ICT -- research, capture, store, resize
ICT speeds up the early graphics stages. A designer can research shapes, images and fonts, capture an image with a scanner or digital camera, store it as a reusable file, and resize and recolour it fast. Examiners reward the precision point: a vector graphic (and most fonts) is lines and curves, so it scales cleanly; a bitmap photo is a fixed grid of pixels, so enlarging it looks blocky. Use vector for logos that must resize.
CAD designs it, CAM makes it
CAD (computer-aided design) draws it on screen; CAM (computer-aided manufacture) controls the machine that makes it, and one file drives both. Describe the FULL chain: design and format the artwork, save/export it, transfer it to the CAM output device, set the parameters (material, pressure, speed) and run it. Output devices: printer, plotter, vinyl cutter, laser cutter, 3D printer, CNC router. Stopping at "type the letters" loses the marks.
Quantity vs prototype -- die cut or hand
How a product is made depends on how many are needed. For quantity, nets are die cut: a forme of cutting knives and creasing rules cuts and creases every net in one press -- fast and identical. Clear packaging is thermoformed -- vacuum forming drapes a heated sheet over a mould (open blisters, trays); blow moulding inflates molten plastic inside a mould (bottles). A prototype is made by hand: craft knife, cutting mat, steel rule. Match to the quantity.
Drawn from real examiner reports.
Laser cutter for quantity nets
Asked for the process that cuts nets in quantity, the common wrong answer is "laser cutter". A laser cuts one piece at a time, is slow, and does not crease -- so it suits one-offs. The quantity process is die cutting: a forme of cutting knives and creasing rules stamps the net and its folds in one press, cheaply per unit. Read: one-off or quantity?
Flagged s23 P51 Q B5b(ii); s23 P52 Q A2 (quantity net cutting = die cutting, not laser).
CAD/CAM described as just typing
A headline weakness across all three Graphics variants. Asked how a graphic is made by CAD/CAM, candidates say "you design it on the computer" but cannot give the stages that follow, where most marks sit: save/export the file, transfer it to the CAM machine, set the parameters and run it. Naming the software but not these stages caps the answer.
Flagged w23 P51/P52 Q B4c; s23 P53 Q B4b(i) (only the design step described).
Vacuum-form mould release features
Asked what lets a vacuum-formed part release from its mould, candidates wrongly give "drill vent holes" or "a soft mould" -- neither helps. The features that let it lift off cleanly are a draft angle (sides taper narrower towards the top), rounded corners (sharp corners trap and tear the plastic) and a release agent -- learn these three.
Flagged w23 P53 Q B5d(ii) (release = draft angle, rounded corners, release agent).
"Without CAD/CAM" but still CAM
Some questions bar CAD/CAM ("other than by CAD/CAM"). Answers that still use vinyl stickers or laser cutting then score nothing, because both are CAM. The expected hand methods are stencils, markers/pens and spray paint to apply lettering or graphics by hand. Read the restriction in the question and give a genuinely non-CAM method.
Flagged s23 P52 Q B5 (vinyl/laser barred; expected stencils, markers, spray paint).
Vinyl process left half-described
Producing self-adhesive vinyl does not end at cutting. After the cutter cuts the design you must weed (remove the waste vinyl around the letters), apply transfer tape over the design, position it on the surface, then peel the tape away leaving the vinyl stuck down. Candidates describe the cut but omit weeding and the transfer-tape steps, losing those marks.
Flagged s23 P53 Q B5; w23 P51/P52 Q B4c (vinyl process described incompletely).
Capture device vs output device
Asked how an image is captured into the computer, candidates often name an output device -- a printer or plotter. Those send a graphic out; they do not bring an image in. The input/capture devices are a scanner (for flat artwork and photos) and a digital camera (for objects and scenes). Keep input (capture) and output (make) devices separate.
A bitmap photo blurs when enlarged
A testable error: assuming any image "on the computer" enlarges and stays sharp. It depends on the type. A vector graphic (lines and curves) and most fonts redraw cleanly at any size. A bitmap photo is a fixed grid of pixels; enlarging it makes each pixel bigger, so edges go blocky and detail is lost. Use vector for logos; keep photos at captured size.
Vacuum forming vs blow moulding
A common mix-up. Vacuum forming softens a plastic sheet and pulls it down onto a mould by removing the air, giving an open, single-surface shape (a blister or tray). Blow moulding inflates molten plastic inside a hollow mould to make a hollow, closed item (a bottle). Open shape over a mould = vacuum forming; hollow item blown inside = blow moulding.
Name the specific device, not "a machine"
Vague answers score nothing -- name the specific device or process: "a vinyl cutter for the self-adhesive lettering", "a 3D printer for the prototype", "die cutting for quantity cartons", not "a machine" or "a CAM tool". The mark is tied to the exact device that suits the job.
Match the process to the quantity
Match the process to how many and to the material: hand tools or a laser for a one-off; die cutting for quantity nets; vacuum forming for an open blister; blow moulding for a hollow bottle. A process right for a one-off is often wrong for a production run.
Give the whole CAD/CAM chain
For any CAD/CAM answer give the whole chain -- design and format, save, transfer, set parameters, run, then weed and apply for vinyl -- because the marks spread across the stages. Read for any restriction ("in quantity", "without CAD/CAM") and stay within it.
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