Hi,
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

• Attachment: Tofty Ag Render 021b.jpg
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[Updated on: Thu, 06 September 2012 21:08 UTC]

Just an update in case this infomation is useful to anyone;
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.

[Updated on: Sat, 03 November 2012 09:12 UTC]