how to mesh VerletParticles and VerletSprings

I am working with processing for a school project

it almost came to the end but finally i should 3d print the script

so i need to mesh the objects and export STL file

i couldnt figure out how to do it

im trying to use HE_Mesh box but how to apply it on objects that are created with toxiclibs.

(VerletParticles and VerletSprings) And extrude the box along the springs

i can send the script later on if my question is not clear

Thanks a lot!