This is a rather simple fractal sphere made with Mandelbulb 3D (more information below along with the specs for my personal print). The model itself isn't too big and doesn't really need much support, though a little might not hurt in some of the larger grooves. The ball is NOT a perfect sphere! In fact, I've oriented the .stl to reflect this: there's a small, flat section on the ball that comes as a result of the way that the fractal was created. I'll see if I can't use Meshmixer to smooth it out, but for the moment, it is what it is. (You might not mind. The pattern continues over the area, and though it's small, it's large enough to balance the finished model without issue which could be desirable for display purposes.) This is my first attempt at creating a mesh and slicing it with Mandelbulb 3D, and there are still a LOT of faces and vertices. If this sort of thing bugs you, go ahead and run in through MeshLab and smooth it out more, but Cura and my UM2 handled it without a hitch. Hope you all like it, and good luck printing! :) My print: I used a UM2 at 50mm/sec for precision sake just at 0.1mm with 20% infill, and I also used the default brim and a 5% infilled grid for support just to start testing with. These settings all seemed to work fine for me with PLA and cooling fans on. (Cura says it used 15.3m of material, weighing in at 121g with supports and taking around 20 hours at 125% of the shape's default size.) More on the fractal: So as I said earlier this was made with Mandelbulb 3D, a free software which can be downloaded at http://www.fractalforums.com/index.php?action=downloads;cat=5 This model is a dIFS fractal (a HeightMap2IFS). If you want to make your own, select that particular dIFS fractal, choose MapNr 13, change H offset to -2, X and Y scale to 0.5, H scale to 0.26, and (most importantly!) No Plane to 1. Alternatively, the exact parameters are: Mandelbulb3Dv18{ g.....w....o0...w....2....kO3t6ShFkszajA/tagVp0EM039OnvIzvnxKwLN6DgkzWOoLA.rSAxD ................................NSIwlfEvF.2........A./..................y.2...wD ...Uz6....k2..../M.0/...........8.....E3.....Uzcb7Du//oD/..........G0dkpXm1..... ./EnAnQD12../..........wz................................IU0.....y1...sD...../.. .zHnAnQDXCc0lXSEEx1..........OV.vosrWebjKaJJCLjxttHgzOV4jIE9z6uONmkxlyoDG09qBnTl LtXgF6o1r5vHzaoWbSl93omDU.....I41.............sD.6....sD..G.0................... .............oAnAt1...sD....zw1........................................./....k1. .....Ksulz1.......kz.wzzz1.U..6.P....U5...EB....m....c3....F....6/...I1.....SF52 ...U.qFG9yzb2zzzRYoWzz7lz16.pc..zXCc..kvrEtMc7xD6ocyFE0ujz1..........2.28.kFrA0. .Ub96aAIVz9.1se7Umvxz0........../EU0.wzzz1...........s/...................E.2c.. zzzz.............0...................2./8.kzzzD............8.................... /EU0.wzzz1...................................2CcN/UvNPcveeWCNq0.yRiibHJJUk1f..XR SvBmx3CcN/UvNPcvQsLsUa3.ibhVi1bTV1OK.sSq4uCly3CcN/UvNPcvMwLsUa3.ibhVinqTV1OK.sSq 4uCkz3CcN/UvNPcv..EsUa3feeWCNqGQIJ36wk8EwyLsUa3f................................ E....2..F2E.....I....w.....GZZqNcFLHV/bA7NoI.........................6E./2E./2U/ 4MU.02E.0.........U8./...............................1........yD........Uz1dkpX0 LD8oz...................................................kzXaNaNaNaNiz.........zD ........kz1.............} {Titel: Maze Ball 1}After making the Mandelbulb 3D object, I used the Voxelstack option to create slices, then make an .obj file from it with Fiji ImageJ (I suggest using one of Don Whitaker's YouTube tutorials for this as ImageJ is absurdly complicated). I smoothed the final product in MeshLab and repaired it in Netfabb (to remove internal pockets, etc.). I actually printed my model on an Ultimaker 2 with PLA.