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Bed Mesh

The Bed Mesh tool gives you a visual representation of the build plate's flatness — essential for good adhesion and an even first layer.

Go to: https://localhost:3443/#bedmesh

What is bed mesh?​

Bambu Lab printers scan the build plate surface with a probe and create a map (mesh) of height deviations. The printer's firmware automatically compensates for deviations during printing. 3DPrintForge visualizes this map for you.

Visualization​

3D surface​

The bed mesh map is shown as an interactive 3D surface:

  • Use the mouse to rotate the view
  • Scroll to zoom in/out
  • Click Top view for a bird's-eye view
  • Click Side view to see the profile

The color scale shows deviations from average height:

  • Blue — lower than center (concave)
  • Green — approximately flat (< 0.1 mm deviation)
  • Yellow — moderate deviation (0.1–0.2 mm)
  • Red — high deviation (> 0.2 mm)

Heatmap​

Click Heatmap for a flat 2D view of the mesh map — easier to read for most people.

The heatmap shows:

  • Exact deviation values (mm) for each measurement point
  • Marked problem points (deviation > 0.3 mm)
  • Dimensions of the measurements (number of rows × columns)

Scan bed mesh from UI​

Requirements

The scan requires the printer to be idle and the bed temperature to be stabilized. Heat up the bed to the desired temperature BEFORE scanning.

  1. Go to Bed Mesh
  2. Select printer from the dropdown
  3. Click Scan now
  4. Select bed temperature for the scan:
    • Cold (room temperature) — quick, but less accurate
    • Warm (50–60°C PLA, 70–90°C PETG) — recommended
  5. Confirm in the dialog — the printer automatically starts the probe sequence
  6. Wait until the scan is complete (3–8 minutes depending on mesh size)
  7. The new mesh map is displayed automatically

Calibration guidance​

After scanning, the system provides concrete recommendations:

FindingRecommendation
Deviation < 0.1 mm everywhereExcellent — no action needed
Deviation 0.1–0.2 mmGood — compensation handled by firmware
Deviation > 0.2 mm in cornersAdjust bed springs manually (if possible)
Deviation > 0.3 mmBed may be damaged or incorrectly mounted
Center higher than cornersThermal expansion — normal for warm beds
Historical comparison

Click Compare with previous to see if the mesh map has changed over time — useful for detecting that the plate is gradually warping.

Mesh history​

All mesh scans are saved with a timestamp:

  1. Click History in the bed mesh sidebar
  2. Select two scans to compare them (a difference map is shown)
  3. Delete old scans you no longer need

Export​

Export mesh data as:

  • PNG — image of heatmap (for documentation)
  • CSV — raw data with X, Y, and height deviation per point