Here are a few hexagon module I use frequently to make tapered sockets for nuts [so they tighten up as they are pulled in], and hexagonal holes with a chamfer in the outer wall. These might help creating objects with a little stacking and difference for each layer. HTH Roger. // hex_socket - parameters:     //size of nut af without print allowance  (pa),     //height or size of lead in chamfer e.g. 1 [mm]     //height or depth of socket - socket tapers from hex_af + pa*3 to hex_af -pa   //stack chamfer with hex taper,  lead in chamfer uses lead in z to determine   //height of incoming taper.  Hex_taper uses size inflated by print allowance   //which is the same as the lead in chamfer finishing size, smallest part of hex_taper   //is the hex size with pa deducted rather than added. module hex_socket (hex_af,lead_in_z,hex_socket_z) {     hex_chamfer (hex_af,lead_in_z);     translate ([0,0,lead_in_z-0.1]) hex_taper (hex_af,hex_socket_z); } module hex_chamfer (hex_af,lead_in_z) {     af_size = hex_af+2*lead_in_z;     af_size2 = hex_af+pa*2;//same as af_size in module hex_taper, see below.     hull () {     cylinder(d=af_size*2/sqrt(3),h=0.01,$fn=hex_nut);     translate ([0,0,lead_in_z])         cylinder(d=af_size2*2/sqrt(3),h=0.01,$fn=hex_nut);     }//end hull }//end  module module hex_taper (hex_af,hex_taper_z){     af_size = hex_af+pa*2;     af_size2 = hex_af-pa;     hull () {     cylinder(d=af_size*2/sqrt(3),h=0.01,$fn=hex_nut);     translate ([0,0,hex_taper_z])         cylinder(d=af_size2*2/sqrt(3),h=0.01,$fn=hex_nut);     }//end hull }//end module module make_chamfered_hex (hex_af,hex_z,hex_cham) {     hex_nut = 6;     hex_af_cham = hex_af-2*hex_cham;     hull () {     translate ([0,0,0]) cylinder(d=hex_af_cham*2/sqrt(3),h=hex_z,$fn=hex_nut);     translate ([0,0,hex_cham]) cylinder(d=hex_af*2/sqrt(3),h=hex_z-2*hex_cham,$fn=hex_nut);     }//end hull }//end module A chamfered hexagon hole cutter