Step 03.7 — Check the plate for flatness before the magnet goes on¶
Step 7 of 20 with a helper · Chapter 03 — Build plate
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Gather for this segment — steps 03.7–03.10 (~30 min)
Build Plate box (carton 2)
- Magnetic Pad 2.4-350 ×1
Tools and consumables
- steel rule or straightedge
- IPA
- lint-free cloth
- nitrile gloves
- masking tape
- plastic squeegee or card
- knife or scissors for the liner
- sharp craft knife
- 2.5 mm hex key
Set out for later steps
- build plate
- M3×20 SHCS ×1, fit test
Already on the bench
- the applied magnetic pad
Parts:
- build plate · set out now, fitted later
- steel rule or straightedge · tool
Do: Stand the straightedge on edge on the ground face and sight against a light: one diagonal and one centreline, two minutes. Do it now; once the magnet is on you cannot inspect this surface again.
Check
No daylight under the straightedge. Flatness tolerance is not specified; raise it in #ldo_motors only if a sheet of paper slides under.
Helper Holds a torch behind the straightedge and says if any light shows under it.
What you're looking at
The bare ground face and a straightedge. This is the last moment the aluminium is visible. Once the magnet is on, a dish or crown can only be inferred from a bed mesh, and neither mesh nor quad gantry level corrects it.
Tip
a cast, Blanchard-ground 5083 plate is deliberately thick and stress-relieved; a visible dish here does not get corrected by mesh or QGL later. src
Source: Voron manual p.53 · LDO 350 Rev D BOM