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=20937&th=4029#msg_20937
The cost for the model at 10cm is $ 14.70 WSF, $ 10.21 for sandstone. Which intuitively is correct, because sandstone costs 2/3 for materials, plus the surcharge to start with.

However, if I upscale exactly the same model to 20cm, using the same blender file and exporting it out the cost comparison changes.

The cost for the 20cm model is $ 69.24 WSF, and $ 71.12 for sandstone.

Is there a cost to exceeding a certain scale in sandstone?
I thought sandstone was recommended only for larger scale models?

Or is it a bug in the calculation?
Sandstone should be around $45, assuming the WSF estimate is correct.]]> TinBane 2010-11-26T00:53:22-00:00 http://www.shapeways.com/forum/index.php?t=rview&goto=20938&th=4029#msg_20938 stannum 2010-11-26T01:50:54-00:00 http://www.shapeways.com/forum/index.php?t=rview&goto=20939&th=4029#msg_20939 GHP 2010-11-26T02:13:47-00:00 http://www.shapeways.com/forum/index.php?t=rview&goto=20940&th=4029#msg_20940 I understand why the cost is different now. ]]> TinBane 2010-11-26T02:22:46-00:00 http://www.shapeways.com/forum/index.php?t=rview&goto=20941&th=4029#msg_20941
I will update the material page asap

but the deal with WSF is:

# On a White, Strong & Flexible model you will then pay the regular $1.50 per cubic cm for any model that is less than 20 cubic cm as well as a start up fee of $1.50 per model.So no change there.
# On White, Strong & Flexible model larger than this you will pay a start up fee of $1.50. You will also pay $1.50 per cubic cm for the first 20 cubic cms. Any additional cubic centimeters are only $0.75 per cubic cm.

Or you could say WSF from 75c percm3*

*plus start up costs

Cheers]]> bitstoatoms 2010-11-26T04:15:51-00:00 http://www.shapeways.com/forum/index.php?t=rview&goto=20943&th=4029#msg_20943 ).]]> Magic 2010-11-26T07:56:30-00:00 http://www.shapeways.com/forum/index.php?t=rview&goto=20947&th=4029#msg_20947 TomZ 2010-11-26T11:22:17-00:00 http://www.shapeways.com/forum/index.php?t=rview&goto=20952&th=4029#msg_20952 Magic 2010-11-26T13:13:57-00:00 http://www.shapeways.com/forum/index.php?t=rview&goto=20988&th=4029#msg_20988 Price Reduction Offer. Basically half price for centimeters beyond first 20, if the item is dense.]]> stannum 2010-11-26T18:42:42-00:00