My main reason for getting my Rostock was for costuming props, so here's another costuming prop I've been working on, which is the bracer for my Batwoman costume, the black one on the left obviously is the 3d printed one, the red one on the right is my original hand laid fiberglass one. The old was was a bit too bulky in the way it fit and it didn't fit well so I decided to print up new ones in 3d.
I'm very happy with how the 3d printed one came out, I ended up having to split the main body of it because it broke loose from the bed so I just cut off the spaghetti, measured, cut the model appropriately printed the rest and bonded them together. This was printed out of abs, also since regardless of how fine the print layers are I still would have to sand it to get it perfectly smooth to paint I just choose to print larger objects like this at a .4mm layer thickness for faster printing. I will say too that i'm loving the weight, or lack there of with the 3d printed parts, the abs one is significantly lighter than the old fiberglass one.
Batwoman bracer
Batwoman bracer
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Re: Batwoman bracer
You should definitely look into acetone vapor smoothing, it can completely erase layer lines in ABS. 
Re: Batwoman bracer
Yeah, that's definitely something I want to try out, i'm just looking for something large enough for large props like this and safe enough, I like the pressure cooker method I've seen though the pressure cookers I've seen have been too small, I've also been debating getting a large crock pot for it, while it heats up slowly it should get hot enough to vaporize the acetone and it's large enough for large prints. for now I've just been brushing on an abs acetone paste to help fill in the seams between layers and then sanding.