r/AdditiveManufacturing

Question for the folks actually running metal AM, not just reading about it.

When you look at different metal powders for laser / e‑beam systems, what turned out to matter the most in the real world,, particle size distribution, flowability, O₂ pickup, or just how forgiving the alloy is to process? i see a lot of marketing around spherical, high purity powder, but not as many details on what actually made a difference on the machine and in post processing.

i’ve been browsing a few metal 3D printing powder catalogs to get a feel for what alloys and spec ranges are common in production, for example: https://www.samaterials.com/405-3d-printing-powder.html curious what you’ve learned the hard way about powder selection and what you’d tell someone speccing a new process today.

Hey everyone,

I’m looking to buy a high-end desktop or prosumer FDM printer to manufacture non-metal, functional parts for US government contracts.

Because of strict federal supply chain and cybersecurity regulations (NDAA/ITAR compliance), the printer cannot be manufactured in China or run on software that connects to overseas servers. This unfortunately rules out consumer options like Bambu or Creality.

Here is what I am looking for:

Materials: Must be a workhorse for high-temp engineering filaments (Nylon, ASA, and potentially high-end composites). A fully enclosed, heated chamber is preferred.

Origin/Software: Needs to be built in the US, EU, or other compliant countries, with open-source or highly secure offline slicing software that won't fail a data security audit.

Budget: Looking in the $3-8k range, but willing to stretch if the reliability and compliance are there.

Workflow: Looking for consistency. I don’t mind a bit of initial tuning, but once it’s dialed in, it needs to repeatably produce identical, high-quality functional parts.

Right now, my shortlist includes things like the Prusa XL (Czech Republic) or a LulzBot TAZ Pro (US-built).

Has anyone here done contract production work under these kinds of security restrictions? Are there other professional, Western-made brands in this price bracket I should be looking at?

Thanks for the help!

Been having issues finding a proper company to make products for me in smaller batch quantities depending on price. Anyone have a suggestion? Must be USA based due to nature of products, no license needed for what they're making

I was looking into Simply3D and it seems interesting, but I was wondering if anyone had any experience with it and would be willing to share their thoughts and comments.

Does its performance justify the price point compared to other free slicers?

How does it compare to other slicers such as Prusa and bambu?

"Anyone else getting creative with plastic vacuum forming machines?

I've been playing with my plastic vacuum forming machine for a couple of years, mostly for simple external packaging shells and the rare custom mould for small business prototyping. But after recently going down a rabit hole scrolling through material on Alibaba I was BLOWN AWAY how creative people are getting with this tech.

I was scrolling through a Bilibili the other day where someone was form-printing and laser cutting layers together into like a fusion of textures!! Jewellery moulds with LED cavities, visors for cosplay that curl around the face etc. Custom roll forms for chocolates was crazy. The guy literally 3D printed like a figure, reversed formed a plastic shell on it, poured it with his melted chocolate and literally made a figure replica of it!! Crazy.

I find it nuts the amount of applications for vacuumforming that are coming out of the woodwork. The random desktop machines like mine are used for schools STEM projects, people making sculptural lamps and decor, and small businesses are using them for their own blister packaging so they don't have to pay through the nose for custom boxes anymore. I watched one videos where someone remade their phonecase into a mould to form their own! One even made a mould for concrete planters! The basic ""Heat/stretch/suck"" is so simple yet oh so versatile.

My vacummform machine ain't fancy but does the job for prototyping and small runs. Still feel like I'm only month or so into using it. Be intersting to hear other creative combos of materiales and things you mind up with?"