Hello,

I will be able to upload the video over the next few days.

For this sort of modeling I've found it beneficial to think about model strategy before just jumping into things and trying to cobble something together. It seems like lack of planning tends to have models fall apart.

Its an obsolete modeling plugin for Rhino, killed off by Autodesk :)

I Made 2 boxes Union-ed them and filleted them, no problem.
Using the latest beta V4

Hi Lara,

Here's my attempt, and my first post on the forums! This was a little more complicated than just a simple fillet. First, I made the fillet curve profile and swept it along the outside of the shapes wherever I could. Then, for the complicated fiddly bit where that didn't work, I intersected two pairs of curves (2nd attached image) to make some complicated rails to sweep that same profile. Once the fillet surfaces were made, I trimmed away the parts of the main shapes that weren't going to be visible. I've attached the 3dm file with the model. Ugh, it's hard to talk about 3d modeling in the abstract, hope this helps!

(PS Michael Gibson, I love working in this program!)

-Jokubart

Hi MOIs,
I have completely forgotten to thank you for your attempts: THANK YOU! That's really awesome. I was now able to recreate it well and continue learning.
@Death: Thanks, but I don't think your model is exactly right. One element should not be integrated into the other, but should stand outside it. Like the one from Jokubart a post below.
@Jokubart: Thank you.

One question: It seems trivial, but I can't get it right with my MOI knowledge: How do I move a line without extruding? Otherwise I'll get subdivisions that I want to avoid!
Cheers, ML

Hi Lara, unlike a polygon modeling you usually don't manipulate NURBS solids by stretching pieces around like that.

It looks like you already have fillets applied to that? It should be ok then to have subdivisions like you're worried about, they shouldn't do any harm.

If you're still stuck, could you please post the .3dm file for your current model so I can take a look?

- Michael

< you usually don't manipulate NURBS solids by stretching pieces around like that.

Better to Add Boolean solid volumes ?

Hej Michael, I made a "workaround". This is good for me. Thanks, ML

Workaround is not still perfect. (or better...my MOI- skills are not good enough)
1.
There are some lines associated which I intended to delete. But I cant do that. Don´t know what I made wrong!?
2.
The red section is not perfect. But I can´t get it better. And the S-Line for a Loft is in peaces and I´m not able to select it to join for a proper lofting.

Help would be good...
cheers, ML

Your piece is floatting in the space : put in middle of the grid better for eyes tranquility! :)
(and more easy for rotate it! )

Some lines are floating in the Space (object G) Kill it!

Some objects are Hidden ! So Unhide all ! Kill them

Line edges have not same color so surrely belong to some different objects!

Your vertical are not exactly equal between blocks or even in the same block!

200,0000003 against 200,0000000

Some curves are overlapsed

etc...

Seems better efficient to redraw your object...more and more you redraw it more and more you find tricks!
Draw Arc Cont between Lines
Extrude Line for make a surface
3 Quarter Arcs + NetworkWork for make surface
etc...

Select All and press TAB & Write ExplodeMove = you see what is not good! (like lines inside object alone in the space... ;)
etc...

uff...a MOI-Pamphlet...too late for that, tomorrow...Thanks Pilou...

Hi Lara, the line that you can't delete is a squished down surface, those don't behave properly for click selection but you can select it by dragging a selection window around it and then deleting it.

The red piece is a little off from doing a loft between 2 curves of different shapes - when you loft the surface you make will try to connect together at equal distance traveled along each one and since the lower one is longer it's going to kind of shift towards the spiky part of it.

You can get a better idea of this by separating out that piece and using Edit > Show pts to show the surface control points, you can then kind of see how the top and bottom are connecting together from the control points.

Ideally you would get a better surface there by doing a straight extrusion downwards and then trimming it to produce the pointy shape rather than trying to build a surface directly to the pointy shape with one surfacing operation. But I'll have to see if you will be able to get an accurate enough shape to join to the other surfaces with that way.

- Michael

Hi Lara, please see the attached 3DM version for a replacement for your red surface.

The way I made it was not by directly lofting between that upper and lower edge but instead extruding this one downwards:



So that makes a very regular shaped and extended surface like this:



Then trim it with this to slice the bottom chunk off:



So often with NURBS modeling you don't want to try and build a surface that directly hugs along some irregular shaped boundary, it's often better to build a simplified and extended surface sheet which then gets the irregular boundary applied to it by a trim or boolean cutting operation. That's the main way to get higher quality surfaces, when you trim a surface the surface shape stays the same and it just gets new trimming boundaries on it marking which areas of the surface are active.

Hope that makes sense!

- Michael

Hi Lara, also I just noticed a couple more of those "squished down surface" pieces in there. Another way to get rid of those is to select your main object, and then on the side pane go to Select > Invert which will invert the selection and get the degenerate surface pieces selected so they can be deleted.

A click on a degenerate surface (meaning a surface that is compressed down so it has no actual surface area and looks like it is just a line or a curve) will not select it but other means such as a window select or invert selection or using the scene browser can select those.

Those are usually not things that you want to make, but you can end up with them if you do something like maybe loft between 2 identical curves or if you accidentally squish down a surface so it's all compressed.

- Michael

@Lara

Still just a simple Boolean, just with an offset object...

Instead of trying to "melt" 2 objects together, try 3. Space them apart, insert the bridge object you want, Boolean the whole kittenkaboodle and then fillet to desired width.

Goes like this: Draw your first box object, rotate it holding the CTRL key (gives you a copy). Move the boxes where you normally would, only leave space for twice the fillet size you want, then make a bridge object to match (another box). You now have three boxes which you need to "Boolean Unite" and then fillet. Done..