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Version Alternative: CV from something else use a mix of the knurl properties. Module knurl( k_cyl_hg = 12, module knurled_cyl(chg, cod, cwd, csh, cdp, fsh, smt echo("knurled cylinder max diameter: ", 2*cord); echo("knurled cylinder min diameter: ", 2*cord); echo("knurled cylinder min diameter: ", 2*cord); echo("knurled cylinder min diameter: ", 2*cird); if( fsh < 0 shape(fsh, cird+cdp*smt/100, cord, cfn*4, chg); module shape(hsh, ird, ord, fn4, hg) { x0= 0; x1 = hsh > 0 ? Ird : ord; x2 = hsh > 0 ? Ird : ord; x2 = hsh > 0 ? Ord : ird; y0=-0.1; y1=0; y2=abs(hsh); y3=hg-abs(hsh); y4=hg; y5=hg+0.1; if ( hsh >= 0 module knurled_finish(ord, ird, lf, sh, fn, rn) { for(j=[0:rn-1]) assign(h0=sh*j, h1=sh*(j+1/2), h2=sh*(j+1)) { for(i=[0:fn-1]) assign(lf0=lf*i, lf1=lf*(i+1/2), lf2=lf*(i+1)) { polyhedron( points=[ [ 0,0,h0], [ ord*cos(lf0), ord*sin(lf0), h2], [ ord*cos(lf2), ord*sin(lf2), h0], [ ird*cos(lf0), ird*sin(lf0), h1], [ ird*cos(lf2), ird*sin(lf2), h1], [ ord*cos(lf1), ord*sin(lf1), h1], [ ord*cos(lf0), ord*sin(lf0), h2], [ ord*cos(lf2), ord*sin(lf2), h0], [ ird*cos(lf1), ird*sin(lf1), h2], [ ird*cos(lf1), ird*sin(lf1), h0], [ ord*cos(lf2), ord*sin(lf2), h0], [ ird*cos(lf0), ird*sin(lf0), h1], [ ord*cos(lf1), ord*sin(lf1), h1], [ 0,0,h2], [ ord*cos(lf0), ord*sin(lf0), h0], [ ird*cos(lf1), ird*sin(lf1), h0], [ ord*cos(lf2), ord*sin(lf2), h2] ], triangles=[ [0,1,2],[2,3,0], [1,0,4],[4,0,7],[7,8,4], [8,7,9],[10,9,7], [10,7,6],[6,7,0],[3,6,0], [2,1,4],[3,2,6],[10,6,9],[8,9,4], [4,5,2],[2,5,6],[6,5,9],[9,5,4] ], convexity=5); } } 3D Printing/Pot_Knobs/CustomizableKnob_spikey_with_divot.stl Executable file View File sr1_full.png Normal file Unescape rotate_vector_cos = 0.94; // 'x' of 20 degree rotation rotate_vector_sin = 0.34; // 'y' of rotation left_edge = -rotate_vector_sin * rail_depth; right_edge = height - hole_dist_top); cylinder(r=hole_r, h=thickness*2); echo("Putting a hole for mounting screw: ISO 1481-ST 2.2x4.5 C (http://www.fasteners.eu/standards/ISO/7049/) || order number: 1830732 8A 160V Generic Phoenix Contact connector footprint for: MC_1,5/9-G-3.5; number of pins: 07; pin pitch: 5.08mm; Vertical || order number: 1843800 8A 160V Generic Phoenix Contact connector footprint for: GMSTBVA_2,5/10-G; number of pins: 11; pin pitch: 3.81mm; Vertical || order number: 1924619 16A (HC Generic.

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