THIS IS A FIRST LAYER TEST FOR PRINTERS WITH ROUND BED
This test can be useful for ALL delta users. There are 2 STL files: 0.1 and 0.2 each has a 200 mm diameter.
If you choose 0.1 you can easily modify it by scale actions in your slicer. ATTENTION: most slicers has uniform scaling as default. Check it out.
I print on a glassplate you can see the results on my photos.
Depending on your print area you should TURN OFF brim/skirt.
Attention: Slice you model to have ONLY ONE layer and obviously don't use raft.
You can try all of your external infill patterns to see the differences.
See what has happened.
Too simple to explain.
Sketch a circle and extrude it.