And, here’s the crazy part: by increasing the size of the model, we make the holes bigger, and decrease the Machine Space - enough to bring down the price of the model even further! However, at this size, the holes of the model are too small for Shapeways to pack anything inside it, so we are taking a hit on Machine Space. This drops the price of the model significantly to about $66. Notice that the 195 cm^3 Volume has decreased to about an eighth of that, to just 24 cm^3. (Here’s the math: $2.50 for one part + ($0.28 material charge)*(196 cm^3 volume) + ($0.21 machine charge)*(439 cm^3 machine space = about $150.)īy decreasing the Scale by half, to about 7 cm across, we can decrease the Volume by a factor of eight. That means that it would have cost $150 to print in Red Strong & Flexible Polished Nylon. The original size of this model was about 14 cm across. Let’s use the Rhombic Dodecahedron Menger Frame from our geekhaus shop as an example. That’s what we’ll be taking advantage of in the following examples. After printing, they just shake out the other objects and separate them (see this video for details). Sometimes, this means that Shapeways will print other models inside of yours. Shapeways is very good at packing objects together for printing, and measures closely around each object to see how well it will pack with other objects. Larger volumes do tend to take up more space, but Machine Space also considers how well your object packs with other objects being created in the same print job. Volume measures how much printing material is needed for your object, while Machine Space measures how much room your object takes up in the printer. At first glance, these two things sound the same, but they aren’t. However, when printing with Strong & Flexible nylon plastic, you have to consider not only Volume, but also Machine Space. For example, if you Scale to 80% of an object’s linear size, it causes the Volume of that object to shrink to nearly 50%. Because changing Scale affects all three of those directions, every change in Scale causes approximately that change in Volume cubed. When you change a model’s Scale in Shapeways, you are changing its linear measurements, or how far across the model spans each of the x, y, and z directions (if you’re unfamiliar with those concepts, you can think of x, y, and z as its height, width, and depth). There are three ways of measuring “size” that are important when printing with Strong & Flexible nylon plastic at Shapeways: Scale, Volume, and Space.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |