Gideon Odendaal · CNC First Kits Lead
Friday bit audits
Five-minute close rituals to catch dull bits before they stall your next job.
Why Friday Bit Audits Matter on SA Floors
In every vinyl, laser or CNC bay from Germiston to Menlyn, a dull bit left unchecked on Friday can cost a team their Saturday job. Tool wear creeps in quicker than you think, especially when you've run aluminium stock through a CNC all week or dialled in short laser jobs for mall signage. Add in Highveld dust or a bit of coastal air, and edge life drops faster than suppliers usually warn.
The South African floor doesn't get a break from power cuts, either. Stop-start cutting eats into your bits’ lifespan. And with local shipping taking days, a dead bit Saturday morning means lost trade until the next delivery. A Friday audit won't take longer than five minutes, but it can save your whole team a lot of stress.
Set Up: The Quick Audit Routine
Start at the end of the shift, before the benches are cleared and radios switched off. Every operator lays out their bits, blades or tips. Run a thumb along the edge, feeling for burrs that slow down acrylic or MDF jobs.
If you're working in a place like Sunnyrock or a coastal trade park, check for rust or pitting as well. The air inside Cresta mall units is dry, but at Boardwalk you'll see more surface corrosion, especially on DTF heads and exposed metal bits.
What to Record and Why
Audit sheets should be simple: date, operator name, bench or station, bit type, and a short comment on condition, sharp, chipped, blunt, or rusty. Stick to your actual kits, not a generic template. Over time, these quick notes build a picture. Which station chews through v-grooves fastest? Are your Friday bits from the main CNC bay lasting more than three weeks, or are they replaced every second Friday in winter?
Photos help, but a quick sketch or tick box is fine for most shop teams. The key is consistency. If you miss a Friday, it’s easy to lose track and find you’re using blunt bits on a Monday rush job.
Worked Example: Germiston Vinyl Bench
Take a small signage shop in Germiston, finishing mall panels on a Friday. Operator Thabo finishes a run using a 6 mm carbide upcut bit. He lays out the bit next to the audit sheet, runs a thumb over the edge, spots a small chip. He marks it as ‘chipped, replace next week’ and adds his initials. Next week, the buyer sees the note, pulls a new bit from their ByThis starter kit, and the job keeps moving without delay.
This bit earned about 28 hours over three weeks, mostly 6 mm ACM panels from the Cresta contract. Audit sheets for the last month show winter reduces bit life by about one job compared to summer, probably due to dust and drier air.
Tell us about your bench
Share the bench you run and the week you are packing for. Sunnyrock replies with a considered shortlist, not a megacatalogue.