New to blender. question about smoothing

Hi all.

I purchased what it turns out to be a fairly low poly helmet that I want to 3d print. I have tried tinkering around but for some reason I cant get a completely smooth finish or make the walls thicker.

I have tried subdivide and smooth but the initial lumpy shapes are still prominent.

I have tried to extrude in several ways but I think the shape is too complicated.

I was wondering if anyone can see the model (not sure how to upload file or screenshot into the post but can email) and offer advice on how to get it print worthy. I am trying to make a helmet for my boss who is retiring and has done a lot for me. I think it is a nice thought, but only if it doesn’t look like its made of Lego haha.

Thanks in advance

Raif

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Hi and welcome, without seeing anything is a little complicated (at least for me…), to upload an image just drag & drop the image inside the message form.

thanks for the quick reply!

hopefully thats helps

Raif

Ok, even if I’m absolutely no expert in 3D printing (for now… :grin:) looking at the grid at a first glance it seems a LOT big, my advice is to scale it to real world size and then APPLY the scale. I see that the model already has some thickness so I don’t see any reason you should extrude it, unless you would like to modify it.
And subdivide and smooth it seems absolutely doable to me, below a little example.

  1. Original mesh (no subd and flat shading):

  2. Subdivision and still flat shading:

  3. Smooth shading:

Done.

In your case you may also need some bevel/supporting geometry/crease on some edge to retain the shape.

Hope it helps.

That’s brilliant thanks, I think I may need to look into the bevel/supporting etc because when I do that it doesn’t usually look as nice as your pic haha. also I know its large, but that ok because I can scale it down depending on the printer without loosing and detail.

I’ll keep you posted on my progress.

Raif

The smooth shading is simply visual trick that doesn’t smooth the geometry at all… this is doen with an aproicate level of subdvision.

In traditional subdiv workflow someone has to add “support loops” to maintain the “edgyness” of some… edges. This said: blendee can do edge greases ( shift-E mouse drag) to do somethign like thsi:

Additionally this is subdiv level 2… depending on your printing scale this might be raised to 3 or even 4 in export…

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hiya. I have gotten the smoothness required but my R is bloated out.

I have tried creating a sharp edge but no matter what way i move the mouse i loose the detail.

any other tidbits would be geat.

Also I wanted to add the thickness because when i resin print the model, the walls are less than 1mm thick. I would like to get to about 2 mm min. I have tried solidify too btw

all the best

Raif

This may depend on your topology (support loop…) of the R… and/or the “greasing” :wink:

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thanks very much haha… so im assuming there isnt much i can do about the distortion to it then? no amount of greasing?! lmao

Well… if you provide some wireframe screenshots soe someone coudl judge this…
…or even a blend file (only the R part with some additional polygons needed… ).

You can do anything you want instead, as I said before you just need to give support to the edges of the R but, as Okidoki also said, the best way to do it depends on the topology of the mesh.

Blockquote
Also I wanted to add the thickness because when i resin print the model, the walls are less than 1mm thick. I would like to get to about 2 mm min. I have tried solidify too btw

I think it’s a bad idea using solidify modifier on a mesh with thickness already.

Thats everyone. This is really great.

I have actually mabaged to protect the R i think using crease? I was frustrated and clicking haha.

Thanks again for all the suggestions… now just to work on thickening it… even if i have to extrud each face haha

Raif

Great. Regarding the thickness: if there are no alternative tools within the 3D printing software, I think it is better, fast and clean to directly remove the internal faces of the model and then apply a new solidify modifier. And remember what Okidoki said about smooth shading in 3D printing.
If you want, I’d love to see some images of the printed product!