To make this germinator cover, you need to use your print parameter to ajust the fill and perimeters as shown. A perimeter of 5 and a rectilinear fill 0.3 did a nice job.

This is my first project :-)
It was made in an afternoon in 3 iterations at EchoFab.org in Montreal in collaboration with Marc Olivier.
Using a very simple design a cylinder and adapting the parameters.

The first iteration used a desing made with OpenSCAD. But after printing the first one and checking various projects already made at EchoLab, we did tried to use a simpler design made with SketchUp and played with perimeter and fill on the Ultimaker.
On the second iteration a height of 1mm was tested.
On the third iteration a height of 2mm was tested and the result was more than good enough to use it at home and start sprouting :-)


Thanks to Marc Olivier at EchoFab.org for his inputs, advice, knowledge of all the paratemers and training.