First Layer

Also known as: Initial Layer, Base Layer

beginner General

The foundation layer of a print, critical for adhesion and overall print success.

The first layer is the foundation of your entire print. Get it right, and the rest usually follows. Get it wrong, and the print may fail.

Why First Layer Matters

  • Anchors print to bed
  • Sets dimensional accuracy for base
  • Affects all subsequent layers
  • Most common point of failure

Perfect First Layer Signs

  • Lines slightly overlapping (no gaps)
  • Consistent width across bed
  • Smooth, not rough or blobby
  • Firmly adhered, not lifting

Common Problems

Not Sticking

  • Bed too far from nozzle
  • Bed not clean
  • Wrong bed temperature
  • Print speed too fast

Too Squished

  • Bed too close to nozzle
  • Elephant foot results
  • May block extrusion

Inconsistent

  • Bed not level
  • Dirty bed
  • Warped bed

First Layer Settings

Many slicers have separate first layer settings:

  • Slower speed (20-30mm/s)
  • Higher flow (100-105%)
  • Wider line width (120-150%)
  • No cooling fan
  • Higher bed temp (+5-10°C)

The 80% Rule

If 80% of your print failures are first layer failures, focus your learning there. Master the first layer and success rates skyrocket.