Sorry, there is no default library as such. You can have a library path, see here. <https://en.wikibooks.org/wiki/OpenSCAD_User_Manual/Libraries> You still need to 'include <yourthing.scad>', but at least you don't need to type the path. ----- Unless specifically shown otherwise above, my contribution is in the Public Domain; To the extent possible under law, I have waived all copyright and related or neighbouring rights to this work. This work is published globally via the internet. :) Inclusion of works of previous authors is not included in the above. The TPP is no simple “trade agreement.” Fight it! http://www.ourfairdeal.org/ -- View this message in context: http://forum.openscad.org/Linear-Arrays-tp12309p13408.html Sent from the OpenSCAD mailing list archive at Nabble.com.