Hi, I’m having trouble using Rhino for Mac for the first time really now I’m trying to do more complex things with it. The Youtube tutorials are not helping as I have not found Mac oriented ones. I can’t find find the option button for a start and I can’t get the Osnap function to work. I’m trying to build a screw drive for a machine I’m prototyping on a Flashforge printer. So far I’ve been able to overcome any issues by trial and error and using online repair tools but I’m stuck here right now. Please help me if you can…
Go to the Learn Page on the Rhino Web site, and in the table of contents on the let, choose, “Rhino for Mac Tutorials”.
I find it hard to explain the problems I’m having. Right now, I’ve been trying to extend a cylinder using the Osnap command so I can complete the screw design I found on Youtube. It’s only extending the exterior of the cylinder and not the top and bottom surfaces.
However, I found and downloaded the Boltgen plugin and completed the necessary task in seconds. I’ve found many problems with commands in that for instance, creating a helix, pipe or tube to be very fiddly and frustrating at times, with the radius window playing up and creating random sizes which thankfully eventually stops happeningand gives me the desired radii. Have you had any other users report these glitches or is it something I’m not doing?
Best wishes, Rob
You’re making a common mistake, thinking your “cylinder” is a single thing.
It’s not. Rhino is a surface modeler.
A cylinder in it’s simplest form is a polysurface.
There is the outside surface that you are extending, but there are also two trimmed surfaces that cap the ends.
If you Extend the outer surface, you will also need to Move the surface that caps the end.
Farther into the tutorials you’ll come across the SolidPtOn command that turns on the contol points for polysurfaces like your cylinder. You can then select the control points that define the end of the cylinder, and move them.
This will extend the cylindrical surface (like Extend does), AND Move the capping end surface.
In Rhino, you are modeling objects by building surfaces that enclose the volume of the object you want to create.