laminar edges are constantly given me grief when working with surfaces - I cant work out how they come about - any ideas on how to repair them?
laminar edges are constantly given me grief when working with surfaces - I cant work out how they come about - any ideas on how to repair them?
trimming and knitting seems to work - filleting the edge is always the problem
Can you post a screen shot of a problematic situation involving laminar edges?
knitting together ruled surfaces which were used to create the stepped form - will not take fillet - ive had the same problem when using a sketch as a cutting tool for trim surface - using an extruded surface as a cutting tool tends to work better but I cant always use this method - I hope the image is useful
cheers
It looks like the problem is getting your sidewall faces to merge correctly. As a general piece of advice, you're better off making one surface and trimming it to shape than you are trying to make two surfaces that will merge neatly. The overlapping in the corner where you've got the flag of the vertical surface showing through the curled-strip wall is happening because the edges for the rulled curves don't have matching normal directions at the intersections.
Instead of trying to build up the side walls using ruled surfaces, try offsetting the surfaces indicated by the red arrows in this screen shot
Offset those by the height of the sidewall.
Then, to make your sidewall create a surface sweep or boundary surface using the upright edge as the profile
See, the important thing here deciding what's going to define your side wall surface and then making the surfaces meet at a nice clean seam. In the case above, if I tried to use the edges of the offset surface as a profile for a boundary or loft, the resulting surface would be rippled and pinched if it worked at all. I could have tried cleaning up the boundary first, but what I wanted for the front face was a single surface that matched the profile curve, not a blend between two surfaces. By dealing with trimming the surfaces afterward, I've mate it pretty clear what needs to happen next.
One of the traps people fall into when they get started in surface modeling is trying to define the surface form and the surface boundary at the same time, usually ending up with a suirface that's been torqued and stretched to fit an irregular boundary
Finish off the surface by using the extend and trim tools produce the final surface.
The intersect tool is really useful because it combines extending and trimming surfaces-which can bring their own headeaches-but you can only use it when the operation forms a closed solid and it looked like you still have more work to do.
either way, the result is that you produce better surfaces on which to land fillets
In general, I advise developing surface models by working the surfaces that define your shape requirements first and then add your fillets and save for last your surfaces that are designed to blend between regions. Another guideline is that you want to establish the the curvature of the surface independent of its trimming boundary.
Hope that helps.
Laminar edges, if memory serves, refers to open surface edges that are not knit to form the manifold geometry needed to perform most solid editing tasks.
I would investigate using the trim and knit tools to produce seams that join together open surfaces