The stuff looks cool ..
but it is not really any big innovation.
It´s somewhat like ganging up 4 spinning jennys as the catalans did here in Spain, after stealing the tech from england or scotland.
They used to work for the factory and copied the prints at night.
True story.
The SLM website youtube video states 21 hours to build an engine core --
this is very good, and I am sure it can be maybe 300% lighter and-or 200% stronger for the volumetric area.
-- and maybe 5x-10x faster than any other 3d metals printer.
Great. Hurrah.
But so what ?
A 600k machine costs about 150-200-300$ an hour to run with all the materials it needs, 250 kg mass in hoppers was mentioned.
If it can run un-attended, perfectly, it might make 365 parts/yr,
all for 600k/5 = 120k/yr in machine costs or about 3000$ per part plus consumables, operators, dpereciation, interest, secondary ops, finishing, qc, etc.
So every engine core costs about 4-5000$ as-is without liners, finishing, or anything.
Around 10x more expensive and slower than current practice.
Lighter, and stronger, but vastly more expensive.
No real mass-market use.
Vs 300$ per casting and 500$ for one with finished bores, typically done with diamond rigid hones that take 15 secs per cylinder and the tools last 300.000 cores per year.
Partly according to one of the big manufacturers I visited, making auto parts in qty, with 21 plants globally.
A finished typical basic engine is about 3000$ to an auto manufacturer, qty 300k /yr.
Thats an assembled engine in running condition with camshafts, and main shafts, valves, everything.
A 70k Haas is about 3k€ a month, and with operators tools and stuff the run-rate is about 40€/hr.
Give or take 10€/hr depending.
I don´t see any benefits, profits, or hoopla in the additive manufacturing froth.
It´s possible, even likely, imho, that additive manufacturing via multiple lasers will become commonplace.
But this will be with 50k machines that make multiple parts at once, maybe 3-10, perhaps using 10 lasers optically separated into 100+ streams to cut the processing time down to 3-6 hours for a similar engine core part.
The race is like disc drives 30 years ago.
Or RAM, or processors.
The current 3DP tech is almost useless, due to cost/part, but the cost is likely to drop 1000x fold within a few years, 5-8 years maybe.
I struggle to see any current 3D printer maker surviving the transformation.
Probably a few will, but it´s impossible to know which ones.
Imo.
They need to gear up and plan for making the current 600k printers into 40k printers with 10x the capacity in terms of hexel resolution and sintering speed, within a few years.
The current makers like SLM are like the compaq PC of old, or the old IBM PC division, or old Cisco.
Excellent tech, for the time, but vastly over-engineered and expensive-to-make for the results.
I´m quite sure that cheap commodity laser sintering will appear in the near future 5 years.
But the price point will be 10x+ lower than now, and 2-3x+ lower within about 3 years.