With free BricsCad Shape! (function Quick draw) :)
Draw 2-3 volumes Make a Snapshot - dupplicate / rotate / resize the few volumes on a PNG transparent background Image and drag & drop the result on my own little tricky free prog https://editor.p5js.org/Pilou/full/y1GHaBqyT
Put it inside MagicaVoxel + File2Vox by Zarbuz et voilà! :)
Did your 'Other software' thread at the ZBrush forum get lost during the transition to the new ZBrush forum? I can't find it in the new ZBrush forum.
I always liked and appreciated your new software tips in that thread. If it got lost, I'd love to see you start a new thread at the current ZBrush forum.