Please recommend a commercial grade 3D printer.

[curious aardvark]

10k is interesting that puts you into several categories.
You can buy something like the hyrel, which has multi use heads.
You could get a second hand laser sinter machine for powdered nylon.
You could but 4 ultimaker 2's
You could throw in some change and buy a 3dp ulimited giant printer - 1mx1mx50cm volume.

You could buy 2 ultimaker 2's and a hyrel.

Whatever you do get more than one printer.
maybe a fancy commercial one and a couple of cheaper FFF ones for playing with. (flashforge dual extruder machines run at £429 each - get 25 )

Lot of options.

Maybe a big delta, a hyrel and an ultimaker. Cover your options.

The art department would love the hyrel. Gives you the ablity to print with clay, silicone - pretty much any extrudable substance you can cram into a giant syringe.
http://3dprintboard.com/showthread.p...yrel-3D-Videos

Don't think you have to buy an expensive big commercial machine, because you'll not get much for £10,000
Whereas you can get a variety of semi-commercial machines that might suit you a lot better.

It would also be worth looking at a formlabs form1+ resin printer.

I reckon you could get 3 really nice machines with different capabilities that would allow a lot more scope to the projects the students could undertake.

I'd start with a list that contained a form1+, An ultimaker 2, a Hyrel, a shitload of pla and resin and then a couple of flashforges with the change :-)

If you're worried about longevitiy geoff's been running his flashforge (sub £500 dual extruder 9x6x6 inch volume)) for a couple of years non-stop, and hasn't killed it yet lol

OR you might want to geta scanner as well. Though personally I'd wait a while for the price to drop and the quality to rise.

And learn openscad - and maybe tinkercad as well. Both free, both very good.
I prefer openscad, but I'm not artistic so it suits the way I think much better.