Part Modeling > Engineering Features > Round > Transitions > To Define a Stop at Reference Transition
  
To Define a Stop at Reference Transition
 
* This topic is a continuation of the To Define a Round Transition topic. If you did not follow the procedure in that topic, please refer to it under Related Links.
1. After the Stop reference collector on the Round tab and the Stop References collector on the Transitions tab activate, select either a datum plane, a datum point on the round set spine, or one or more part surfaces as the reference to which the round geometry will terminate. Note that any reference selected will be the new stop location. The system does the following:
◦ Populates the Stop references collector on the Transitions tab with the reference information. Notice that the corresponding Round tab collector indicates that one or more items have been selected as references.
◦ Locates the Stop at Reference transition at the selected references and displays the transition in the graphics window.
2. If you select a datum point or vertex as your stop reference, you can select one of the following from the box on the Round tab:
◦ Point—Stop the round set at a plane that travels through the stop reference and that is oriented normal to the normal to an edge with the stop reference. This is the default.
◦ Isoline—Stops the round set at a plane that passes through the stop reference and normal to the round surface.
3. If you want to cap the gaps between the active transition and part geometry by creating end surfaces, click the Capped check box located on the Round tab. Notice that this check box is available only if you use the Surface or New quilt attachment type (see About Round Attachment Types). This check box is cleared by default.
 
• Side surfaces must exist in order to extend and use them as capping surfaces. If not, the round piece cannot be capped.
• This check box caps only the gaps of the active transition while the Create end surfaces check box located on the Options tab caps all round piece ends for the entire round feature. Remember, the Round tab check box overrides the Options tab check box. This enables you to cap the gaps of the active transition even if you decide not to cap all of the round piece ends for the round feature.
• You cannot cap rounds between a solid surface and a quilt surface.
4. At this point, the transition is defined. Do one of the following:
◦ Define another transition.
◦ Click to return to Set mode and continue working with round sets.
 
* You can also use Back to sets from the shortcut menu.
◦ Click to save your changes, create the round, and close the Round tool.
 
* To restore the default transition, select Default from the Transition Type box on the Round tab or from the shortcut menu. The system does not display default transition types on the Transitions list.
Do not use Delete transition from the shortcut menu or use the DEL key to remove a transition type from the Transitions list. If you do use it, you can do one of the following to restore the default transition type: Press CTRL+Z to undo the selection, switch to Set mode, or close the Round tool.
 
• You can also use Stop References from the shortcut menu to activate the Stop references collectors.
• You can also use Capped from the shortcut menu to cap the gaps of the active transition.
• To preview various transitions before selecting one, place your cursor over each transition type in the Transition Type box. The corresponding transition geometry is highlighted in the graphics window.
• You can always select Default from the Transition Type box, or from the shortcut menu enabling the system to determine the transition type for the round. Notice that the transition type is in parentheses.
• To remove a reference from within a collector, select the reference that you want to remove, and with your cursor in the collector, right-click and choose Remove from the shortcut menu.