Okay, another "Dear Cadence" As a design services company I go thru a lot of different builds so wanted something a bit more user friendly and faster to use than the lyrstack window. Also wanted to see thermal data for materials. Came up with something that would be nicer to have incorporated into Allegro. You'll need to download it - the code inside the spreadsheet wont run at my IP provider. http://www.gigadyne.co.uk/GigaDyne_Rigid_Stackups.xls Best Regards David Greig ______________________________ GigaDyne Ltd Buchan House Carnegie Campus Dunfermline KY11 8PL United Kingdom t: +44 (0)1383 624 975 http://www.gigadyne.co.uk <http://www.gigadyne.co.uk/> <http://www.gigadyne.co.uk/> ______________________________