Calibration and GF materials

I need to calibrate my machine; I do not have proof grade draft board but I do have a piece of draft board. It is not the same size as proof grade material. Is that necessary? It’s about 11 x 19… will that still work for me if I put it all the way left of the print bed?

What is important is that your material is absolutely flat. Cardboard will work as long as it is perfectly flat.


I see thank you …

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