Unknown Object Unknown Object TSE_asw (Aerospace) (OP) 29 Jun 17 20:48 Can anyone tell me what this is? It is made of metal, covered in some kind of fabric and has a nail shaped hook sticking out of the top. http://files.engineering.com/getfile.aspx?folder=4... This is a link to it because it wouldn't let me directly upload it. Thanks in advanced. RE: Unknown Object 3 JohnRBaker (Mechanical) 29 Jun 17 21:08 OK, they're called "Batten Weights" and are used to hold in place the flexible 'splines' used to layout 'loft' lines on a horizontal drawing board, as shown below: BTW, having only ONE is a bit worthless John R. Baker, P.E. (ret) EX-Product 'Evangelist' Irvine, CA Siemens PLM: UG/NX Museum: The secret of life is not finding someone to live with It's finding someone you can't live without RE: Unknown Object SnTMan (Mechanical) 29 Jun 17 21:17 Seem to recall they were called "ducks" or some such... The problem with sloppy work is that the supply FAR EXCEEDS the demand RE: Unknown Object JohnRBaker (Mechanical) 29 Jun 17 21:39 Yes, we've called them "ducks" but officially they're 'Batten Weights' although I've also heard them called 'Spline Weights'. John R. Baker, P.E. (ret) EX-Product 'Evangelist' Irvine, CA Siemens PLM: UG/NX Museum: The secret of life is not finding someone to live with It's finding someone you can't live without RE: Unknown Object 3DDave (Aerospace) 29 Jun 17 23:06 Baker, Sometimes one is all you need. RE: Unknown Object IRstuff (Aerospace) 29 Jun 17 23:30 They look a lot like a whale toy my kid got from Burger King many eons ago. This site shows how to make them: http://forum.woodenboat.com/showthread.php?164653-... TTFN (ta ta for now) I can do absolutely anything. I'm an expert! https://www.youtube.com/watch?v=BKorP55Aqvg FAQ731-376: Eng-Tips.com Forum Policies forum1529: Translation Assistance for Engineers Entire Forum list http://www.eng-tips.com/forumlist.cfm RE: Unknown Object SnTMan (Mechanical) 30 Jun 17 01:05 JohnR, never heard a "real" name for them, thanks. The problem with sloppy work is that the supply FAR EXCEEDS the demand RE: Unknown Object berkshire (Aeronautics) 30 Jun 17 04:35 They give rise to the phrase, " getting all of your ducks in a row." as referred to in Lofting, either in aircraft lofts, or boat yards. Sadly now replaced by a keyboard command . P spline. B.E. You are judged not by what you know, but by what you can do. RE: Unknown Object TSE_asw (Aerospace) (OP) 5 Jul 17 11:27 Hey, Thanks everyone! Answers were great!