The first layer is the foundation of a channel letter.
The first layer of your 3D print is the foundation all subsequent layers are built on, which makes it important.
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A proper Z-offset will make sure a perfect first layer
What is a Z-offset?
In Speed X Series 3D printers, the Z-offset means the initial distance between the nozzle tip and the build plate when 3D printing the first layer.
So the distance will affect the first layer print quality like below ↓
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How to set a proper Z-offset?
Please click Z-offset to check the Z-offset setting guide.