"Hi Jim, Check if you have the objects set to 'by layer' in object props>material. "

"Hi Kevin, Thanks for the sample files. I figured it out, it has to do with a feature in the display mode settings called 'advanced GPU lighting' which is located in the lighting section on the main Options page for each mode. Please try…"

"I still see the surface edge between joined untrimmed srfs here using the mode I posted. In some view angles with the default layer color the line does appear to vanish though. "

"Hi Kevin, I'm not able to reproduce this either. If you can make a simple example that shows this same issue on your computer, we could determine if this is hardware/setting related or a bug. My only other thoughts right now is to find out…"

"Hi Linwood, Thanks for reporting this. I filed the issue and hopefully we can make a slight change to allow this display setting. The best I could get was to assign a custom color for the edge display that matched the shaded color but this…"

"Uploaded file... "

"Hi Anna, There were a bunch of things that would prevent this model from printing on an RP machine as is. Please see the attached sample which I made starting from your model. Notes are included. In short, make sure curves touch before making…"

"Hi Aya, I think I know the issue here. I made that tutorial using a beta of Rhino 5 and the behavior for sub object selection and extrusion using the ctrl key changed since then. If you want a solid when extruding, make a planar surface first with…"

"Hi Yianni, That shouldn't happen... can I see the file? The underlying control point structure of the surface is what controls the texture mapping space with the default of 'surface mapping' for the planar surface created with Picture…"

"JT, Going out a limb here but can you tell me if you also have a 3D connexion device hooked up? I found another issue with your file when mine was attached. "

"Hi Jason, There were a couple reasons you weren't seeing the texture applied. I was wrong about mesh normals being an issue. Try this with Rhino Render as the active render plugin and while you are in Rendered display mode.  - right click…"

"Hi JT, Thanks for the sample file. The issue here is that the camera for the detail view has a really tiny clipping region or 'frustum'. You can fix this by using the command 'MoveTargetToObjects'  or 'ZS' for…"

"Hi Carl, There are a several rendering plugins available in 64 bit builds. I would suggest focusing on these if you have a really large file and render mesh to raytrace. Vray, Brazil, Maxwell and Flamingo nXt come to mind as options here.…"

"Hi Roberta, The Anti-Aliasing setting in Options>View>OpenGL is for the viewport display and is used by your graphics card. Rendering plugins will have a separate control in their own options for anti-aliasing when the rendering is…"

"Hi, Another thought in addition to using blocks for repeated objects would be to adjust your display mode settings. In the Display Panel there are controls for disabling 'isocurves' which will reduce what Rhino has to draw in the view for…"