Router Cutting Tips for ACM: Choosing the Right Compression Bit
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Mastering ACM Panel Cutting with the Right Tools
Clean, professional ACM cuts require the right router bit and technique. Atlas Tools compression bits are engineered for real-world signmaking and fabrication.
Understanding ACM cutting challenges
Risk of delamination at cut edges
Burrs on top and bottom aluminium skins
Chip evacuation issues in tight geometry
Surface finish problems on pre-finished panels
ULTRACLEAN Compression Bit — Cleanest Cut Path
Ideal for standard ACM cutting where maximum edge quality is required.
Key features
Single flute design · DLC coating · Burr-free top & bottom edges · 3.175mm diameter
Single flute design · DLC coating · Burr-free top & bottom edges · 3.175mm diameter
Best applications
Long straight cuts · Large panel trimming · Factory-finished ACM
Long straight cuts · Large panel trimming · Factory-finished ACM
Recommended settings
RPM: 18,000–24,000 · Feed: 5–7 m/min · Full depth single pass
RPM: 18,000–24,000 · Feed: 5–7 m/min · Full depth single pass
ULTRAPACK Compression Bit — Small Shapes & Vinyl
Designed for tight geometry, nested parts, and pre-laid vinyl.
Key features
Optimised flute geometry · DLC anti-stick coating · Vinyl-safe compression edges
Optimised flute geometry · DLC anti-stick coating · Vinyl-safe compression edges
Best applications
Tight radii · Small lettering · Vinyl-wrapped ACM · Closely nested parts
Tight radii · Small lettering · Vinyl-wrapped ACM · Closely nested parts
Recommended settings
RPM: 18,000–22,000 · Feed: 5–7 m/min · Consider climb cutting
RPM: 18,000–22,000 · Feed: 5–7 m/min · Consider climb cutting
Pro tips for ACM routing success
Secure panels firmly using vacuum hold-down or edge clamps
Balance feeds & speeds to avoid heat and chatter
Keep tools sharp — dull bits cause delamination
Use proper dust extraction for aluminium chips
Always test on scrap before production cuts
Choosing ULTRACLEAN vs ULTRAPACK
Choose ULTRACLEAN
Straight cuts · Maximum edge quality · Standard ACM
Straight cuts · Maximum edge quality · Standard ACM
Choose ULTRAPACK
Tight radii · Vinyl panels · Nested parts · Chip packing risk
Tight radii · Vinyl panels · Nested parts · Chip packing risk
Get professional results every time
Both ULTRACLEAN and ULTRAPACK bits feature premium construction, precision grinding, and advanced DLC coatings. Having both on hand ensures you’re ready for any ACM cutting challenge.