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Kreg MortiseMate Loose Tenon Jig turns traditional mortise and loose tenon joinery into a drill-driven process, so woodworkers can cut hidden joints without routing. The tool uses a precise mechanism to guide the drill, which matters when repeatable, accurate joints are needed across a project. The MortiseMate creates loose tenon joints with the ease of using a drill, so installers can bring mortise-and-tenon strength to jobs even when a router setup is not practical. By relying on this jig instead of complex router jigs, woodworkers can keep setups simple while still achieving mortise geometry suited for loose tenons. The jig is built as a dedicated solution for loose tenon joints, so every feature serves to position, support, and guide the drilling action directly at the mortise location in typical woodworking tasks.
The MortiseMate uses an auto-indexing step-down mechanism that advances the cutter 1/16 inch with each pass, so installers can build depth in controlled increments while keeping the drill stable. This mechanism lets the operator focus on steady drilling while the jig handles depth changes, which is useful when repeating the same joint across cabinet parts, rails, or stiles. Because mortises are created with a drill instead of a router, users can keep their process centered on one power tool, streamlining workflow around marking, clamping, and drilling. The jig is part of the Kreg Tools class, so it aligns with woodworking joinery tasks where guided drilling and accurate mortise locations are critical to final fit.
The Kreg MortiseMate Loose Tenon Jig is used in woodworking where loose tenon joints provide strong hidden connections between parts. The jig supports creating mortises in pieces that benefit from concealed joinery, such as face frames, cabinet components, or furniture parts that rely on separate tenons. By combining a guided drill path with the auto-indexing step-down mechanism, the MortiseMate helps produce mortises that line up cleanly between mating workpieces, so assembled parts seat tightly along the joint line. The integrated mini work surface gives the operator a dedicated area for clamping stock with trigger-style clamps, which stabilizes the workpiece directly at the drilling zone during mortise creation. This local support around the bit helps maintain alignment of the mortise relative to the board edge or face.
The MortiseMate uses micro adjustment screws to tune mortise width, so users can dial in a fit that suits their loose tenon stock, whether they want a tighter or slightly looser side clearance. These fine adjustments are typically found on higher-end tools, and here they let the operator move in small increments instead of resetting the entire jig position. In practice, that means a shop can standardize on certain tenon dimensions and use the screws to match the mortise, reducing test cuts once the setting is established. The auto-indexing step-down mechanism then manages vertical progression in 1/16 inch increments, which keeps each pass consistent across multiple joints. Together, the micro adjustment screws and step-down indexing support repeatable mortise geometry from part to part, helping reduce rework when building projects that require many identical joints.
The Kreg MortiseMate Loose Tenon Jig creates loose tenon joints using a drill, so wood parts can be joined with separate tenons hidden inside matching mortises.
The MortiseMate auto-indexing step-down mechanism lowers the cutter by 1/16 inch with each pass, so mortise depth builds in even steps without manual depth resets.
The MortiseMate is designed to create mortises with just a drill, so routing operations are not required for its normal joinery workflow.
The MortiseMate micro adjustment screws change mortise width, allowing tight or slightly loose fits so the mortise can match the chosen loose tenon stock.
The integrated mini work surface provides a flat area for clamping with trigger-style clamps, which stabilizes the workpiece right where the mortise is drilled.
The Kreg MortiseMate Loose Tenon Jig is designed for woodworkers who want professional hidden joints using a drill-driven process instead of router-based systems.
The Kreg MortiseMate Loose Tenon Jig, model KLTJ100, gives woodworkers a way to cut mortises for loose tenons using a drill, an auto-indexing step-down mechanism, and micro adjustment screws. This setup supports accurate hidden joints without complex router assemblies. The integrated mini work surface adds a stable clamping area, which helps keep parts steady during drilling. For shops and installers who want consistent, professional mortise-and-tenon style joints in standard woodworking tasks, this dedicated jig provides a focused solution built around drill operation and precise joint geometry.
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