Guided Pierce & Trim Cutters
Guided pierce trim cutters combine flush-trim control with bottom-cutting tips — letting you plunge directly into material and trim to templates or edges with clean, accurate finishes.
What Are Pierce Trim Router Bits?
These bits feature a cutting edge that extends across the tip, allowing plunge entry before trimming with a guide bearing — perfect for cut-outs or inlay routing:
- Plunge Entry – Cut directly into boards without pre-drilling entry points.
- Flush Trimming – Follow patterns, jigs or panel edges with an upper or lower bearing.
- Edge Clean-up – Tidy up laminate, veneer, or routed shapes post-install.
- Routing Openings – Ideal for sockets, grills or sink cut-outs in kitchen fit-outs or panel installs.
Perfect For:
- Kitchen and worktop installers trimming openings
- Joiners templating shelf slots or duct cut-outs
- Signmakers and panel builders using guided stencils
- DIYers cutting flush patches or shaped apertures
What to Look for in a Pierce Trim Cutter
Focus on tip sharpness, plunge clearance and bearing alignment for best results:
1. Tip Design
Look for full-bottom carbide tips for safe, effective piercing without tearing fibres.
2. Bearing Placement
Choose top or bottom-bearing bits depending on whether you’re using a template above or beneath the cut.
3. Shank Size
Match to your router — most are ¼” or ½” depending on tool size and cut length.
Pierce Trim Router Bit FAQs
What makes a pierce trim cutter different?
It includes a cutting edge on the tip, allowing plunge entry into material — unlike regular trim bits which only cut along the sides.
Can I plunge directly into MDF or ply?
Yes — just go slow and steady. TCT tips help reduce burning and edge tear-out when plunging through tough or coated materials.
Are guided bits safer to use?
Yes — bearings help control movement and stop the cutter digging into edges, especially when flush-routing to a template or edge band.
What speed should I run them at?
Most plunge trimmers perform best around 18,000–22,000 RPM. Always refer to the manufacturer’s spec and router limit.
Can I sharpen the plunge tip?
It’s possible, but only by a tool specialist. For DIY or trade use, replacement is typically more cost-effective long-term.
