- Design a Product
In general, minimum wall varies based on features
The more stress is put on your object, the thicker it has to be. While the minimum wall of Frosted Ultra Detail is 0.3mm and Frosted Detail is 0.5mm, this does not mean all parts of your structure will be strong enough at those points. For most designs, we recommend designing thicker walls as 0.3mm walls remain very, very brittle. Wires that support objects (like trees or lollipops), for instance, need to be thickened so they don’t snap. For more info on the ratios to use, read the next few tips!
Parts that jut out are more likely to break during shipping
To protect your pieces, sometimes it is helpful to build a cage around your object. This is especially true for thin wires that jut out (like the post on a model ship), the thinner the structure the more brittle the part. However, please note that a cage might cause some leftover support material on your part, meaning your part might be slightly yellow. If you plan on painting your model, we recommend cleaning off any excess wax before painting because the wax prevents paint from sticking. Alternatively, you can thicken the wires that jut out to 0.6-0.8mm thick.
How to prevent walls from warping
Walls that are long and thin tend to break or warp during shipping due to the heat at transport. For models with walls that are 0.3-0.6mm thick, please try to keep these walls under 30x30mm in size. For walls of 0.6mm thickness, try to keep your walls under 50x50mm in size.
How to design thin, unsupported walls
This pictures shows models made 0.6mm thick sheets (top), and 0.3mm thick sheets (bottom). You can see both models started to warp once the walls get big enough. Based on these tests, we conclude that for models in the 0.3-0.6mm wall thickness range, to keep free standing walls under 30x30mm. For walls of 0.6mm thickness, try to keep your free standing walls under 50x50mm.
Be sure to design big enough escape holes for hollow parts
If your escape holes (i.e., holes in hollow parts) are not big enough, there may be support wax that remains inside after we finish cleaning your product. The support wax has a consisteny similar to melting candle wax. Think of it this way: if my model were filled with melted candle wax, would the wax flow through the escape holes? If not, you should widen the holes. If you don't, the prints will turn out frostier than normal because some of the wax didn't drain. For most models we recommend two holes of 2mm diameter each. Models with smaller holes may be rejected since it will be difficult getting the support material out, and the material may ooze out slowly over time. Having your holes at the opposite ends of the model (one on top, one on bottom) will also help the wax to escape faster and cleaner.