When i printed the Hand Cranked Heart gear (http://www.thingiverse.com/thing:253934 and http://www.thingiverse.com/thing:243278) the large gear kept skipping because of too much space above it. I printed this ring and now everything is running smoothly!
The model was printed with ColorFabb Woodfill (0.15 mm layers) on an Up Plus built into our ''Driedeebox''.
3DWP delivers service in 3D printing/scanning/designing. We can be of great value because of our extensive experience in Additive Manufacturing.
3D Print Service 3DWP website: https://www.3dwp.nl
Website about free 3D printer software: http://www.gratis3dprintersoftware.nl
3DWP on Shapeways: https://www.shapeways.com/shops/3dwp