(image above is just to update the thumbnail)
I started off with Z-spheres in a demo version of Z-brush, but quickly got annoyed with the interface and picked it up in Blender.
The idea is to pose it and 3D print different trophies for people who win the competitions at Regncon, a small RPG and board-game convention here in Bergen, Norway.
A few things I’m wondering:
I don’t know how big you can 3D-print, but I suspect that some of the details here are going to be too small, am I right?
Also, regarding posing: I haven’t used the pose-brush a lot, but will it do the job fine, or should I just get to retopologizing and rigging?
I’d also love some general feedback, I think the least appealing part of the model is some of the work on the scales/skin, and would especially like some advice on those
Look out for those spindly legs, if you want to 3d print this. Perhaps consider having the tail touch the base for additional support, or just thicken up those ankles
What format are you going to 3D print in? FDM (reels of PLA/ABS) or STL (Print using light cured liquid resin). This will dictate your limitations. FDM prints aren’t great at handling detail. The detail will be muddy and possibly add hours to your print time.
Remember that any overhangs greater than 60 degrees will need supports. The arms and the underside of the body will need a ton of support in this model.
Printing with supports isn’t ideal because the supports can leave “flash”, which will distort the details of the model and require potentially hours of clean up.
The use of supports increases the chances of the print failing as well, because there is a chance that a support won’t print correctly.
I recommend a few things to keep in mind when preparing your model for printing.
I agree with SterlingRoth- Lower the tail to the base and have it act as a support.
If you are using an FDM printer- get rid of all the scales. Possibly replace them with larger plates/spikes. The scales will not print well as they are, and could require hours of clean up if left as is. Speaking from experience- those grooves are a nightmare to clean up.
I’d recommend designing scales similar to the dragons in spyro reignited:
An STL printer can print the scales no problem, but there will be issues if you use supports and need to sand the flash off.
Retopo and rigging could save you some time in the future, but it isn’t necessary. For my models I’ve just been using Blenders decimate tool, or Zbrushes decimate tool before printing.
I think poses where the characters arms are held close to the body, or held vertically above the body, will make things easier. Here is an article about the 45degree rule that can better explain it: https://rigid.ink/blogs/news/how-to-print-overhangs-bridges-and-exceeding-the-45-rule
Hope this helps!
That is a lot of solid advice. I’ll keep these things in mind as I pose the character. I’m not sure what kind of printer we’ll be using, but I suspect that it’s resin since it’ll also be used for printing miniatures – so I suppose that means the scales are okay from a technical perspective?
I’ve been playing around with the 3D-print toolbox plugin, and one thing I can’t figure out is when it complains about “Zero Faces”. I would guess that means faces that have no size, or that aren’t filled, but these faces are all filled, and it’s weird if blender’s decimating would make sizeless faces:
Have you checked the normals of your model? Sometimes decimation causes inverted normals.
Turned on face orientation in the viewport and it’s all blue, tried recalculating the normals and it made no difference. I’ll try a different, more printable, pose and see if it isn’t one of those problems that mysteriously disappears by itself.
Returning to this after a test print and some fiddling. The printer uses resin and can definitely do the small details justice - supports also shouldn’t prove to be too much of a problem, so I’m not very concerned with that, but I’ve bulked up the legs and feet, and in posing I’ve lowered the tail to provide better support. After some trial and error I ended up just using Mixamo to make a basic rig, downloading it and adding some spine bones for the tail, and then applying that rig with automatic weights. It’s far from perfect, but it will do.
Here he is posed, he’ll be holding up a six-sided die:
The plan is to tweak the pose a bit more, fix some problems with weight painting, and then set it as a rest pose and fix the rest of the problems with sculpting.
This might be it!
I’ve sendt it off to the person responsible for the printing and painting (of course!) of the trophies. If it succeeds, my next post will be photos of a finalized trophy
I love the pose you picked! It’s so fun!
Finally the trophies are finished!
The models were hand painted by other members of the festival board, and mounted to wooden coasters along with plaques.
The models were printed on the side, and there are some marks from the supports.
Getting the five figures finished took some work, as the wrist holding the die had a tendency to break - we’ll have to fix that for future versions.
Thank you. The recepients looked happy as well