I’m very new to Rhino but have worked my way through the Introduction to Rhino 8 (Free) course on the Rhino.edu site with out too much issue. I’m now attempting to ‘lock in’ what I’ve learnt by working on my own model.. as semi-anticipated, things haven’t been going quite as smoothly.
While I’m managing to muddle my way through, my main issue seems to be simply being able to draw geometry in the location that I’d like it..
I’ve tried toggling OSnaps off and on, changing the various selection filters, working in singular or multiple viewports but whatever I seem to try, always results in my lines flying off into the distance, latching onto other objects & seemingly ignoring the CPlane(s).
Can anyone recommend a good guide/video or give some general advice and top tips on plane/view/line use?
If you want to stay on the cplane, make sure you have “Project” in the Osnaps toolbar checked. This will make sure that any turned on osnap, eg. an endpoint, will snap but still draw the actual point on the active cplane.
@Joe_Rosser If you want to draw on a plane at a constant height above the Cplane have Planar turned on. Then when you draw a curve the first point will set the height above the Cplane and subsequent points will be at the same height UNLESS the cursor Osnap snaps to something.
Post an example of where you are having a problem.
The Perp OSnap needs a “base point” (usually the previous point picked, like the start of a line) to snap to locations that are perpendicular to the vector from that base point.
To draw starting perpendicular, use the “Perpendicular” command line option like this: Line → Perpendicular → Pick starting point → (optionally) FromFirstPoint
For more information, on the Rhino menu click on Help→Learn Rhino→Tutorials and Samples…
There, you’ll see the Level 1 Training, Level 2 Training, and more. Level 1 Training is where you should start. There is a PDF manual you can download along with training files that are used in the PDF. I found these very helpful.
To expand on Measure’s comment, the Perpendicular Osnap does not constrain the direction from the last point to be perpendicular to the curve or surface that point may have been on. Instead it is a point on a curve which in the direction perpendicular to that curve from the last point.