Hello,

is there a way to add a custom seed pattern to the fill pattern? Any way would be considered i.e. using api, macro, editing dll etc? Do you mean a custom hole shape used as the seed for a fill pattern? This can be done. Simply create the seed feature first, then start a fill pattern and pick 'Selected features' instead of 'Create seed cut'.

Please help.

I didn't find the right solution from the Internet.

References:
https://forum.solidworks.com/message/474712
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Thanks