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Photo Protocol
The Photo Protocol tells the operator exactly which images to capture during a CNC job. It covers machine setup, edge quality, cutter condition, hold-down, and the finished component so questions can be answered from the photos later. On busy South African workshop shifts, that record helps when a sheet, bit, or programme needs checking against what actually ran.
How Photo Protocol helps on the workshop floor
The Photo Protocol sets out what to photograph on a CNC job before anything gets missed. Include setups, defects, tooling wear, and finished work so the issue or result is easy to read from the images.
Begin with a wide shot of the full bed, then move closer to the material label, installed tool, and control screen. MDF, birch ply, aluminium, and acrylic each need different detail in the frame because dust, swarf, and melt marks read differently on camera. In Gauteng and coastal shops alike, good light and a clean lens matter more than taking twenty rushed pictures.
Capture the first setup before the spindle starts, then photograph the test piece before any stack of parts builds up. A quick note beside the job card should state the file name, tool number, and what the image is showing. When a cut goes off track or a finish comes out right, that small record gives the team something exact to compare.
Images to take at setup
The record for each job should include the sheet on the bed, vacuum or clamps in use, the fitted cutter, and the active programme name. Add close-ups of any defect, wear line, chip packing, or edge finish that needs attention.
Use the Photo Protocol alongside the job card and tooling list so each picture has context.
- Full-bed shot before cutting starts
- Close-up of first test piece
- Job reference visible in every set
Workshop conditions that change photos
Poor lighting near the router, reflective aluminium faces, and dust on dark melamine can hide the detail that matters. In some Gauteng workshops, fine dust settles fast enough that a lens needs wiping between shots. If a courier collection or handover is scheduled, photograph packed parts and labels before they leave the bench.
Coastal humidity can show up as staining on stored tooling and should be recorded if it affects the cut. Inland static and dust often cling to acrylic and composite sheets, so take one image before cleaning and one after. During load-shedding planning, it also helps to photograph the machine state before stopping a job mid-run.
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What each photo must show
Keep every image tied to a stage of the job such as setup, first cut, defect check, or completed batch. Make sure the frame shows enough surrounding detail to identify orientation, datum, and where the mark or fault sits on the part. Blurry close-ups with no wider reference do not help the next check.
Save the photos with the same naming style used for the programme and job paperwork. Add material type, thickness, tool number, and whether the image shows a pass, fault, or final finish. That makes it easier to trace a part later when production, purchasing, or inspection needs the record.