Key Features
8 mm Mortising Cutter Built for cutting 8 mm mortises for loose tenon joinery. If you are working in the Kreg MortiseMate system, this is the cutter size that matches that joint layout. Carbide-Tipped Edge The carbide tip is there for one reason: cleaner, more finished mortises. That matters when you want joints that fit right without extra cleanup. Stop Collar Control The included stop collar helps set repeatable mortise depth. On loose tenon work, that saves time and helps keep both sides of the joint consistent.
Overview
The Kreg Tool KLTJC-M08 mortising cutter is an 8 mm joinery cutter made for the Kreg MortiseMate loose tenon system. This is a mortising cutter designed for cutting precise mortises for loose tenon joinery. Model Number: KLTJC-M08. If you are setting up for cabinet parts, face frames, rails and stiles, or other alignment-critical woodworking joints, this is the cutter that handles the 8 mm mortise size shown on the tool itself.
What matters here is not just the size, but the system fit. The product images clearly show that this cutter is exclusively for use with the Kreg MortiseMate Loose Tenon Jig and loose tenons. That makes it a purpose-built accessory, not a general-use router bit you would buy for random setup work. If you already own the MortiseMate jig, this cutter gives you a dedicated 8 mm option for matching mortises to the corresponding loose tenon stock.
The cutting end is carbide-tipped, and that matters on real wood, not just on a spec sheet. A carbide-tipped mortising cutter holds up better and leaves a cleaner wall and bottom in the mortise than a softer edge would. The practical benefit is cleaner joinery and less fuss when you are test-fitting tenons or gluing up assemblies where slop and tear-out can throw off the whole job.
The included stop collar is another detail that earns its keep. Mortise depth has to be controlled if you want repeatable joinery across multiple parts. The stop collar shown in the images helps you set that depth consistently, which is a big deal when you are cutting matching mortises in rails, stiles, panels, or table parts and do not want to keep measuring and second-guessing every setup.
From a shop-use standpoint, this is the kind of accessory that makes sense for woodworkers who want a more controlled loose tenon workflow without stepping into a much larger machine setup. It is straightforward: chuck it in a drill as shown, set the collar, use it with the MortiseMate jig, and cut clean mortises that line up with the loose tenons made for the system.
This Kreg Tool KLTJC-M08 mortising cutter is best for woodworkers, cabinet builders, furniture makers, and serious DIY users who already have the Kreg MortiseMate platform or are building around it. If you need an all-purpose cutter for unrelated tools, this is not that. If you need an 8 mm cutter specifically for MortiseMate loose tenon joinery, it is the right piece for the job.
Built for the MortiseMate System
This accessory is made to work inside the Kreg MortiseMate workflow, which is the whole point. You are not guessing at fit or adapting a random cutter to the jig.
- Exclusively shown for use with the Kreg MortiseMate Loose Tenon Jig and loose tenons
- 8 mm cutter size for matching mortise work within that system
Cleaner Mortises, Less Cleanup
The carbide tip is the detail that matters when you care about joint quality. Cleaner mortises mean better-fitting loose tenons and less time fussing with fit before glue-up.
- Carbide-tipped cutting end for clean, finished mortises
- Made for woodworking joinery where edge quality affects final fit
Set Depth Once and Repeat It
Depth control is what keeps loose tenon joinery predictable. The stop collar helps you dial in the cut and repeat it across multiple workpieces without chasing your setup.
- Stop collar supports precise mortise depth
- Useful for repeated cuts on rails, stiles, panels, and case parts
What’s in the Box
- (1) Kreg Tool KLTJC-M08 8 mm mortising cutter
- (1) Stop collar
Key Specifications
| Cutter Size | 8 mm |
|---|---|
| Tool Type | Mortising cutter |
| Tip Material | Carbide-tipped |
| Depth Control | Stop collar included |
| Primary Use | Loose tenon mortise cutting |
| Model Number | KLTJC-M08 |
Compatibility
Jig Compatibility Exclusively for use with the Kreg MortiseMate Loose Tenon Jig. Joinery System Designed to cut mortises for use with Kreg loose tenons.
Built For
Woodworking Cabinetry Furniture Building Loose Tenon Joinery Shop-Made Casework Serious DIY / Hobbyist
Pro Tip
Before you cut a full batch of parts, set the stop collar using a scrap from the same material thickness and test-fit your loose tenon. That quick check usually saves you from fixing a whole stack of mortises that are just a little too shallow or too deep.
Tool Nut’s Take
Tool Nut’s Take
Kreg Tool KLTJC-M08 Mortising Cutter Keeps the System Simple
If you already run the MortiseMate setup, this is the right cutter when you need the 8 mm size and want clean, repeatable loose tenon joinery without overcomplicating the process.
- Who it’s for: Woodworkers and cabinet builders using the Kreg MortiseMate Loose Tenon Jig for precise joinery.
- Why it stands out: The carbide-tipped cutter and stop collar focus on the two things that actually matter here: clean mortises and consistent depth.
- Worth knowing: This is a system-specific accessory, not a general-purpose cutter. Buy it because you need the 8 mm MortiseMate option, not because you want a catch-all joinery bit.
Common Questions
- What is this cutter used for? It is used to cut 8 mm mortises for loose tenon joinery.
- What system does it work with? The product images state that it is exclusively for use with the Kreg MortiseMate Loose Tenon Jig and loose tenons.
- Does it have a carbide tip? Yes. The images identify it as carbide-tipped for clean, finished mortises.
- How is mortise depth controlled? A stop collar is shown and identified for precise mortise depth.
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