I worked at Boeing for 30 years. Long ago there was an article in the Boeing News (internal publication about stuff at Boeing) regarding “sintering”, i.e. 3D printing, additive manufacturing, whatever name you want to give it.
Boeing had some technology (I don’t whose) in Mfg R&D which they found useful for prototyping parts - but it was basically an experimental toy with no practical production value. Either the parts were too crude and required too much after-work, or the process too slow, or whatever. The technology was just not competitive with traditional manufacturing processes such as precision casting and various removal machining processes (i.e. routing, lathe operations, etc.).
I retired in 2010, and have no idea if any 3D processes are now in use for Boeing production, either at our primary parts fab plant or major sub-contractors. My guess is, if so, it is very limited.
I was invested on DDD for a while, made some money, then watched it go down, sold before all my gains evaporated. This is fascinating technology. There’s no doubt about it. But I really struggle with trying to envision where the market is.
The notion that everyone will want one in their home just doesn’t make sense to me. There are a few tinkerers and would-be inventors who might buy one, but wide-spread home adoption is unlikely IMO. What are you going to make that you can’t buy more easily and probably for less total cost? And before you “print” your creation, you have to come up the design s/w learning curve - I don’t know, but I suspect that’s a big time investment.
As for manufactured production parts - I’ll concede that additive manufacturing will find a role. I can see it especially appropriate for medical applications where each time a “part” is required it needs to be customized for the specific application - no two whatever it is are identical. Perfect application for this technology. Maybe dental labs are already using 3D printers, I don’t know. But when it comes to production of high volume, replaceable parts, IMO the opportunities for 3D applications diminish pretty quickly. There will be some, maybe some assembly operations can be replaced with higher strength 3D parts. Prototyping will provide a market. Short production runs of unique parts (i.e., spares for out-of-production parts) will be a market . . .
But, add all these markets together, I don’t see a lot of printers being sold. I’ll look elsewhere for investments. I’m not enticed by any of the companies in this whole segment.