Wanted a grip for my E-M10, but didn't like the metal ones on Ebay as they're too cold/heavy/not big enough, so I created my own.
This is for the MK1 version of the Olympus E-M10 and I'm pretty sure it won't fit on any of the later versions.
I printed the one in the pics at .2mm layer height which I think looks pretty good. .1mm is certainly a bit smoother, but I didn't want to wait for it to print. :)
I did not sand the unit before staining, but the Hatchbox wood-filled PLA does take pretty well to sanding. I tried sanding one and it did look nicer and take the stain better, but it took most of my life to sand.
I stained the one in the pics with some MinWax PolyShades "Bombay Mahogany" stain/poly. And then put another coat of "Pecan" MinWax Polyshades over that because the Bombay color smelled so strong even after a week of sitting!
I used a little tripod mount screw from Amazon to affix the grip to the camera.

PS. I think the STL file might come in upside down. Just rotate it until it lays flat on its base.

FLSUN QQ

Doesn't Matter

No

.2 (or .1 if you're more patient than me)

50%

-Sanding makes it take the stain better, but takes forever to sand. :)
-STL file is upside down, (I think) so just rotate it until it lays flat on its base.
-STL file is large in file size because of the output quality. Otherwise the radii came out faceted which makes me crazy.