It’s my first project in Rhino and I’m quite happy with the first results. But what I’ve been struggling with and got stuck with is fillet edging of the sides of the guitar body and spherical belly cut.
I’ve tried probably everything in a filleting tool, tried to make corners of the cut smoother, even tried to trim surfaces pipe, and add surface, but no luck at all.
Could you please help me, what I’ve missed or did wrong? Or probably there is some technique that suits my needs?
Hi Eugene - is the attached something like what you want? I replaced the cut surface, which looks a little messy - I don’t say it is quite right but maybe close enough. For a contant radius fillet, it should be less than R=1 as you have an existing vertical fillet that is R=1. There are ways around that but for now this is .75 or so all around - are we on the right track?
@pascal, Wow, after 4 days of struggling with the issue, I can’t believe it’s even possible!
In fact, the fillet around the neck heel should be like you did, around 0.75, and where the horns begin, it should gradually increase up to 3.175 as on the top edge. It’s not a big deal to add new handles in the places I want.
As for cleanliness of the cut surface itself, it looks like maybe you trimmed back the side and bottom surfaces and then lofted between them? The density and un-even isocurve distribution suggests that is likely - in general I would avoid making surfaces directly from trimmed edges. Trimmed edges are complex, and are almosat certainly not compatible, structually, with any other curve or edge, so Rhino is forced to make a dense and messy surface.
A better strategy is usually to make a surface you like from clean curves and then trim the existing surfaces with the surface. In my quick and dirty example I made a clean new curve at the base plane and extruded it (ExtrudeCrvAlongCrv)
You need to get guides (after cutting the surfaces) from the edges of the surfaces (DupEdge). Create a curve profile (possible with a radius of 2.25 (as you used)) and use Sweep2 (Sweep 2 Rails) in one direction, then in the other direction.