Biscuit Joiner
A slot cutter for oval compressed biscuits.
A biscuit joiner cuts matching crescent slots in mating parts. Biscuits help align panels, frames, and case parts but are not the strongest choice for every structural joint.
Power tools and machinery
Joinery
Joinery tools cut, guide, reinforce, and register wood joints so parts assemble accurately and stay aligned.
What to Know About Joinery
Power and jig-based joinery tools include biscuit joiners, loose-tenon joiners, doweling jigs, pocket-hole systems, mortising machines, router jigs, and spline setups. Each supports a different joint structure and workflow.
Working principle
A joinery tool removes a pocket, groove, hole, or slot at a controlled location. The mating part, fastener, tenon, dowel, biscuit, or spline then aligns and strengthens the assembly.
Major Types
Choose by the joint's purpose: alignment, strength, speed, hidden fastening, repeatability, or traditional appearance.
Loose-Tenon Joiner
A machine or jig for mortises and floating tenons.
A loose-tenon system cuts matching mortises and uses a separate tenon. It can be fast, strong, and repeatable for tables, chairs, frames, and cabinets.
Doweling Jig
A drill guide for aligned dowel joints.
A doweling jig positions drill bits so mating dowel holes line up. It is affordable and effective for cabinets, frames, and edge alignment when layout is careful.
Pocket-Hole Jig
An angled drilling guide for pocket screws.
A pocket-hole jig drills a stepped angled hole for screws. It is fast for cabinets, face frames, shop fixtures, and hidden fastening where the look is acceptable.
Mortising Machine
A machine for square mortises.
A hollow-chisel mortiser cuts rectangular mortises with a drill bit inside a square chisel. It speeds traditional mortise-and-tenon work.
Router Joinery Jig
A template or guide system for routed joints.
Router jigs can cut dovetails, box joints, mortises, dados, and shelf pin holes. They trade setup time for repeatable results.
Spline Jig
A jig for reinforcing miters or edge joints.
A spline jig guides a saw or router to cut a slot across a joint. A spline adds alignment and glue surface, especially in miters.
Common Woodworking Uses
- Cabinet and face-frame assembly.
- Table, chair, and frame joinery.
- Panel alignment and edge joining support.
- Fast hidden fastening for shop and utility projects.
- Repeatable dovetails, box joints, dados, and mortises.
Choosing Joinery
- Use loose tenons or traditional mortises where strength and alignment matter.
- Use pocket holes where speed and hidden fasteners fit the design.
- Use biscuits mainly for alignment and light reinforcement.
- Choose jigs that match the scale and repeat count of your projects.
Setup
- Mark reference faces and keep them against the fence or jig.
- Test the joint in scrap before cutting final parts.
- Control depth stops and fence height carefully.
- Keep chips cleared from mortises, slots, and drill guides.
Accessories and Consumables
- Clamps
- Reference stops
- Router bits
- Drill bits
- Tenon stock
- Biscuits
- Dowels
- Pocket screws
- Loose tenons
- Spline stock
Maintenance
- Clean cutters and drill guides.
- Replace dull bits and blades.
- Check jig fences and stops for square.
- Keep screws, bushings, and guide rods tight.
Safety
- Clamp work before routing or drilling joinery.
- Keep hands away from hidden cutters inside jigs.
- Do not defeat guards on biscuit joiners or mortisers.
- Use dust collection because joinery pockets pack chips quickly.
Companies & Brands
Companies are grouped by the products they currently make for this type of woodworking.
Joiner / Mortiser Manufacturers
CastlePocket cutters and joinery machines.FestoolDomino loose-tenon joiners and joining systems.Grizzly IndustrialMortising machines and joinery machinery.JET ToolsMortisers and joinery machines.LamelloBiscuit joiners, Zeta P2, and joining systems.MafellDuoDowel and mortising/joinery systems.PowermaticMortisers and joinery machinery.
Joinery Jig & Template-System Makers
Bosch ToolsRouters, router tables, and joinery-compatible accessories.JessEmAccessory / systemDowelling jigs and joinery systems.Kreg ToolPocket-hole jigs and loose-tenon joinery tools.LeighDovetail, box-joint, and mortise-and-tenon jigs.WoodpeckersAccessory / systemLoose-tenon, box-joint, and precision joinery tools.