First few layers of prints are curved

After getting though a bunch of initial calibration and tuning, I began printing some parts, but they all had a similar flaw. The first few layers are not flat and curve upwards toward the edges. It isn't severe, but it is noticeable and enough that parts that are supposed to fit together need some sanding or filing. Any common reasons for this? Some info about my setup: Duramic 3D PETG Black 250/80 no enclosure V-Core 3.1 400 SuperSlicer I'd upload my printer.cfg, but I'm in the middle of rebuilding it with ASA parts and Enclosure 2.0.
2 Replies
3DBoomer
3DBoomer2y ago
Check your extrusion multiplier... Should be around 0.95. What slicer are you using ?
sherbs
sherbs2y ago
Try getting a little closer to the bed to get more squish on first layer. Or use some magigoo or something to help with adhesion
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