Doug Brown Posted July 27, 2011 Share Posted July 27, 2011 trying to get a worksheet to add up the total length of all the polys in my drawing - =length(t=poly) does not work - is length only lines and walls ? thanks Quote Link to comment
michaelk Posted July 27, 2011 Share Posted July 27, 2011 Try =PERIM((T=POLY)) hth mk Quote Link to comment
Doug Brown Posted July 28, 2011 Author Share Posted July 28, 2011 michaelk thanks that works - makes a bit more math since trying to find the total length of 1by3's in my frames - but better then adding lines to everything thanks doug Quote Link to comment
michaelk Posted July 28, 2011 Share Posted July 28, 2011 Doug Here's a 2D version of the method I find useful. See attached. Find the area of the the poly and divide by the width of the 1x3. (I like to do this in 3D: find the volume and divide by the area of the cross section. If you use a class for each kind of stock, you can just drop your set piece into your "cut list generator" an it will spit out a cut list for each kind of lumber, steel, and sheet good.) But your idea of finding the perimeter, subtracting the length of the ends and dividing by 2 also works. Both methods fail when the stock has a mitered cut in the end. Or a notch (ie. for a half-lap joint). I've never been able to come up with a good method for generating a cut list that takes miters into account. hth mk Quote Link to comment
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