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V-Groove ACM Folding

V-grooving turns a flat ACM panel into a folded three-dimensional shape — sign cans, fascias, returns, architectural reveals. This is the cleanest finished-edge fold method in the trade.

What this is

V-groove folding is the technique that makes most modern Australian signage three-dimensional. Take a flat ACM panel; route a precise V-shaped channel along the back at each fold line; flip the panel over and the front skin stays continuous while the panel folds along the groove to give a clean finished edge. No mitre, no weld, no exposed plastic core. The painted front face wraps the corner unbroken.

This is the foundation of folded sign cans — the rectangular illuminated box you see on every shopfront and fascia in the country. It's also how shop-fitters make fascia trim, way-finding panel returns, architectural reveals around windows and entrances, and the wrap-around faces of bespoke signage. Get the groove right and the fold sits true with a perfect 90° (or whatever angle the job needs); get it wrong and the front skin tears or the corner gaps.

We run a range of V-bit tooling categories — 90°, 108° and 135° are standard configurations. The angle chosen depends on the fold geometry the job needs and the panel thickness. Tighter angles give a sharper external corner; wider angles give shallower folds for tapered shapes and oblique returns. Confirm the target fold geometry on your enquiry and we'll match the bit to the job.

This is a trade-focused capability. Sign shops, shop-fitters and architectural fabricators are the main customers. Send the unfolded panel as a DXF with fold lines marked on a separate layer (label them FOLD-90, FOLD-108, FOLD-135 as appropriate) and we'll route the grooves, cut the perimeter, and deliver flat-pack ready for you to fold and bond on site.

When to use

  • Folded sign cans — shopfront illuminated boxes and fascia signs
  • Architectural fascia trim, panel returns, window reveals
  • Way-finding signage with three-dimensional returns
  • Bespoke signage with wrap-around painted faces
  • Flat-pack three-dimensional ACM panels for site assembly

When not to use

  • Single-skin aluminium — that folds with a press brake, different process
  • Polycarbonate or acrylic — they don't V-groove fold; use mechanical assembly instead
  • ACM grades with brittle paint finishes that crack at the fold (test first)
  • Very tight radii that the V-bit profile can't accommodate cleanly
Provisional · Confirmed on quoteV-Groove ACM Folding
Material
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Thickness range
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Process
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Tolerance
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Edge finish
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Typical lead time
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Exact values confirmed when we quote your job.

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FAQ

What V-bit angle should I specify?
Depends on the fold geometry. For a square 90° external corner, a 90° bit gives the sharpest fold. For shallower returns (oblique reveals, tapered shapes), 108° or 135° gives a cleaner wrap. If you're not sure, send the part geometry and we'll match the bit.
Do I assemble the folded piece, or do you?
Either. Most trade customers prefer flat-pack — they fold and bond on site with structural double-sided tape or adhesive. We can also fold, bond and deliver assembled if the part fits a vehicle and the assembly tolerances allow.
Will the painted face survive the fold?
On reputable ACM grades — yes, that's exactly what they're designed for. The painted skin is engineered to wrap a V-folded corner without cracking. Cheap or weathered ACM may flake at the fold; if in doubt, supply a test piece first and we'll trial it.
What file types can I send?
DXF is the cleanest — that's a single-line vector format the cutter reads directly. AI, SVG, PDF, EPS and DWG all work too. If you've only got a JPG or a sketch on paper, send it anyway and we'll tidy it for you (small file-prep charge applies).
How should I prepare a DXF?
Outlines only, no fills. One closed path per cut. Different operations (cut, engrave, drill) on different layers so we know what gets which tool. Convert text to outlines before exporting so we don't have to chase the same font. If anything's ambiguous, write it in the file name or add a note in the quote request.
How quick is a quote?
Most quote requests come back within 1 business day, Mon-Fri. Simple trade jobs are usually faster during business hours. Complex jobs, supplied-material jobs or anything unusual may take longer — we'll tell you up front if so.

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Quote back, usually within 1 business day. No card needed.

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