(2018-01-14, 20:49)can topcu Wrote: Thanks again for your interest. I downloaded and copied file in to the folder but i cant see part in programs (stud.io, mlcad, leocad). What is my mistake?I guess you forgot to download the subpart http://www.ldraw.org/cgi-bin/ptdetail.cg...057s01.dat and the torus primitive used by the subpart: http://www.ldraw.org/cgi-bin/ptdetail.cg...8i1818.dat
Alternatively you can download all unofficial parts here: http://www.ldraw.org/library/tracker/
In addition: in MLCad you need to update parts.lst (file -> scan parts)
For LeoCAD you may need to set it up to use a plain library (it defaults to use a zipped one), or place the unofficial zipped archive from parts tracker in LeoCAD program folder.
Note that stud.io has a special gestion of parts, so you may need to do more to see the part appear. But I'm not used to it...
Finally, if you use LDCad (highly recommended)... you have nothing special to do