Fillet the surface like in the picture

[Emmanuel_Fernando]

I try to fillet the surface like in the picture. At the rear its more curvature than front. I also want to get the draft angle in a line.

Trail 1.3dm (626.1 KB)

[Normand (Jakob Normand)]

Hi @Emmanuel_Fernando
If you want a continuous, smooth fillet or blend to run the full length of your shape, you first need to make sure that all you surfaces - at least all surfaces in the top in one “set” and all surfaces on the side in another - are tangent and will join up. In their current state there are both gaps and discontinuities.
If you fix that, depending on your preference, you can use either FilletEdge for a rolling-ball fillet, although from the reference picture it looks more like a G2 blend. Check out @theoutside’s video on a pipe-trim-blend workflow that could be an option for something like this.

HTH, Jakob

EDIT Also, your tolerances are very tight - might want to loosen it up a bit, unless a tolerance of 0.0001mm is really needed!

[martinsiegrist]

Please don’t create a topic and send a separate request in a personal message without mentioning the topic.

[Emmanuel_Fernando]

Thanks Please send me the commands you use.

[Normand (Jakob Normand)]

MatchSrf and Sweep2 - then DupEdge on the upper edge, Pipe the resulting curve, ExtendSrf on the pipe ends to make sure they extend beyond the surfaces, Split top and side and BlendSrf to create the blend. I replaced the middle top surface completely:

It had some funky CP’s. You can edit it manually, but I was too lazy
HTH, Jakob

[Emmanuel_Fernando]

Thanks, any technics to get the draft line straight.

[Emmanuel_Fernando]

Trail 2.3dm (1.1 MB)

[pascal (Pascal Golay)]

Hi Emmanuael one other thing that may make lifer easier is to avoid, where possible, making surfaces where the UV comes to a point - often it is better to make a simple rectangular surface and trim it.

@Emmanuel_Fernando the V8 WIP can help here probably as well - using FilletSrfToRail, with a G2 blend:

-Pascal

[lander (CAD CAM CNC)]

@pascal

avoid, where possible, making surfaces where the UV comes to a point - often it is better to make a simple rectangular surface and trim it.

ah yes the proverbial ambiguity of a trimmed edge

[Emmanuel_Fernando]

The upper surface is sectioned. When selecting the surface where the line is, it does not work if the surface is not continuous. In your first picture, the blue surface (top deck) is a combination of 3 surfaces. how you work that out. do you have any videos.

[lander (CAD CAM CNC)]

scan it with iphone LIDAR

@Emmanuel_Fernando

blue surface (top deck) is a combination of 3 surfaces. how you work that out.

@pascal

using FilletSrfToRail, with a G2 blend:

these edges don’t line up btw:

I used my trade secret render mesh settings, explode, rebuild edges, refresh shade, routine to reveal that.

maybe the design was intended that way idk.

I wonder what the specs are on that fillet…

this junction is problematic:

I duped the edges next and pulled them to get it to trim:

added some knots, extracted wireframe:

networked a new srf and rebuilt:

extracted new wireframe, isolating certain crvs:

networked srf and rebuilt again:

noticed a problematic vertice:

noticed a problematic hole on the other end of area:

another problem area with weird srfs:

so I duped edge, pulled, trimmed, matched srf etc, to clean it up a bit:

digressing a minute seeing some more issues interpreting design intent:

I might not really put more time into this unless there’s specifications of some kind to indicate design intent, or maybe if I get bored later.

weird gap:

decided to play around with it some more:

not done yet but this is the direction I’d go, cleaning up the edges etc:

more gaps:

a lil more done:

sometime later will mess with more iso’s and gaps

next I’ll probably work on the naked edges:

naked edges now tight:

I used ‘movedUVN’ to create an intersection crv to match to.

Without being the original designer, I wont have the authority to decimate the density, therefore the whole point in maintaining density is to maintain original geometric curvature as much as possible.

Decimating the density later down the line is always an option.

ok, now it’s ready for fillet challenge:

Trail 1_emod.3dm (11.4 MB)

next is to play around with fillets and densities, but not sure what fillet specs are, soo…

@pascal

where possible, making surfaces where the UV comes to a point - often it is better to make a simple rectangular surface and trim it.

@pascal

using FilletSrfToRail, with a G2 blend:

Pascal may very well have already solved it last yr o’ course but I had to mess with it. Guess I’ll make up a fillet spec later Maybe the spec is “like in the picture”

In which case, the base-shape doesn’t seem to match the picture much, soo…

Yeah Rhino not likeing that edge

Plasticity didn’t like it either. Might have to make it solid, or create fillet/blend more manually.