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A standard nesting of objects can be composed of parts with different sizes and thicknesses. We suggest to always start by nesting the bigger parts in the middle of the build platform and place the smaller ones towards the edge of the build chamber. This will protect the massive parts from deformation, and will help maintain a perfect heat distribution on the part bed.
When printing snap-fit parts, always print the elements with the same orientation, to prevent the non-uniform deformations on all axis. If this rule is not followed, the parts might not snap into place.
Always try to nest as many of the objects as flat as possible, this will reduce the job’s height, and the total print time. An exception is made for large parts to avoid deformation (see page 5 of the eBook: “SLS 3D Printing: Expert Advice for Success”).
In order to avoid difficult cleaning of the parts or fusing of the parts together during the process, a minimum of 1mm gap is required between all of the objects (after the job’s scaling). For an optimized cleaning, we suggest to use 2mm. Massive parts, which can accumulate and release a lot of heat during the process, can require a minimum distance of 5mm.