On 5/29/2020 at 7:02 AM, GregValiant said:You may need to review bed leveling process. There are a lot of youtube videos on it.
When the nozzle is too close to the bed on the first layer, the hole is effectively closed by the bed and the plastic can't get out. The nozzle should not be leaving marks on the bed (it should be "1st layer height" above the bed.)
When your second layer starts the head has moved up and flow starts.
I agree with GregValiant. In addition, you should listen for a clicking sound which is caused by the extruder trying to push the filament through the nozzle but unsuccessfully doing so (a good indicator that the bed is too close to the nozzle . Once you have properly bed leveled with some paper or very thin cardboard, make sure to check that the first layer cannot be easily scrubbed off using your finger.
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GregValiant 1,141
You may need to review bed leveling process. There are a lot of youtube videos on it.
When the nozzle is too close to the bed on the first layer, the hole is effectively closed by the bed and the plastic can't get out. The nozzle should not be leaving marks on the bed (it should be "1st layer height" above the bed.)
When your second layer starts the head has moved up and flow starts.
Edited by GregValiantLink to post
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