whiskeymike Posted February 4, 2014 Posted February 4, 2014 I'm looking to model a bracket that would go around this grab handle in a jeep, such as this one. - http://m.jeep.com/shared/2012/wrangler/gallery/images/interior/2011-jeep-wrangler-passenger-grab-handle.jpg How would I measure the trapezoid shape and curves so that I could accurately produce a bracket that would wrap around it? Quote
ReMark Posted February 4, 2014 Posted February 4, 2014 (edited) Most accurate method = laser scanning. Next most accurate method: take a series of digital photographs then use them to produce a point cloud via a program designed to do just that. http://www.my3dscanner.com/index.php?option=com_k2&view=item&id=58:how-it-works&Itemid=57 Or try this... Autodesk 123D Catch http://www.123dapp.com/catch Edited February 4, 2014 by ReMark Quote
whiskeymike Posted February 5, 2014 Author Posted February 5, 2014 Thanks, I'll try the photo with catch and see what comes of it. draw a polyline > properties > lenght? Yep, I understand how to enter the properties so my drawing matches what I enter. What I can't figure out is how you measure a curve/bend in the first place. If it was a hard angle, I could use a protractor, determine the angle and enter the dimensions and angle and it would be done. But when there is a more organic bend to something, how would you obtain the measurements to accurately reproduce it? I'm going to try the photo method. But I suspect that I will have a lot of trial and error in getting something to fit and match the curve. Quote
rkent Posted February 5, 2014 Posted February 5, 2014 You establish a straight edge away from the shape then measure perpendicular from the straight edge to the edge of the curve. Do that, say, every 1/2" and you will have points that you connect to duplicate the curve in one plane. Quote
Tiger Posted February 6, 2014 Posted February 6, 2014 Yep, I understand how to enter the properties so my drawing matches what I enter. What I can't figure out is how you measure a curve/bend in the first place. If it was a hard angle, I could use a protractor, determine the angle and enter the dimensions and angle and it would be done. But when there is a more organic bend to something, how would you obtain the measurements to accurately reproduce it? I'm going to try the photo method. But I suspect that I will have a lot of trial and error in getting something to fit and match the curve. So not an CAD-question then No worries mate, I just didn't read your question the way you intended :wink: Quote
whiskeymike Posted February 6, 2014 Author Posted February 6, 2014 You establish a straight edge away from the shape then measure perpendicular from the straight edge to the edge of the curve. Do that, say, every 1/2" and you will have points that you connect to duplicate the curve in one plane. Makes sense. I'll give it a shot. Thanks Quote
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