I needed to mount this ridiculous "web camera" on my desk, it has a 150mm dome, and I have a 140mm UP! printer. This is what I came up with, and amazingly it works quite well, and is fairly stable.I printed it on an UP! 140x140x135mm printer, which is why the base is curved. Otherwise it would try and overprint the 140mm perf board. If you have a similar printer, the STL file is actually a little to high, just scale it down in the Z dimension by 10%. (Press Scale, type in 0.9, then hit Z+. You'll have to turn it upside down before you print it, too. I printed mine with no raft, 0.40mm Z resolution, Normal quality, and a Hollow fill (for other folk, that's not literally hollow, but probably equiv. to something < 30% infill - guessing). It used 142.1 grams of ABS at any rate. The resulting print did have a little bit of bend in it, but was well up to the job.