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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​

:::warning 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

:::tip 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