The Kreg Tool KLTJC-M10 MortiseMate 10mm Mortising Cutter is a carbide-tipped mortising cutter made for loose tenon joinery. This is a mortising cutter designed for cutting precise 10 mm mortises for loose tenon joints. Model Number KLTJC-M10. It is built for woodworkers, cabinet installers, furniture builders, and serious DIY users who want clean, repeatable mortises without stepping up to a larger dedicated mortising machine.

What matters here is fit and repeatability. This cutter creates mortises sized for Kreg 10 mm tenons, so you are not guessing at width or trying to tune a setup around a close-enough bit. If you are building frames, casework, tables, or edge-to-edge glue-ups with the Kreg MortiseMate system, having the right cutter size saves time and helps keep your joints consistent across a whole project.

The cutting end is carbide tipped, which gives you longer life than a basic steel cutter and better resistance to wear as you work through hardwoods and sheet goods. Kreg rates it to withstand over 5,000 joints, depending on material. In plain terms, that means this is not a throwaway accessory. It is meant to stay accurate through a lot of real shop work before you are looking for a replacement.

Spiral flutes are another big part of why this cutter matters. On a mortising job, a rough cut means more cleanup and a less predictable glue surface. The spiral flute design helps produce a cleaner, more controlled cut so the finished mortise is ready to accept the tenon with less extra work. That is especially useful when you are batching matching parts and every mortise needs to line up the same way.

Kreg also added laser-etched markings for quick mortise depth adjustment, and the included stainless steel stop collar helps you lock that setting in. That sounds like a small detail until you are running repeated joints. Being able to set depth quickly and return to the same depth with confidence is what keeps face frames, rails, stiles, and panel parts moving without constant checking.

This cutter is designed to work with any drill, but there is an important limit: it is only for use with the Kreg MortiseMate Loose Tenon Jig. That is the system relationship that matters most with this product. If you already own the MortiseMate jig and you need the 10 mm size, this is the correct cutter for that setup. If you do not own the jig, this cutter is not a standalone joinery solution.

Who should buy it? Anyone already committed to the Kreg MortiseMate platform and building projects where strong, accurate loose tenon joinery makes more sense than pocket holes or dowels. It is a smart buy for cabinet work, furniture joinery, and general woodworking where clean mortises, reliable depth control, and long cutter life matter more than improvising with a generic bit.

Kreg Tool KLTJC-M10 MortiseMate 10mm Mortising Cutter Gets Straight to the Point

If you already run the MortiseMate system, this is the right cutter for clean 10 mm joinery without messing around.

• Who it's for: Woodworkers and cabinet builders using the Kreg MortiseMate Loose Tenon Jig for repeatable loose tenon joints.
• Why it stands out: Carbide tips, spiral flutes, and simple depth setting give you the stuff that actually matters: clean mortises, good fit, and repeatability.
• Worth knowing: This is not a general-purpose mortising bit. It is purpose-built for the MortiseMate jig and sized specifically for 10 mm tenons.

• What jig does this cutter work with? It is only for use with the Kreg MortiseMate Loose Tenon Jig.
• What size tenons is it made for? It creates mortises sized for Kreg 10 mm tenons.
• Can it be used with a regular drill? Yes. Kreg states that it works with any drill when used in the MortiseMate setup.
• What helps control mortise depth? The cutter has laser-etched markings and includes a stainless steel stop collar for precise depth setting.