The bot is great. I'm pretty new to 3D printing, and this model made entrance into that seemingly daunting realm quite painless.
Very glad I bought the assembled version.
Very accurate. 50 microns is 0.05 mm. That's 1/20th of a millimeter, or 1/200th of a cm. Small.
Small footprint. ~20cm x ~8cm.
Not the fastest machine. I'm printing at 40mm/s consistently, at 0.1 mm layer height, and prints turn out beautifully. For 0.05mm I turn the speed down to 20mm/s, so the print takes *forever* but the results are astounding.
Should you buy it?
This is an American-made product, and it definitely feels like it. Works great, very solid construction. I highly recomend the y-axis upgrade, as it makes the price-per-cubic-cm lower than the Printrbot Simple Metal.