Why does this BOSL library example not display a result?

I opened the file hingesnaps.scad and uncommented the first example I found. But instead of F5 displaying the hinge I got these warnings.

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Try uncommenting

   include <BOSL2/std.scad>

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Thanks, that fixed it!

I had a little earlier uncommented and successfully displayed the first example from another file, threading.scad. Checking back I see that had four includes, all of which had already been uncommented. So presumably I should in future check that all includes have been uncommented?

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Actually, normally, those includes that are documented in the BOSL2 library are instructions for what you need to include in your part file(s). Generally, people do not edit the library files, but use them only as includes.  For example, in a file that I have to create a gear, I could have:

//--------------------------------------------
$fn = 24;

include <BOSL2/std.scad>
include <BOSL2/gears.scad>

gearCircularPitch = 10;
gearTeeth = 20;
gearLength = 5;

spur_gear( gearCircularPitch, _gearTeeth, splineL );

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Thanks Len, very helpful. That's exactly the sort of truly basic stuff I need to learn about libraries.

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How did you decide which includes to include? <BOSL2/gears.scad> obviously, but <BOSL2/std.scad> ?

And what are the basic rules about folder locations for the library and your fresh scad file please?

Terry

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How did you decide which includes to include? <BOSL2/gears.scad> obviously, but <BOSL2/std.scad> ?


Because, at the top of BOSL2/gears.scad, it tells me which files to include:

//////////////////////////////////////////////////////////////////////////////////////////////
// LibFile: gears.scad
//   Spur Gears, Bevel Gears, Racks, Worms and Worm Gears.
//   Originally based on code by Leemon Baird, 2011, [hidden email]
//   Almost completely rewritten for BOSL2 by Revar Desmera, 2017-2021, [hidden email]
// Includes:
//   include <BOSL2/std.scad>
//   include <BOSL2/gears.scad>
//////////////////////////////////////////////////////////////////////////////////////////////



And what are the basic rules about folder locations for the library and your fresh scad file please?

The documentation for OpenSCAD libraries, which explains it much better than I can, is at:

https://en.wikibooks.org/wiki/OpenSCAD_User_Manual/Libraries

Just download the BOSL2 distribution zip, unzip it, move it to your OpenSCAD installation's library folder, and rename it from BOSL2-master to BOSL2.

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