Bring your creativity to life in 3D http://www.shapeways.com/forum/index.php?t=rview&goto=53708&th=10775#msg_53708 I am planning an order of quite a large object in silver that needs to be as dimensionally accurate as possible.
I am wondering how to take account of the expected shrinkage of the object from casting:
Should i scale up the model by about 2% (which is the deviation measured from previous printed objects),
or will the shapeways operators make the necessary changes to the model to ensure it's final dimensional accuracy?

I really want to get this right first time due to ithe protibitive cost.

The model is around 28x28x109mm

]]> Tofty 2012-09-06T21:05:16-00:00 http://www.shapeways.com/forum/index.php?t=rview&goto=54249&th=10775#msg_54249 Tofty 2012-09-19T14:45:52-00:00 http://www.shapeways.com/forum/index.php?t=rview&goto=54251&th=10775#msg_54251 BillBedford 2012-09-19T15:54:55-00:00 http://www.shapeways.com/forum/index.php?t=rview&goto=54256&th=10775#msg_54256 http://www.shapeways.com/materials/silver-design-guidelines. Good luck with getting it printed.]]> Fredd 2012-09-19T17:37:56-00:00 http://www.shapeways.com/forum/index.php?t=rview&goto=56252&th=10775#msg_56252 I went ahead and ordered the above model in silver with a 2% increase in scale and this factor turned out to be pretty much perfect.
All internal dimensions remained within telorances and the threads were all very good.

Here are a few pictures of the finished light:













Thanks Shapeways.]]> Tofty 2012-11-03T09:11:22-00:00