I want to learn OpenScad! Anyone have any tips?

[truly_bent]

Roxy;

Did the OpenJsCad people get back to you on that bug you reported about the screwthread_v2.scad file not working in the OpenJsCad interpreter? If not, i think i may have found the "bug". From the OpenJsCad manual:

"An OpenSCAD (.scad) translator & importer is included in OpenJSCAD, following features aren't working yet:
- DXF import and manipulation (e.g. import_dxf, dxf-cross, dxf_dim functions).
- rotate_extrude() (Note: OpenJSCAD supports rotate_extrude() )
- minkowski() and hull() transformations (Note: OpenJSCAD supports hull() )
- $fa, $fs global variables.
- Modifier characters: #, !, %"

Turns out that the screwthread_v2.scad program has a hull() transformation:
...
for(i=[0:step:360-step])
hull()
for(j = [0,step])
rotate([0,0,(i+j)])
translate([D_maj/2,0,(i+j)/360*P])
screwthread_triangle(P);
...

I expect the translate() function is the culprit, but it could also be the rotate(). Have to dig a little deeper to be sure.