}

    for (a = [-180 : 26 : 180])
        rotate(a) translate([60-12, 0, 0]) sensor();
}

Hi, I'm trying to do a projection of my part to 2D so that I can export it to DXF for lasercutting. However, when I include the projection() call at the end of the script there is no output. Can you see what I'm doing wrong? $fn=100; module sensor() { width = 8; translate([0,-2.5,-5]) union() { cube([5.5,5,10]); translate([5,-1.5,-3]) cube([1,width,19]); } } module curve(diameter, width) { difference() { circle(diameter); circle(diameter-width); translate([-25,0,0]) cube([100,150,3], center=true); } } module part() { difference() { curve(diameter=60, width=10); for (a = [-180 : 26 : 180]) rotate(a) translate([60-12, 0, 0]) sensor(); } } //projection(cut=false) part(); -- View this message in context: http://forum.openscad.org/No-object-when-doing-projection-tp20456.html Sent from the OpenSCAD mailing list archive at Nabble.com.

 }

     for (a = [-180 : 26 : 180])
         rotate(a) translate([60-12, 0, 0]) sensor();
 }

On Wed, Feb 15, 2017 at 1:58 PM, Scalpel78 <frode@lillerud.no> wrote: > $fn=100; > > module sensor() > { > width = 8; > translate([0,-2.5,-5]) > union() { > cube([5.5,5,10]); > translate([5,-1.5,-3]) cube([1,width,19]); > } > } > > module curve(diameter, width) > { > difference() > { > circle(diameter); > circle(diameter-width); > translate([-25,0,0]) cube([100,150,3], center=true); > > } > } > > module part() > { > difference() > { > curve(diameter=60, width=10); > > for (a = [-180 : 26 : 180]) > rotate(a) translate([60-12, 0, 0]) sensor(); > } > } > > //projection(cut=false) > part(); > according to the errors: you are mixing 2D and 3D operations just put this before your circles: linear_extrude(height=3) so linear_extrude(height=3) circle(....) -- Extra Ham Operator: K7AZJ Registered Linux User: 275424 Raspberry Pi and Openscad developer *The most exciting phrase to hear in science - the one that heralds new discoveries - is not "Eureka!" but "That's funny...".*- Isaac. Asimov