Tool guide
Router Bits and Edge Profiles: A Visual Guide
Learn what common router bits do, from roundovers to dadoes and rabbets, with charts on cut depth and use so you shape edges and joints with confidence.
Research Lens
How can a personal builder use CutList to finish router bits and edge profiles: a visual guide with fewer mistakes?
The hobby workflow is strongest when the app is used as a planning checkpoint: define the project, enter accurate stock and parts, generate a visual layout, then use cost, waste, grain, kerf, PDF export, project history, and offline access to control the real cutting session.
Decision Metrics
Visual model
One tool, edges and joints
Profile bits shape edges; straight and bearing bits cut joinery. Depth control keeps cuts clean.
The Router Shapes Edges And Cuts Joints
A router is one of the most versatile shop tools, shaping decorative edges, cutting joinery like dadoes and rabbets, and trimming edge banding flush. The bit decides what it does. Understanding the common bits, what profile or cut each makes, and how deep to run them lets you both finish edges and cut accurate joints with one tool.
Edge Profile Bits
Profile bits shape the edge of a board for looks and feel. A roundover softens a sharp corner, a chamfer cuts an angled bevel, and an ogee or cove adds a decorative curve. These improve both appearance and safety by removing sharp edges. On plywood, a light roundover or chamfer also reduces edge splintering on handled parts.
Joinery Bits
Straight and spiral bits cut grooves, dadoes, and rabbets for joinery. A straight bit in a dado cut captures a shelf; a rabbeting bit steps an edge for a back panel. Flush-trim bits ride a bearing to trim edge banding or template-shape parts. These joinery cuts are where the router moves from decoration to structure, and depth control matters.
Depth And Multiple Passes
Routing too deep in one pass strains the bit, burns the wood, and is unsafe. Deep profiles and joinery cuts should be reached in multiple shallow passes, raising the bit a little each time. Planning the final depth and the number of passes keeps cuts clean and the bit cool, especially in hard material or with large profile bits.
Plan Profiles And Joinery Into The Build
Decide which edges get a profile and which joints the router will cut before you finalize the cut list, because a captured dado or a rabbet changes part sizes. Use the cut list calculator to account for joinery allowances, and run profiles on test offcuts first to confirm the depth and look before committing to finished parts.
Data charts
Compare
Common router bits
| Bit | Makes | Use | Note |
|---|---|---|---|
| Roundover | Soft rounded edge | Comfort, safety | Reduces splintering |
| Chamfer | Angled bevel | Decorative edge | Clean modern look |
| Straight | Grooves, dadoes | Joinery | Multiple passes deep |
| Flush-trim | Trimmed edge | Edge banding, templates | Bearing-guided |
Field Checklist
- Use profile bits to shape and soften edges.
- Use straight and bearing bits for joinery.
- Reach deep cuts in multiple shallow passes.
- Add router joinery allowances to part sizes.
- Test profiles on offcuts first.
FAQ
Common questions
What does a router do?
It shapes decorative edges, cuts joinery like dadoes and rabbets, and trims edge banding flush.
What is a roundover bit for?
It softens a sharp edge for comfort and safety, and reduces splintering on plywood edges.
How deep can I rout in one pass?
Keep passes shallow; reach deep profiles and joints in several passes, raising the bit each time.
Do router joints change my cut list?
Yes. Captured dadoes and rabbets change part sizes, so add the allowance before cutting.
Sources