Quote Originally Posted by curious aardvark View Post
given that a model could be printed hollow or with any number of shells and % infill.
Surely it would make more sense to charge based on plastic used and time to print ?
The only way i can see to do it is to work out the most it will cost and charge that.
But setting a cost per cm3 is the same regardless of how much infill you use. The print cost will increase at a higher volume and decrease at a lower volume; the cost per cm3 is static.

I have gotten quite a bit of work through 3D Hubs. Ultimately the clients got hold of me via my website and we could get to the details like infill. If not then I calculate on the solid part.