Did we have the conversation over the Gray PA-12 specifically, or PA-12 in general? If the Gray PA-12, I must have missed it, sorry.
The White Natural plastic I found with more reading, is PA-12 plastic, and seems to be used with a laser fusion printing technology.
The Gray PA-12, Shapeways claims is an HP proprietary product specifically to be used with their Multi Jet printing process. Reading about that, it seems an inkjet printer "draws"/sprays a heat conducive chemical in a pattern on a bed of plastic powder, then heat lamps are applied, and the chemically sprayed powder melts/fuses. Then another layer of powder is put down, sprayed and heated, and this is repeated until the product is fully printed.
With the earlier laser fusion process, it seems a laser head directly melts the plastic powder beads together, and "draws the design as it goes."
If I am understanding all that I read correctly.
So, my question then boiled down to whether this new HP print method with their new, more expensive specialty powder, would produce a better print than the previous--somewhat related--white PA-12 powder and printing method. Would the print quality end up better?
Seems from your photos, Lars, the answer is..."Not much." At least not enough to justify to me the additional expense. Sort of what I suspected once I started reading that they were both PA-12 material, but it is nice to know more certainly.