Hello everyone. I am very new to the Rhino 6 software but making steady progress for my designs at work. I have come to a point were I have read the tutorials but not obvioulsy understanding correctly.The attachment below shows a flat solid surface but I need to bend the “wings” through 90 degrees so it touches the cyclinder - these wings need trimming which I can do.
Every time I bend it, the curve is very open and not on the line I want.
Yes that’s what you would do, the two flat surfaces and a fillet between them, it’s not practical to bend things afterwards most of the time, and it doesn’t really help with flattening in any way and it’s not like it’s accurately modeling how the sheet will stretch depending on how its formed, Rhino has no specific sheetmetal features.
If your model is made up of clean flats and fillets at the bends, you can select all the surfaces of one side of the sheet and unroll them at once to get the flat sheet. Now of course that’s not perfectly precise because of the bend factors, so the times I’ve done this the process has gone one of two ways: Use that 2D to get an estimate on the material to cut, and send the supplier the finished 3D showing precisely what I want to achieve for them to work out; or, model the “mid surface” of the sheet which winds up being close enough for many purposes.
I will have to create my next model that way so that I can show the fabricator how I want the bent but then re-orientate the up-stand to the same plane so that it can be laser cut ready for bending in my construction file. I can calculate the extra metal required to get the bend in the correct place.