11 votes
Accepted

Why can't powder-based 3D printing techniques create enclosed or hollow structures?

It's not hollow or enclosed structures that are a problem. It's structures that are hollow and enclosed. Think about it. The machine lays down a thin layer of powder, and then a laser fuses some of ...
user avatar
8 votes

3D Metal Printing

Printing metal (directly) is done in mainly two types: Laser Sintering (LS), where a metal compound or alloy is sintered into form. For example, Tungsten Carbide is Laser Sintered. Common shorthands ...
user avatar
  • 19.5k
7 votes

The weirdest DIY 3D metal printing

I think this is just an overcomplicated lost-PLA (investment) casting. What you're asking for is to create an object, create a mold around it, and then burn out the object and replace it with metal. ...
user avatar
  • 318
7 votes

3D Metal Printing

Anzalone and friends published A Low-Cost Open-Source Metal 3-D Printer in IEEE Access: This paper reports on the development of a open-source metal 3-D printer. The metal 3-D printer is controlled ...
user avatar
  • 916
5 votes

3D Metal Printing

FFF/FDM You can create a metal object via metal casting or using a special filament containing metal parts. Metal filament You print with a special filament that contains from mixture of metal and ...
user avatar
  • 1,911
4 votes

Can 3D printers print details in the 1/10 of the micrometer for metals?

You can get the 0.1 micron (100 nm) resolution with a 2-photon 3D printer, but only in a polymer resin. Nanoscribe, in Germany, pioneered this technology, see Mechanical Microstructures. Their ...
user avatar
  • 180
4 votes
Accepted

Additional mods for printing metal filled filament with Ender 3 V2?

There is a lot of misinformation in the 3D printing world about "all-metal hotends" being an upgrade. Some of them, especially clones, are not even all-metal but just poor lookalikes that ...
user avatar
3 votes
Accepted

Sunlight powered metal 3D printer

Let's start with the obvious: this printer would need to be really big. Not because of a large print volume, but because it needs to collect a lot of sunlight or needs a really big focussing array. ...
user avatar
  • 19.5k
3 votes

Metal sintering layer-by-layer with DLP

SLS uses a high powered laser to smelt the binder of a ceramic or the metal itself. We are talking about at least a 40 W laser which focuses its power on a circle of about 50 µm. How much power are we ...
user avatar
  • 19.5k
3 votes

Can 3D printers print details in the 1/10 of the micrometer for metals?

There's atom-based-printing 3D printers that only some universities have. There aren't other 3D printers that can get even 0.001 mm precision, you want 0.0001 mm, that's pretty dicey. Just ...
user avatar
2 votes

Can 3D printers print details in the 1/10 of the micrometer for metals?

There are no 3D printers (that I'm aware of) that can do 0.0001 millimeters, hobbyist or industrial, plastic or metal. For that matter I think you'll be hard pressed to find a CNC mill with that type ...
user avatar
  • 1,855
2 votes
Accepted

3D printing and coating of heat-resistant objects, such as a turbine blisks or blades

You ask some very interesting questions! Firstly, when researching topics such as this, you will have far more luck using 'additive manufacturing' as a search term rather than '3D printing'. In the ...
user avatar
2 votes

3D printing and coating of heat-resistant objects, such as a turbine blisks or blades

I would think it's definitely possible, steel 3D printers are most likely capable of printing with the kind of precision you need (I've had experience designing and printing barrels for handguns as ...
user avatar
  • 136
2 votes

3D printing and coating of heat-resistant objects, such as a turbine blisks or blades

This depends primarily on economics and on desired lifetime. Rather obviously you need a material whose strengths and melting points exceed the operational specs. Determining the various break ...
user avatar
2 votes
Accepted

How to build a metal-based 3D printer?

I think this depends on what you are trying to accomplish with the 3D printer. I have seen people online build metal 3D printers from a robot arm and a welder this would probably be the simplest ...
user avatar
2 votes

3D Metal Printing

You can do lost-PLA investment casting, the actual gear to do it is kind of pricey unless you're willing to create your own DIY forge for melting aluminum. Check it out though, you don't need a ...
user avatar
1 vote

Metal watches 3D printing

I would imagine that the main reason that "major watch brands" don't offer free models is so that they don't put themselves out of business. The same goes for car brands and most, if not all,...
user avatar
  • 5,727
1 vote

Metal watches 3D printing

The way you manufacture a part has enormous effects on how the mechanism around it is designed. In a complex enough mechanism you can't just replace any milled part with a 3D printed one. Furthermore, ...
user avatar
1 vote

Can you recommend professional 3D metal printing books?

This is a free ebook that I have perused briefly which it looks interesting, and it is free (did I say that already?) 3D Printing of metals Manoj Gupta ISBN 978-3-03842-591-5 (Pbk); ISBN 978-3-...
user avatar
  • 5,727
1 vote

On a LENS printer, does the head move, or is it table that moves when printing?

Whilst this is not a definitive answer, if you watch the video on their website, LENS 450 Systems, it is the bed that moves in the X and Y axes - the head remains static. The bed also appears to move ...
user avatar
  • 5,727
1 vote

3D printing and coating of heat-resistant objects, such as a turbine blisks or blades

Some companies are already on the move with this idea. I think I remember hearing that Pratt and Whitney and Boeing are 3D printing some of the smaller air foils. The advantages being that they can ...
user avatar
  • 6,214

Only top scored, non community-wiki answers of a minimum length are eligible