Although I’m still waiting my Glowforge, I start to think what am I going to make when I get it.
I’m thinking to engrave a 3D metal soccer ball.
I’d say I’ll choose stainless.
Can anyone give me some advice if I want to made it in “one piece”(without any further adhesion)?
I’m not sure that I understand what you are trying to do. If you want to make a mark on a stainless you will need to use a product like Cermark to do it.
This laser will not cut into metal. It can engrave the coating away on certain coated metal objects like anodized aluminum, but that is all it does. It doesn’t actually engrave into the metal itself.
My immediate answer is identical to @Jules’. I’ve never seen a 3D metal soccer ball before. I’m guessing perhaps it’s a pendant? If you have a link to one maybe we can help better. But let’s presume this 3D metal soccer ball is, in fact, stainless. Glowforge cannot engrave or cut stainless. At least not directly. But I wouldn’t call it “bad news.” Cermark is your answer. I haven’t used it yet myself. But I’ve seen the results in several YouTube videos and I think you’ll be quite happy with it.
We can’t do that with a Glowforge with sheet metal, because it cannot cut metal. After plasma or CNC cutting this design, it still requires further adhesion (welding).
If you want that final product to be metal, you could possibly produce a 3D engraved version of the soccer ball in acrylic or something, then use that to create a silicone mold, and then use the mold to cast something like pewter. (first video)
You can also apparently cast a metal called bismuth-tin in silicone. (second video)
And if you’re more interested in the end result, and less interested in a fun DIY project, Shapeways can appatently 3D print stainless for you.