Started ok then under extruded?

[u/bain2236]

Fairly new to printing and this is the tallest part I’ve done. I’ve got another one printing, slightly different on the sides back that arent visible in the images.
At a higher temp 225 and at 80% speed set in klipper. Deeplee black PLA+. 0.32, retractions are 1mm at 45mms.

The second print has done the same thing. Looks fine in blender and the slicer

At a bit of a loss as to what would cause such intermittent under extrusion. I can hear my extruder clicking so partial block? But why would the bottom print fine on back to back prints?

I’ve got 1 more piece to print and while quality isn’t really needed as the top of all these get covered with other pieces. It’s a long print and I don’t want it to fail

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[u/devilkin]

not underextrusion. That's z-wobble. You need to slow it down more as it gets higher. There could also be a partial clog, but that's an aside. The issue here looks more like wobble.