Terrible first layer - 3D Printing / 3D Printers - Talk

Hello, I recently bought a Printrbot Play, and I’m experiencing some problems with my first layer. The first layer looks acceptable for small objects, but when I print some bigger objects (with a greater surface) it just looks terrible. As you can see on the picture, it looks like the infill is way to big to fit inside the perimeters of the first layer. It is actually crossing the bottom perimeter, and causing the layer to “wave”. The small square on the left has this issue also, but less

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