in original from @Loubie3D (thanks for the model!) is only 1 length of the centipede/millipede/catterprillar (the other is just a scaled variation, with the same 17 fragments aka vertebras)
so here I am posting variations with more vertebras/fragments - until maximum of the plate size for MINI / MK3s+
other sizes can be easily achieved by Blender modification
OPTIMIZED:
i have increased the bottom size of the feet
→ more area sticking to plate → bigger adhesion to surface
other dimensions are the same as in original for the 98mm centipede (the smaller centipede)
so I have cut it in Blender into 3 parts (head, vertebra sample and rear)
for vertebra is defined array modifier
with that it is just about to insert number of vertebras and head is moved automatically based on formula → easy to create any length of centipede
locate object “thin-vertebra-array-SET-COUNT” find “array modifier”, edit “count" value for anything you like
export STL model
Max lengths info:
48 vertebras
this is max length then can fit Prusa MINI diagonal
it is also max length for Prusa MK3S for X axis
63 vertebras
this is max length then can fit Prusa MK3S diagonal
Print instructions:
no supports needed
I suggest use brim, if you have problems with adhesion
0.4mm distance from object (so it is easily removed!) is enough
reason: it is quite risk without brim for such long millepede, too many feet :)
all attached 3mf and gcode files contain brim
with brim, you can quite safely increase speed of the print
for print without brim:
i have optimized the model, so it has now feet adjacent to plate surface bigger, so it has more adhesion now
but still ensure your plate is super clean!
possibly use 3d printing glue
I was using glue while printing mine long centipede, because you can have only 1 spot not super clean (it happened to me.. 😬), and it will cause one 1 leg slip off, and the whole print is useless…
check the print frequently for first layers until both feet from one pair are joined via bridge, after that point the print is safer
other tip is to reduce some speeds of a printer (not to shake the model too much)
sh
