Is there a way in Blender to achieve some CAD commands like extend lines to the intersection (or nearest) point, or trim/extend to plane?

Like this: http://www.qcad.org/doc/qcad/2.2/reference/en/chapter28.html


Specifically for the commands you mention there exists a CAD add-on called mesh tinyCAD, allows you to easily do the following things (this is not an exhaustive list):

  • VTX (like _extend):
    • automatically extend edges towards their projected intersection
    • generate a vertex at the intersection of two edges ("weld")
  • V2X:
    • generate an unattached vertex at the projected intersection of two edges
  • XALL:
    • intersects all selected edges.
  • BIX:
    • generates the bisector of two selected edges
  • CCEN:
    • given any three selected vertices (in one object), this can recreate a circular set of vertices of any number and scale.

For questions about the add-on or ideas use the project's issue tracker

For _fillet you can use the bevel command: CtrlShiftB With 1 vertex selected

  • It starts out as a bevel but you can increase the number of segments to turns it into a fillet.
  • Adjust radius
| improve this answer | |
  • 1
    $\begingroup$ There are also some built-in features in Blender, which come in handy. Vertex/Edge slide for example can be used to move a vetex / edge by a factor of 0.5 for the midpoint. Turn off clamping to extend. Snapping does unfortunately not work while sliding. $\endgroup$ – CodeManX May 6 '14 at 0:07

There is a new Addon called CAD transform, that goes well with other commands as well. Have a look here


It can be found on the authors gumroad page.

| improve this answer | |

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.