https://forums.autodesk.com/t5/fabrication-cadmep-forum/rectangular-quot-coupling-quot/m-p/6627984#M2010 <P>CID 4522 is one of the patterns that do not show an unfold <U>profile</U> in the attached PDF.&nbsp;I assume that it cannot be unfolded, but I am not a sheet metal guy.&nbsp;I have limited knowledge of unfolding patterns, but&nbsp;if I were you, then I would be trying&nbsp;to replace all those 4522 couplings with ones built on CID 1193 or other similar rectangular straight. There are tons of straight rectangular patterns with development <U>profiles</U>&nbsp;to choose from in that PDF.</P><P>&nbsp;</P><P>&nbsp;</P><P><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="1193.png" style="width: 705px;"><img src="https://forums.autodesk.com/t5/image/serverpage/image-id/282894i3A11A6294E77CA3D/image-size/large?v=v2&amp;px=999" role="button" title="1193.png" alt="1193.png" /></span></P><P>&nbsp;</P><P><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="4522.png" style="width: 705px;"><img src="https://forums.autodesk.com/t5/image/serverpage/image-id/282895i9AC8A6CD9AF0BF8F/image-size/large?v=v2&amp;px=999" role="button" title="4522.png" alt="4522.png" /></span></P> Mon, 17 Oct 2016 22:52:06 GMT Anonymous 2016-10-17T22:52:06Z https://forums.autodesk.com/t5/fabrication-cadmep-forum/rectangular-quot-coupling-quot/m-p/6627810#M2009 <P>Certain projects require double s slip joint reinforcement and what our company does is make a standalone double s slip "coupling" that ends up being reinforced and creates the double s slip joint between two 60" joints of raw duct. We were trying to setup our database to draw rectangular duct that automatically adds couplings between straight duct and/or fittings using CID pattern 4522. This worked great, automatically adding the couplings between joints of duct, but when you view&nbsp;the development of one of the couplings it is blank. Is there a way to get the development of the coupling to show up so that we can apply reinforcement (Tie-rods) to it?</P> Mon, 17 Oct 2016 20:53:57 GMT https://forums.autodesk.com/t5/fabrication-cadmep-forum/rectangular-quot-coupling-quot/m-p/6627810#M2009 Anonymous 2016-10-17T20:53:57Z https://forums.autodesk.com/t5/fabrication-cadmep-forum/rectangular-quot-coupling-quot/m-p/6627984#M2010 <P>CID 4522 is one of the patterns that do not show an unfold <U>profile</U> in the attached PDF.&nbsp;I assume that it cannot be unfolded, but I am not a sheet metal guy.&nbsp;I have limited knowledge of unfolding patterns, but&nbsp;if I were you, then I would be trying&nbsp;to replace all those 4522 couplings with ones built on CID 1193 or other similar rectangular straight. There are tons of straight rectangular patterns with development <U>profiles</U>&nbsp;to choose from in that PDF.</P><P>&nbsp;</P><P>&nbsp;</P><P><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="1193.png" style="width: 705px;"><img src="https://forums.autodesk.com/t5/image/serverpage/image-id/282894i3A11A6294E77CA3D/image-size/large?v=v2&amp;px=999" role="button" title="1193.png" alt="1193.png" /></span></P><P>&nbsp;</P><P><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="4522.png" style="width: 705px;"><img src="https://forums.autodesk.com/t5/image/serverpage/image-id/282895i9AC8A6CD9AF0BF8F/image-size/large?v=v2&amp;px=999" role="button" title="4522.png" alt="4522.png" /></span></P> Mon, 17 Oct 2016 22:52:06 GMT https://forums.autodesk.com/t5/fabrication-cadmep-forum/rectangular-quot-coupling-quot/m-p/6627984#M2010 Anonymous 2016-10-17T22:52:06Z