Another .stl file off the model repositories that I want to change. Any suggestions on where to start. To NURBS didn’t give me anything I could use.
12mm.stl (2.3 MB)
the starting surface are 2 ruled surfaces.
build a simple curve in top view that fits to the footprint / outline
_curve (Degree 3 - maybe 4 Points are already enough)
copy the curve in z, vertical
_loft
move the cvs until the angle fits to the input (or construct some helper lines…
add details from the right view
the cut-out is a simple extrusion
_offsetSrf to get the thickness
filletEdge / filletSrf to round the corners.
as soon as you stuck post how far you came.
Thanks, Tom. I have not started it yet. I’ve been away from Rhino for a bit and was looking for suggestions that might help me not waste time. What you show is what I was thinking, so I may not be as rusty as I think I am.
Gracias.
Can you give more detail about specifically what you want to change?
It’s possible you can work with what you have in mesh.
Tom,
I originally imagined using loft, but then tried to use Sweep 1.
Here is what I did:
1 I ran a line from apparently matching points at back of the mesh. Made a centerline from that.
2 Drew half the base curve using interpolate points then mirrored and joined.
3 Drew a profile curve of the side angle and used Sweep 1
However, the sweep at the end is a bit off. See pic.
I’m not sure what you mean here, “copy the curve in z, vertical.” Shouldn’t that curve be a different size to get the angle with a loft?
The plan is to add parts for wireless charge pad. As I said, I’ve never worked in Mesh, and I’ve hated it the few times I’ve tried. Too many lines, can’t snap where I want, the faceting. In fact, something like just trying to get the base outline of this piece is a problem. Hard to get appropriate centers, matching arcs, tangencies, etc., when drawing outlines. This is probably, my ignorance, but I mostly understand how to model in NURBS, so I stick with that.
yes - first step is to copy it with vertical option, then for example scaleNU or move the cvs. (of the curve)
or
you can also do that after lofting or extruding: move the CVs of the surface.
if you sweep1 mirror the shape curve to both sides to make sure you get a symmetric part.
cheers - tom
_scaleNU is a command that allows to scale different factors x,y,z
CV stands for control vertex or control point
upload your file so it s easier to help
PS_TEST.3dm (1.2 MB)
Use top and bottom curves as rails to Sweep2 for better control of the shape.
But Sweep2 requires the upper rail which I’m not yet able to create correctly.
Thanks for the help. I’m going to walk away for a bit, and comeback to it a later.
ok, I’ll leave you to it, I’ll just mention you can make nurbs parts, just smash them in proximity to the existing mesh parts and then mesh boolean for 3d printing or shrinkwrap to get parts that will work great for this type of work. I’ve done quite a bit of this and it’s a lovely workflow once you get a handle on how to work with meshes.
I love it because you don’t have to trim or boolean anything. It’s super fast, easy to change and very robust (plus you can shell it if you want- see my never fail shelling video on youtube)
@mention me if you want more details
Thanks Kyle, Ill experiment with this mesh thing at another time.
