The most convinient 3D-printing service is without doubt Printapart .
They have a very good model checking feature, easy quoting and fast, reliable service. But unfortunately, the quality of the parts is not state of the art. The picture above is the same part as the brass casting, this time from PAP.
I am still wondering if I should order parts from PAP for a complete model. Examining the parts in extreme closeup shows that they are somewhat coarse, but maybe a painted and weatered model will look crisp enough. I am leaning towards making a full-blown test, it is the only way to settle the matter. For those working in scales larger than 0, I feel the quality is good enough. Several very ambitious modellers have shown what can be done, and it is of course only tme before the smaller scales can enjoy the same possibillities.
There was no cleanup before taking the picture, this is the part straight from the printer. You can see the slightly grainy surface. This is ok for the planks, but bad for the metal fittings of the prototype.
The part has some wax on it, so a light wipe with acetone will be the first step in prepping the part for painting. You should be careful with the acetone, It can soften the plastic. A coat of primer will probably reveal how suitable the surface of the PAP part s really are for my parts.