Show messages:
1-10
…
31-50
51-70
71-90
91-110
111-129
From: Gord (NEOMEGA)
That looks good now! I need to find how to get surface aligned manually. So you can't join solids and surfaces, but I still don't know why it gets out of square after I draw it on perp. lines.
Thanks, I'm sure I'll come across some other issues when my skills run out again!
G
From: Gord (NEOMEGA)
If I wanted to add a plate effect, where the thing is covered with plates but some standing slightly proud. How could that be done?
G
From: Frenchy Pilou (PILOU)
Depending if you really want the physical material effect or just at the rendering ?
Only material
or simulated by textures
From: Michael Gibson
Hi Gord,
re:
> If I wanted to add a plate effect, where the thing is covered with plates but some
> standing slightly proud. How could that be done?
Do you maybe have an image showing something similar to give a better idea of what you want?
- Michael
From: Gord (NEOMEGA)
This sort of thing?
Image Attachments:
Screenshot 2020-06-10 at 23.06.11.png
From: Michael Gibson
Hi Gord, something like that would usually be applied as some kind of texture map in a rendering program rather than directly modeled.
What are you planning on doing with this model, did you say something about 3D printing it?
- Michael
From: Michael Gibson
Hi Gord, one way you can try for plating is modeling some flat plate objects and then map them onto your surfaces using Transform > Deform > Flow.
http://moi3d.com/3.0/docs/moi_command_reference8.htm#flow
But if your Network surface has any areas where curves squished together it will also squish the plating there as well with this method.
Also there are some other programs like 3D Coat that are focused on applying bumpy details onto an object by painting directly on it, that can be a good way to add detailing like this too.
- Michael
Attachments:
puffer_flow_3dm.zip
Image Attachments:
gord_plating.jpg
From: corchet
draw a grid ( straight lines or curves ) trim the unnecessary segments
place the grid ( or the grids ) in a front view ( the segments of the grid are trimmed ... separate )
save the file ( sometimes it's buggy )
project on the boat ... depending of the complexity it may crash
trim the result ( projected grid + boat )
now you have separate plates ( flat ) select them and apply a thin shell
and a little chamfer
copy the plates ( in whole or part ) you can easily add rivets or aging the surface with scratches etc ...
From: corchet
3dm joined
From: Gord (NEOMEGA)
Cool! It is to be 3d printed, so texturing programs are not going to work. Got to be 'physical'!
I'll try that flow thing. It's like it needs a thin .15mm skin and then I can chop out panels for an overlap effect maybe. Then it needs the dreaded boolean solid again!
If I want raised profiled rails running along a couple of parts of the hull, would sweep be the way? Would they be solid at able to boolean to the hull?
G
From: Frenchy Pilou (PILOU)
Anything to be 3D printed must be "waterproof" so a solid inside Moi...
You can't print 3D a simple rectangle surface without thickness!
So you have 2 solutions for make a hole,a bump...
drawing directly inside your waving surface thichnessed
or make a boolean operation to your volume with another volume or a surface
From: Michael Gibson
Hi Gord,
re:
> Cool! It is to be 3d printed, so texturing programs are not going to work. Got to be 'physical'!
The 3D Coat detailing method is still a possibility because it is able to push around mesh vertices and generate an STL file out.
> If I want raised profiled rails running along a couple of parts of the hull, would sweep be the
> way? Would they be solid at able to boolean to the hull?
Yup, that should be possible. But one thing to watch out for is when you make the sweep make the sweep push halfway through or at least a little ways through the hull. Don't make something that has a flat edge that just barely skims right along the same surface area of the hull because such things can be difficult to intersect with booleans.
- Michael
From: Frenchy Pilou (PILOU)
;) Use Boolean Union and not Join with Volume(s) + Surface (s) for have a solid!
Will be the same if surface is more inside the volume !!! (so with a big intersection)
Join don't work with different nature of objects!
From: Michael Gibson
Hi Gord, so I was thinking of how to explain this... One of the reasons why you're having problems with the ship hull is that you're sticking too much to the "solids and booleans" type modeling method when working on the hull.
When you're working on something like that it's better to work for a while in something like a "skinning" type mode where you want to focus on getting surfaces that touch each other accurately at their end edges. The way to ensure that is to either have 2 adjacent surfaces either constructed from common curves or have them extend through each other and cut each other with the Trim command, then the intersection will be accurate enough to join.
When you're in "skinning mode" you don't want to use booleans. Booleans are good when you're working with solids. But one of the things about booleans is that they are expecting objects to cut each other and for some material to be removed. If the pieces have freeform surfaces that come close to meeting but don't quite align precisely enough then you can end up with little slivery pieces being generated from the intersection. That's what I was trying to show in this previous message:
http://moi3d.com/forum/index.php?webtag=MOI&msg=9819.90
So to avoid that when you're in "skinning mode" you don't want to use booleans, you instead use Edit > Join to glue surfaces together. Unlike the booleans the Join command does not try to do any surface/surface intersections and does not try to remove any material, it's only job is to glue edges together to make a larger skin. When you have formed all the pieces and glued all edges up then you'll have a solid and you can then switch back to boolean operations then.
Basically you want to be using a different area of the toolset when you're working on the hull, using the surface modeling tools Trim, Join and Blend and not booleans right then. It's a more advanced aspect of NURBS modeling and has a longer learning curve. Also models that are going to need a lot of this type of work can potentially be easier to do with subdivision surfaces rather than with NURBS.
- Michael
From: Gord (NEOMEGA)
Wow! What can possibly go wrong there when I try it as a texture!
Thinking on though, I think just plate lines 'scribed' into the surface would be better to avoid an overscale look. Is this possible. Do I use curve to project them on? I realise I'd need to make solid lines and use boolean to cut them into the surface somehow?
G
From: Gord (NEOMEGA)
Thanks. It's because I come from a modelmaking background so will be trying to do things as I would in the real world! I'll give that a go.
From: Michael Gibson
Hi Gord, yes it's possible to cut grooves, check out here for some previous discussion:
http://moi3d.com/forum/index.php?webtag=MOI&msg=3859.2
http://moi3d.com/forum/index.php?webtag=MOI&msg=4162.8
http://moi3d.com/forum/index.php?webtag=MOI&msg=1654.2
- Michael
From: Michael Gibson
Hi Gord,
re:
> Thanks. It's because I come from a modelmaking background so will be trying to do things
> as I would in the real world! I'll give that a go.
Yes solids and booleans for mechanical parts matches up pretty well with real world manufacturing with stuff like a cutting tool removing material from stock.
The "skinning mode" type approach doesn't match up so well to real world processes, that's part of why it has a longer learning curve.
- Michael
From: Frenchy Pilou (PILOU)
Normally for building classical hull just sections and "Loft" them must do the job!
and for drawing them just half sections! :)
I believe even the name of pro builder boat's hull in real world is named "Lofter"...
Am i right ? ;)
From: Gord (NEOMEGA)
OK, pretty pleased how I got it so far with all your help! Now I try adding strakes to the outside of the hull using sweep and profiles with a rail progected onto the hull. It looks like it worked well. Except when I try to join, it won't have anything, but when I try to boolean it on, it simply disappears leaving the profiles and rails.
Image Attachments:
Screenshot 2020-06-11 at 23.15.13.png
Show messages:
1-10
…
31-50
51-70
71-90
91-110
111-129