http://www.zwsoft.com/forum/viewthread.php?tid=2268 [align=left][color=#333333][font=Verdana, Arial, Tahoma, Calibri, Geneva, sans-serif][size=13px]Gents,[/size][/font][/color] [color=#333333][font=Verdana, Arial, Tahoma, Calibri, Geneva, sans-serif][size=13px]I have been attempting to follow the tutorial but without the associated files.[/size][/font][/color] [color=#333333][font=Verdana, Arial, Tahoma, Calibri, Geneva, sans-serif][size=13px]~The main issue I seem to be having is when I create the cutting tool from a 3 line polyline triangle the result is 3 individually swept surfaces.[/size][/font][/color] [color=#333333][font=Verdana, Arial, Tahoma, Calibri, Geneva, sans-serif][size=13px]I need the thread to be solid so I can subtract it from a cylinder and indent the thread into it.[/size][/font][/color] [color=#333333][font=Verdana, Arial, Tahoma, Calibri, Geneva, sans-serif][size=13px]I see that the Cutting Tool in the tutorial has 3 extra lines inset, why is that? Is it a solid surface? must i sweep a differnt poly line object? or a joined polyline object? Im new to CAD and any help would be appreciated.[/size][/font][/color][/align] SLW210 2012-07-11 17:52:39 http://www.zwsoft.com/forum/viewthread.php?tid=2268&pid=15374 [i=s] Post Last Edit by johnwalter at 2012-7-12 10:13 [/i] Your thread cutting profile must be a joined or it will [url=http://www.zwsoft.com/Service_Support/ser_zwcad/Tips_and_Tricks/Design_Wire_Rope_with_ZWCAD.html]sweep[/url] only 3 surfaces as you stated. Use PEDIT and join the three lines then sweep the helix. johnwalter 2012-07-11 17:55:50