Hi Tryve Thanks for your help, I will try that Vince From: Discuss <discuss-bounces@lists.openscad.org> On Behalf Of trygve@totallytrygve.com Sent: Friday, October 9, 2020 8:47 AM To: OpenSCAD general discussion <discuss@lists.openscad.org> Subject: Re: [OpenSCAD] Parametric pulley belt Hi! That width = width +2 thing is some of the worst coding I've ever seen, mine included! The creator has put a variable assignment statement inside the parameter list of a function! you only put the stuff that goes on the righthand side of the '=' there. It's like writing LS_Width_parameter = width = width+2 Have you tried using 'width + 2' in there? Trygve Den 9. oktober 2020 kl. 09.02.34 +02.00 skrev Vince Yeoman <beltechsmb@outlook.com<mailto:beltechsmb@outlook.com>>: Hi I have tried this but still have the same issue From: Discuss <discuss-bounces@lists.openscad.org<mailto:discuss-bounces@lists.openscad.org>> On Behalf Of fred via Discuss Sent: Wednesday, October 7, 2020 9:28 AM To: OpenSCAD general discussion <discuss@lists.openscad.org<mailto:discuss@lists.openscad.org>> Cc: fred <fred_dot_u@yahoo.com<mailto:fred_dot_u@yahoo.com>> Subject: Re: [OpenSCAD] Parametric pulley belt Now that I've tested it, there's a new error with the change recommended from the comment. Line 184 has a parameter in the module call reading "width = width + 2" which is not supported in OpenSCAD. I removed the plus two and it works, but I think all the similar modules will have to be corrected in this manner. The link to the model: Parametric Pulley Belt by Vivalize<https://www.thingiverse.com/thing:2682637/comments> [cid:image001.png@01D69E19.42AD6840] [cid:image002.png@01D69E19.42AD6840] Parametric Pulley Belt by Vivalize Open this design up in Customizer to get started! I needed a belt to go along with droftarts's fantastic paramet... On Wednesday, October 7, 2020, 4:16:32 AM EDT, Vince Yeoman <beltechsmb@outlook.com<mailto:beltechsmb@outlook.com>> wrote: Hi Everyone I am new to Openscad and would like some help please I have downloaded a file from Thingiverse, ( parametric pulley belt ) which allows various timing belt profiles and sizes to be created, the problem is that each time I use the program no teeth appear on the belt and a pin or pulley is in the centre, the issue is with line 110, I have tried and failed to rectify this Any ideas ? 250GBOX Vince _______________________________________________ OpenSCAD mailing list Discuss@lists.openscad.org<mailto:Discuss@lists.openscad.org> http://lists.openscad.org/mailman/listinfo/discuss_lists.openscad.org _______________________________________________ OpenSCAD mailing list Discuss@lists.openscad.org<mailto:Discuss@lists.openscad.org> http://lists.openscad.org/mailman/listinfo/discuss_lists.openscad.org