There are 3 types of lattice. Print with brim, optionally with support. Then join it with piece of fillament and glue. For one complete lattice you need to print:
bcc_a 1x
bcc_b 8x
or
fcc_a 2x
fcc_b 1x
or
hcp_a 2x
hcp_b 1x.
0.2 mm layer height
15 % infill
brim
support (not necessary)
The author hasn't provided the model origin yet.