Ms Puleng Ngqula · Care and Calibration
Square edges before the client
Two-minute square ritual for short-run print.
Why square edges matter in print shops
Short-run print shops from Cresta to the Tyger Valley know clients notice the difference between a tight stack and a wonky one. Out-of-square edges can be the first thing a customer spots, whether it's a stack of business cards or a run cut for mall tenant packs. In South Africa, where every rand spent on substrate and time counts, a two-minute squaring step adds value clients remember. It’s not just about presentation - off-square jobs can jam finishing gear like guillotines and creasers, especially if you’re running short cuts on coated stock.
What throws squareness off on SA floors
Local conditions do a lot to push jobs out of square. Highveld dry spells around Germiston boost static and curl, while coastal humidity at Ballito or Boardwalk softens paper and exaggerates shear creep on blade machines. Most FET programme benches see at least one old trimmer with a flexing side guide. Power-cut stutters can also stall the feed just enough to step the stack. Don’t blame your team straight away, the floor, humidity, even a tiny dogleg in the bench can be a culprit.
How to square: two-minute on-bench method
1. Knock your cut stack sharply against the longest, flattest edge of your trimmer or guillotine table. In the Germiston yard, that’s usually the aluminium side rail.
2. Rotate and repeat for the adjacent edge. For vinyl or coated stock, use a clean lint-free cloth under your stack to slide easily.
3. Clamp with your hand or a weighted block. Use a 30 cm steel machinist’s square to check the alignment against the table, not just eyeball.
4. For out-of-square stacks, tap corners lightly till flush, then hold firm and slice off 1-2 mm as needed on the guillotine.
5. Record the adjustment in your daily log: print date, material batch, and how much was trimmed (2 mm, 3 mm, etc). Noting it helps spot patterns across rain or power-cut cycles.
What to record for QC and repeat work
Quality checks start with noting edge waste and which bench was used. For repeat orders (common with educational packs or mall tenant sets), write up:
- Print date and time
- Stack material and thickness
- Which trimmer or guillotine was used
- How much edge was squared off
- Notes on weather or cut issues (e.g. "curl from coastal damp; trimmed 3 mm")
Short example: Menlyn tenant starter cards
Menlyn shopfitters needed 50 packs of tenant cards on coated board, guillotined to 210 mm x 74 mm. The job ran over two mornings during a power-cut window. After first trimming, 7 stacks were off by upto 2 mm at the short edge. Knocked square and trimmed again, recorded batch as "Friday a.m., guillotine 2, 2 mm squared, static from dry air." Next week’s repeat ran square first shot after covering the stack and adding a weighted press overnight.
Clean edges mean smoother handover at the tenant’s kiosk, and fewer returns for the trade counter to fix later.
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