Guided Trimmers
Guided trimmers are flush-trim router bits fitted with bearings — designed to produce clean, consistent edges by following templates, jigs or workpiece surfaces. Perfect for laminate, MDF and joinery projects.
What Are Guided Trimmers Used For?
These cutters allow accurate trimming by using the bearing to follow an existing edge or form. Common in furniture making, kitchen fitting and panel fabrication:
- Flush Trimming – Match veneered panels or laminate to substrate edges.
- Template Work – Cut shapes using routing jigs for repeat parts or curves.
- Edge Clean-Up – Remove glue squeeze-out or refine the edge of rough cuts.
- Multi-Material Use – Works on MDF, ply, acrylics, laminates and softwood.
Used By:
- Cabinet fitters finishing carcass and panel trims
- Joiners cutting around templates or formwork
- Carpenters working on custom shelving and detailing
- DIYers installing worktops or built-ins
How to Choose the Right Guided Trimmer
Select your bit by shank size, bearing position and cutting depth:
1. Bearing Location
Top-bearing bits track beneath the surface (good for inverted templates). Bottom-bearing bits follow templates above the workpiece.
2. Cutter Length
Pick a bit with a cutting height that matches or exceeds your material thickness. Longer bits allow full-depth trims in one pass.
3. Cutter Material
Go for TCT-tipped cutters when trimming through abrasive boards like MDF or laminate. HSS bits suit softwood and plastics.
Guided Trimmer FAQs
What’s the difference between top and bottom bearing trim bits?
Top-bearing bits follow a guide underneath the material. Bottom-bearing bits follow templates placed on top. Choose based on your routing setup.
Can I use guided trimmers in a router table?
Yes — they’re perfect for router table setups. Use a fence or jig for added control when trimming small pieces or curves.
What’s the best speed for these bits?
Flush trimmers work well at 18,000–22,000 RPM. Keep speeds balanced and avoid forcing the pass to prevent burning.
Are guided trimmers suitable for laminated boards?
Yes — TCT versions glide cleanly through laminate without chipping. Always use sharp bits for best edge finish.
Do these bits need sharpening?
Eventually, yes. TCT bits can be resharpened professionally. If used heavily, many trades opt to replace them before dullness impacts finish quality.
