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Imagine extruding a wall profile from the flat floor plane, constraining the extrusion to the Z-Axis. It must meet the pitched ceiling angle above. Is there a simple way to perform this without knife cuts after the fact? I'm currently using the TinyCAD add-on to extend edges to the ceiling face, but this is tedious and I have to perform this function very frequently. Any simpler ideas that I've missed?MyDescriptiveImage

Thanks for the clear reply, Robin. Your second solution worked perfectly. Those snap options do so much more than I realize. The first, however, is still giving me trouble. The vertexes do not snap to the roof angle, and they are variably snapping to whatever point on the roof edge that I am hovering over. I try it a second time with "Align Rotation to Snap Target" at the end of the gif, the result is just crazed. I must have some setting incorrect. See here:

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  1. Set the snap options 'Face', and 'Project individual elements':

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  1. Select the top face(s) of wall, and have a view open looking down the desired axis of projection. (The right-side one, here)

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  1. With the mouse in the projection view, Hit G

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  • $\begingroup$ Thanks, Robin! I've edited the original question with a gif to show an issue I'm having with your first proposed solution. The second solution is perfect, however. $\endgroup$ – CentralProcess May 18 '18 at 18:14
  • $\begingroup$ @CentralProcess .. got you. I keep getting caught out by that.. thinking of other applications. I'll edit the answer. Really, we need to be able to set a custom snap orientation in the same way as we can set a custom transform orientation.. I don't think there's a reason, in principle, it can't be implemented. Thanks. $\endgroup$ – Robin Betts May 18 '18 at 18:26
  • $\begingroup$ Very cool. What’s proper protocol here? Should I delete my edit about your now-gone alternative solution? $\endgroup$ – CentralProcess May 21 '18 at 4:12
  • $\begingroup$ I think we leave the comments in ... I just didn't want any future readers to be misled by my plain wrong first suggestion. Your illustration is useful. $\endgroup$ – Robin Betts May 21 '18 at 6:25

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