OpenSCAD User Manual/3D to 2D Projection

__NOTOC__ Using projection(), you can create 2d drawings from 3d models, and export them to the dxf format. It works by projecting a 3D model to the (x,y) plane, with z at 0. If cut=true, only points with z=0 are considered (effectively cutting the object), with cut=false(the default), points above and below the plane are considered as well (creating a proper projection). Example: Consider example002.scad, that comes with OpenSCAD. File:Openscad projection example 2x.png Then you can do a 'cut' projection, which gives you the 'slice' of the x-y plane with z=0. projection(cut = true) example002(); File:Openscad projection example 3x.png You can also do an 'ordinary' projection, which gives a sort of 'shadow' of the object onto the xy plane. projection(cut = false) example002(); File:Openscad example projection 8x.png Another Example You can also use projection to get a 'side view' of an object. Let's take example002, rotate it, and move it up out of the X-Y plane: translate([0,0,25]) rotate([90,0,0]) example002(); File:Openscad projection example 4x.png Now we can get a side view with projection() projection() translate([0,0,25]) rotate([90,0,0]) example002(); File:Openscad projection example 5x.png Links: More complicated example from Giles Bathgate's blog