Check the rough assembly
Use the width, length, thickness, and weight of the second glue-up—not only the finished board. Confirm that the assembly can be supported, clamped, moved, and processed by the planned equipment.
Define removal allowance
Record rough thickness and finished thickness separately. The difference must cover flattening of both faces and later surface preparation. Excess allowance adds material and work; insufficient allowance can make the finished specification impossible.
Plan from manufacturer guidance
The safe and appropriate method depends on the specific machine, cutter, workholding, board geometry, and operator experience. Follow the equipment manufacturer's instructions and have the process reviewed by an experienced maker. This article does not prescribe a machining method.
- Support and workholding for the full assembly.
- Dust extraction and workspace clearance.
- Maximum dimensions and weight.
- Method for checking flatness and parallel faces.
- Allowance remaining for grooves and profiles.
Do not improvise after glue-up. If the planned machine cannot accept the rough assembly, change the board design or approve a suitable alternative process first.
Approve a fallback route
Identify who will perform the operation, with which equipment, and what dimensional result is expected. If the fallback changes achievable thickness, cost, or schedule, reflect that in the project before material is cut.