// -*- C -*- toothheight = 1.2; webthick = 1.8; height = 7; pinlengthfact = 1.2; nomrad = height/2 - toothheight; minrad = nomrad - 0.75; maxrad = nomrad + 0.25; jawthick = 1.5; webgap = 0.4; basepinclear = 1.0; toothgap = webthick + webgap*2; basethick = toothheight; module DoveClipPin(h=height) { pinh = h * pinlengthfact; pinheight = nomrad*2 + jawthick*2; translate([0,0, pinheight/2]) intersection(){ union(){ for (m=[0,1]) { mirror([0,0,m]) translate([0,0,pinheight/2]) rotate([90,0,0]) cylinder($fn=20, r1=minrad, r2=maxrad, h=pinh); } translate([-webthick/2, -pinh, -pinheight/2-1]) cube([webthick, pinh, pinheight+2]); } translate([-maxrad-1, -pinh-1, -pinheight/2]) cube([maxrad*2+2, pinh+2, pinheight]); } } function DoveClip_depth(baseextend) = basethick + nomrad*2 + toothheight + baseextend; function DoveClip_width() = nomrad*2 + jawthick*2 + toothgap; module DoveClipEnd(baseextend=1, h=7) { cubex = nomrad*2 + jawthick*2; cube0y = -basethick-nomrad*2-toothheight; centrey = -basethick-nomrad; difference(){ translate([-cubex/2, cube0y, 0]) cube([cubex, -cube0y+baseextend, h]); translate([0, centrey, -1]) cylinder($fn=20, r=nomrad, h=h+2); translate([-toothgap/2, cube0y-1, -1]) cube([toothgap, toothheight+nomrad+1, h+2]); } } module DoveClipPair(baseextend=1, h=7) { delta = DoveClip_width(); for (x=[-delta/2,delta/2]) translate([x,0,0]) DoveClipEnd(baseextend=baseextend, h=h); } module DoveClipPairBase(baseextend=0.1, h=7) { delta = nomrad*2 + jawthick; intrude = nomrad + basethick - basepinclear; for (x=[-delta/2,delta/2]) { translate([x,0,0]) DoveClipEnd(baseextend=baseextend, h=h); } translate([-delta, -intrude, 0]) cube([delta*2, intrude+0.1, h]); } module DoveClipPairSane(baseextend=0, h=7) { rotate([0,0,90]) translate([0, DoveClip_depth(baseextend=baseextend), 0]) DoveClipPairBase(baseextend=baseextend, h=h); } DoveClipPairSane();