First off, Im a noob, Ive been printing for about 2-3 months roughly.. I ordered an XYZprinting DaVinci 1.0 printer and soon discovered that the factory firmware/interface was crap, so I flashed Repetier 0.92Mod onto my machine (and Repetier Host v1.6.0 on my PC). Ive been printing ABS ever since with little to no issues, until last weekend..

I print alot of personal vaporizer prototype pieces for myself and friends. I have previously printed these pieces multiple times with success, now, same file, same settings, im having a weird issue.. doesnt matter what filament brand I use..

- I double checked Calibration and found that only my steps per MM were off for my Extruder. (Fixed that, still no difference)
- I have tried almost every combination of speed/Ext temp imagineable.
- I have Leveled the HPB over and over.

The pieces pictured below were printed at:
Layer Height: .2mm
First layer height: .3mm
Infill: 13% rectilinear
No support or raft (only bare kapton tape)
Speed: 40mm/s (first layer 25%)
EXT Temp: ​225c (230c for first layer)
Bed Temp: 100c (110c for first layer)

Running out of ideas here... So any constructive input is welcomed!

Last note: These pieces were printed upside down so the "taper" is an overhang rather than facing up.


I dont even know how to explain this issue.
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Thank you for your time!