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Shapeways only charges you for the amount of material you use. Since there's no penalty for complexity or the bounding box of your model, some products—like spectacles and jewelry— seem surprisingly inexpensive while other seem more expensive. Here are three tricks to optimize your design for the lowest-cost 3D printing.
The price of the product is calculated by each specific 3D printing material and how much of it is used. We know how much material goes into the product by measuring its volume (cm3).
Rule of thumb: less material = cheaper
Scaling down the design reduces its volume throughout the product. This makes scaling a highly effective way to change the printing cost.
When you're scaling down, make sure details stay above the minimum tolerances required by the selected material. Another thing to keep in mind is to leave fitted parts to their original size. You wouldn't want your egg cup to be good for only sparrow eggs.
3D printing is great for making objects hollow. This is where the technology really shines. Not only will you be saving on printing costs, but also on the environment as less raw material is needed to make your product.
If your 3D model has thick areas, seek ways to make them hollow. For example, a character's torso could be hollow inside with escape holes through legs.
Three things to remember when making hollow objects:
Read more: Creating hollow objects
Carving is an efficient way to bring down the price. This method, however, greatly impacts the overall look of the product. If you do so, you can turn this into an advantage by using it as a style.
Remove everything but the very essential. This golden design rule is the idea behind carving. Punch holes, turn solid surfaces into mesh, use pillars instead of walls, and so on.
Keep in mind that carving can sometimes make the product more fragile and think about the forces your product has to withstand to keep structures strong enough. Check out this handy tutorial from Michael Williams.
Each material has its own minimum and maximum requirements. And you'll find all the details in the Shapeways Materials Portfolio.
If you have unanswered questions, please contact us. We're always happy to help.