Summary The ones I printed before were too small to provide the height I was looking for to get good airflow. I would like to give credit to the persons who did the original design. These are considerably larger and longer than those. I am working on figuring out an add-on or method to help them not to slide while in use on my lapboard. Print Settings Printer Brand: MakerBot Printer: MakerBot Replicator+ Rafts: Doesn't Matter Supports: No Resolution: 200 microns Infill: 10% Notes: I used a raft (but I use a raft all the time). I marked "Doesn't Matter" because I am certain the 3D Print Masters will not need one.