Hi Jan, Thanks for the code. I'd guess that most if not all the patterns in "Add RF Element" could be created this way. I have Performance (L) 15.7 version, and though I find the "Add RF Element" in the documentation, I don't find that menu anywhere...so I'm guessing I don't have that feature. What version/level does that feature come in? Regards, Austin -----Original Message----- From: icu-pcb-forum-bounce@xxxxxxxxxxxxx [mailto:icu-pcb-forum-bounce@xxxxxxxxxxxxx]On Behalf Of Jan Blückert Sent: Wednesday, July 21, 2010 7:24 AM To: icu-pcb-forum@xxxxxxxxxxxxx Subject: [PCB_FORUM] Re: How to create a spiral pattern? Hi, I have used the Skill code below to create spiral etch patterns: let((turns width spac point_per_turn center_x center_y pi_val point_ang point_rad end_ang rad_inc ang_inc l_vertices point_x point_y direct) ; ; Edit following six lines turns = 6.0 width = 100.0 ; Width of spirals line (dbu's) spac = 100.0 ; Spacing between turns, edge to edge (dbu's) point_per_turn = 32 ; Resolution center_x = 5000.0 ; Center x coordinate of spiral (dbu's) center_y = 5000.0 ; Center y coordinate of spiral (dbu's) direct = "CCW" ; "CW" for clockwise, "CCW" for counterclockwise ; ; Don't edit below this line pi_val = (4.0 * atan(1.0)) point_ang = 0.0 point_rad = (spac + (width / 2)) end_ang = (turns * 2 * pi_val) rad_inc = ((width + spac) / point_per_turn) ang_inc = ((2 * pi_val) / point_per_turn) if(direct != "CCW" ang_inc = (0 - ang_inc)) l_vertices = list(list((center_x + point_rad) center_y)) while(end_ang > 0.0 point_ang = (point_ang + ang_inc) point_rad = (point_rad + rad_inc) point_x = (point_rad * cos(point_ang) + center_x) point_y = (point_rad * sin(point_ang) + center_y) l_vertices = cons(list(point_x point_y) l_vertices) end_ang = (end_ang - abs(ang_inc)) ) axlDBCreateLine(l_vertices width "ETCH/TOP") ) Copy the code lines into a file (e.g: spiral.il) Edit the file (line 5-11) acc. to the spiral pattern you like to create Load the file in Allegro. (skill load "spiral.il") /Jan ---------------------------------------------------------------------------- -- From: icu-pcb-forum-bounce@xxxxxxxxxxxxx [mailto:icu-pcb-forum-bounce@xxxxxxxxxxxxx] On Behalf Of EricGraser Sent: den 19 juli 2010 17:28 To: icu-pcb-forum@xxxxxxxxxxxxx Subject: [PCB_FORUM] Re: How to create a spiral pattern? Hi ! did anyone try Allegro RF PCB, if you just need a spiral pattern. Eric Chen From: icu-pcb-forum-bounce@xxxxxxxxxxxxx [mailto:icu-pcb-forum-bounce@xxxxxxxxxxxxx] On Behalf Of Macindoe, Gary Sent: Monday, July 19, 2010 10:13 PM To: icu-pcb-forum@xxxxxxxxxxxxx Subject: [PCB_FORUM] Re: How to create a spiral pattern? No takers? The only way I know of to create a spiral pattern (not with variable trace widths) is add connect and use arcs. If you do need variable width, creating a shape with arcs should do it. Regards, Gary MacIndoe Senior PCB Layout Designer Contract - Kelly Services Covidien EbD R&D 5920 Longbow Drive Boulder, CO 80301 303.476.7458 www.covidien.com From: icu-pcb-forum-bounce@xxxxxxxxxxxxx [mailto:icu-pcb-forum-bounce@xxxxxxxxxxxxx] On Behalf Of O Migs Sent: Friday, July 16, 2010 11:57 AM To: icu-pcb-forum@xxxxxxxxxxxxx Subject: [PCB_FORUM] How to create a spiral pattern? Does anyone have a method to create a spiral cline pattern in Allegro? -oscar __________ Information from ESET NOD32 Antivirus, version of virus signature database 5291 (20100719) __________ The message was checked by ESET NOD32 Antivirus. http://www.eset.com __________ Information from ESET NOD32 Antivirus, version of virus signature database 5291 (20100719) __________ The message was checked by ESET NOD32 Antivirus. http://www.eset.com __________ Information from ESET NOD32 Antivirus, version of virus signature database 5291 (20100719) __________ The message was checked by ESET NOD32 Antivirus. http://www.eset.com