https://forums.autodesk.com/t5/inventor-forum/inventor-how-to-use-angle-constraint-with-explicit-reference/m-p/8349431#M209084 <P>Hello&nbsp;@Anonymous!</P> <P>&nbsp;</P> <P>Please hit the Accept as Solution button if&nbsp;the post&nbsp;from&nbsp;<a href="https://forums.autodesk.com/t5/user/viewprofilepage/user-id/486618">@johnsonshiue</a>&nbsp;answers your question.</P> <P>&nbsp;</P> <P>Thanks!</P> Mon, 22 Oct 2018 07:35:11 GMT marius.gildehaus 2018-10-22T07:35:11Z https://forums.autodesk.com/t5/inventor-forum/inventor-how-to-use-angle-constraint-with-explicit-reference/m-p/8348646#M209081 <P>Hi!<BR /><BR />What is the purpose of this feature and how does it work?</P> <P><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="angle constrain.png" style="width: 418px;"><img src="https://forums.autodesk.com/t5/image/serverpage/image-id/560037iB8D8BEB55F95369C/image-size/large?v=v2&amp;px=999" role="button" title="angle constrain.png" alt="angle constrain.png" /></span></P> <P>&nbsp;</P> <P>&nbsp;</P> <P>I have seen the use of this feature in some tutorials, but I didn't understand the meaning.</P> <P>Thanks!</P> <HR /> <P>@Anonymous,<BR /> <BR />marius.gildehaus has edited your subject line for clarity<BR />Original: angle constrain issues</P> <HR /> Mon, 22 Oct 2018 07:33:39 GMT https://forums.autodesk.com/t5/inventor-forum/inventor-how-to-use-angle-constraint-with-explicit-reference/m-p/8348646#M209081 Anonymous 2018-10-22T07:33:39Z https://forums.autodesk.com/t5/inventor-forum/inventor-how-to-use-angle-constraint-with-explicit-reference/m-p/8348663#M209082 <P>Hi! There is a lot of information about Explicit Reference Angular constraint. Below is a page explaining how it works.</P> <P>&nbsp;</P> <P><A href="https://knowledge.autodesk.com/support/inventor-products/learn-explore/caas/CloudHelp/cloudhelp/2014/ENU/Inventor/files/GUID-AD4679FD-EE9B-47C0-9E32-04B990BDD29E-htm.html" target="_blank">https://knowledge.autodesk.com/support/inventor-products/learn-explore/caas/CloudHelp/cloudhelp/2014/ENU/Inventor/files/GUID-AD4679FD-EE9B-47C0-9E32-04B990BDD29E-htm.html</A></P> <P>&nbsp;</P> <P>Think of ERA is like a coordinate system requiring three selections. The first selection is like X, the second selection is Y, and the third is Z. The ERA type of angular constraint ensures the three selected pieces of geometry retain the relative orientation regardless of the angular value. The angular constraint between two components in 3D can have multiple solutions. The third selection helps stablize the relative position. The logical choice of the third selection is the plane where the two components are allowed to rotate.</P> <P>Many thanks!<BR /><BR /></P> Sun, 21 Oct 2018 17:35:38 GMT https://forums.autodesk.com/t5/inventor-forum/inventor-how-to-use-angle-constraint-with-explicit-reference/m-p/8348663#M209082 johnsonshiue 2018-10-21T17:35:38Z https://forums.autodesk.com/t5/inventor-forum/inventor-how-to-use-angle-constraint-with-explicit-reference/m-p/8348839#M209083 <P>Thanks!</P> Sun, 21 Oct 2018 21:26:32 GMT https://forums.autodesk.com/t5/inventor-forum/inventor-how-to-use-angle-constraint-with-explicit-reference/m-p/8348839#M209083 Anonymous 2018-10-21T21:26:32Z https://forums.autodesk.com/t5/inventor-forum/inventor-how-to-use-angle-constraint-with-explicit-reference/m-p/8349431#M209084 <P>Hello&nbsp;@Anonymous!</P> <P>&nbsp;</P> <P>Please hit the Accept as Solution button if&nbsp;the post&nbsp;from&nbsp;<a href="https://forums.autodesk.com/t5/user/viewprofilepage/user-id/486618">@johnsonshiue</a>&nbsp;answers your question.</P> <P>&nbsp;</P> <P>Thanks!</P> Mon, 22 Oct 2018 07:35:11 GMT https://forums.autodesk.com/t5/inventor-forum/inventor-how-to-use-angle-constraint-with-explicit-reference/m-p/8349431#M209084 marius.gildehaus 2018-10-22T07:35:11Z https://forums.autodesk.com/t5/inventor-forum/inventor-how-to-use-angle-constraint-with-explicit-reference/m-p/14049980#M408264 <P>The link provided by Johnson no longer works. Is there an updated link?</P> Wed, 11 Mar 2026 00:31:41 GMT https://forums.autodesk.com/t5/inventor-forum/inventor-how-to-use-angle-constraint-with-explicit-reference/m-p/14049980#M408264 gcarvac 2026-03-11T00:31:41Z https://forums.autodesk.com/t5/inventor-forum/inventor-how-to-use-angle-constraint-with-explicit-reference/m-p/14050081#M408266 <P><A href="https://www.youtube.com/watch?v=zHNUsaWUGOI" target="_blank">https://www.youtube.com/watch?v=zHNUsaWUGOI</A></P> Wed, 11 Mar 2026 04:50:56 GMT https://forums.autodesk.com/t5/inventor-forum/inventor-how-to-use-angle-constraint-with-explicit-reference/m-p/14050081#M408266 89198826955 2026-03-11T04:50:56Z https://forums.autodesk.com/t5/inventor-forum/inventor-how-to-use-angle-constraint-with-explicit-reference/m-p/14050127#M408270 <P>Wow, someone linked to one of my videos. I must be famous!</P><P>Pick the pivot with the third selection.&nbsp;</P><P>&nbsp;</P><P>&nbsp;</P> Wed, 11 Mar 2026 06:14:15 GMT https://forums.autodesk.com/t5/inventor-forum/inventor-how-to-use-angle-constraint-with-explicit-reference/m-p/14050127#M408270 SharkDesign 2026-03-11T06:14:15Z https://forums.autodesk.com/t5/inventor-forum/inventor-how-to-use-angle-constraint-with-explicit-reference/m-p/14050295#M408277 <P><a href="https://forums.autodesk.com/t5/user/viewprofilepage/user-id/13698234">@gcarvac</a>&nbsp;Here also the most recent Help Link <span class="lia-unicode-emoji" title=":slightly_smiling_face:">🙂</span></P> <P><A href="https://help.autodesk.com/view/INVNTOR/2026/ENU/?guid=GUID-AD4679FD-EE9B-47C0-9E32-04B990BDD29E" target="_blank">Inventor 2026 Help | To Place Angle Constraints in Assemblies | Autodesk</A></P> <P>&nbsp;</P> <P>Best,<BR />Marius</P> Wed, 11 Mar 2026 08:47:25 GMT https://forums.autodesk.com/t5/inventor-forum/inventor-how-to-use-angle-constraint-with-explicit-reference/m-p/14050295#M408277 marius.gildehaus 2026-03-11T08:47:25Z