I made a number of these pieces and then a frame to put them in. The frame can be downloaded here: http://www.thingiverse.com/thing:2125154 You need a big printer since the frame is about 345mm in diameter. The frame and pieces was made on a Go Big 3D Genesis 8 printer.
Go Big 3D Printers Genesis 8
0.5mm, but doesn't matter.
As long as your printer is big enough it is a very easy print. I printed with bed set to 60C and hotend to 200C on a Go Big 3D Genesis 8 printer. You can always scale it to fit your printer or break it up into separate STL files. If you scale it down, make sure that scale the pieces the same percentage. This frame is about 2% larger than the pieces and they fit nice and tight.