To preserve generated supports, do not change the geometry of your part
Because supports and support regions are built upon the lines and surfaces of your part, changing the geometry of your part, such as with the tools in the Design tab, will invalidate supports and support regions. If this occurs, you will get a warning and all your supports and support regions will be deleted.
"Support could not be created. Check support parameters and try again" message
At times you may receive an error when the application cannot generate supports because of a problem with parameter settings. Our recommendation is to methodically review your settings to be sure everything makes sense. Here are two such scenarios:
You requested adaptive cell supports to be generated but there is not enough space between the part and the baseplate to create the cells. This happens with the default adaptive cell parameters when your Z-Offset is 2 mm or less. Your options are to reduce the Largest Cell Size parameter value or increase the Z-Offset.
You selected rod supports to be created with only the Min Point Sampler distribution method selected and your surface support region is a flat surface with no minimum points in the geometry. You should choose a different distribution method in this case.
When parts touch the baseplate
If you have a part surface that touches the baseplate (that is, Z-Offset = 0), you may get tiny supports generated there when you generate supports. By default, support walls intrude, or penetrate, into the part and baseplate by an intrusion amount. You can control support parameter intrusion settings as described in the next section. Or, you can delete the support regions at the baseplate surface if you truly don't want supports in between the part and the baseplate.
A region that overlaps on itself in the Z-direction
Avoid having one continuous support region, such as shown below in the coil model on the left, that overlaps on itself in the Z-direction. Depending on your geometry, this may occur when creating automatic support regions. When this happens, only a portion of the supports can be generated using default support parameters. To avoid the problem, create multiple support regions manually. When selecting facets for any one region, do not include facets that overlap in the Z-direction.
Artifacts generated from tiny support region facets
On rare occasions you may see what appear to be lines underneath the baseplate after generating supports. These artifacts are cosmetic only, are from tiny support region facets, and will not be included in the build file.
