Any furnace capable of sintering metal parts is unsuitable for office deployment and will at a minimum need a fume hood and a way to vent the (very dangerous) fumes in a safe way. Typically that means you'll be operating machinery like this in an industrial setting.
That and desktop sized muffle furnaces have been around for half a century and can be purchased for under $1,000. I see a 12.7 x 10.8 x 15.2 cm one in my company's catalog for $870 so I don't consider this a huge breakthrough.
One advantage of microwave sintering over older methods (like muffle furnaces) is more even heating because energy is deposited throughout the volume of the part, not just at the surface.
Reduced thermal gradients -> more predictable post-sinter part dimensions and more uniform mechanical properties. Those are yield enhancers that could give significantly better production economics.
