Create a "hard" knurling on a smoothed surface

3D Design Volume Model
1

Hello

I am looking to give a diamond faceted effect (same principle as knurling) on a molded plastic shell. Problem: the part is left, a combination of smoothed surfaces. I don't want to be satisfied with an appearance because the automatic processing of the file (by the 3D printer for the prototype for example) would only give me a smooth side. So this is the rendering I'm looking for, but in real relief:

I attach the source file (SW2013) to play.

Thank you to those who will look into my problem.

Sebastian


knurling.sldprt
1 Like
2

/sites/default/files/from_ckeditor/moletage.jpg

2nd attempt to integrate the visual which doesn't seem to pass in the question above


moletage.jpg
3

Hello

 

I suggest you register your model in . Stl or other, by putting a rough resolution.

 

By taking your model, it gives the attached image

 

The subject has already been discussed, but I can't find the post anymore...

 

 


facette.png
4

I hadn't seen the image, so much for me.

 

You want to reproduce a fleece "texture" on a model so that it can be printed later.

 

For me, the only way to make this effect usable is to model it. Have a good base, and then recreate the effect.

 

 

5

By drawing a square. A material removal with a 45° draft.

And one repetition per curve.

 

edit: and as soon as SW is finished, I transfer the piece. Promised.

1 Like
6

Here. Well it's to be refined according to what you want obviously.

edit: and to get the smooth face between the 2 diamented surfaces, by splitting the 2nd sketch curve repeat guide it will do what you want.

 

 


2014-12-18__moletage_diamant.sldprt
1 Like
7

Hello

The solution works well on a swept surface, but not smoothed: the shape is lost in the mass as it rises (see attached photo). I've already tried by building my base volume differently to use this type of repetition, but without success. Thank you for this first idea, I keep digging.


2014-12-18__moletage_diamant.jpg
8

even if we take a tange to the sketch?

 

edit: then you may have to do it in several times if there are too many variations.

but I couldn't test it today...

9

The problem with your knurling is that you have left surfaces

I even did a test by creating sketches via projected lines

it is difficult to create cleanly, either

_ an elevation of matter

_ a parallel extrusion that is perpendicular to each other 

A solution may be to facetize your surface in X small square (or geometric shape of 4 sides) and make

a sketch/square or (geometric shape of 4 sides) with an angular extrusion to create each point

here is my feeling

but it's a lot of work ;-((

@+ ;-))

1 Like
10

Maybe by splitting your large surface to have several guide sketches (or just adding some with sketches projected onto the surface) it will work better.

11

And making your diamonds on a flat surface.

And then deform this resulting surface to plate it on your part.

And a subtraction between the 2 bodies.

Can it work??

12

Thanks for the ideas, I'll hold and dig the last one, deform to plate the flat diamond surface. The others have the disadvantage (apart from the fact that they are very time-consuming) of losing almost all the interactivity and the configurable side: projected sketches have the unfortunate tendency not to rebuild themselves when their sketch plan or their construction volume is moved. So if I decide to change the size of the diamond tips or a leave on my base piece, goodbye all diamond tips. I need to keep a parametric design.

I was hoping to find something in the stampings, nothing on left surfaces :-(

It would be possible to create square holes with milling, the drilling function allowing to stick to any surface. All that remained was to place regular points in 3D sketches. But no "square hole" parameter. If a tinkerer knows how to find and modify the sketch used to make countersunk holes in the drilling function...

In the meantime, I am digging the deformation track, but with little hope...  

13

After many trials, I finally had to resign myself to transforming my volume into an assembly of extruded volumes and revolution instead of smoothing. It's a pity, something is really missing here, as this solution imposes multiple shapes and dimensions of the pattern so as not to see the seams. So a lot of time and an aesthetic that is not respected. Thank you to those who took their time to help me.

Sebastian