Freud FI102 4 in. 8-Tooth Replacement Blade for JS100, JS102 or Similar Biscuit Joiner is a replacement biscuit joiner blade for restoring cut quality on compatible plate joiners. This is a replacement blade designed for cutting biscuit slots in wood for joinery work. Model Number: FI102. If your joiner is leaving rough slots, burning material, or taking more effort to plunge, this is the part that fixes the actual cutting problem instead of working around a worn blade.

The core specs are straightforward and useful: a 4-inch diameter blade, 22 mm bore, and 8-tooth layout. Freud also calls out Super Micrograin Carbide teeth, which is the part that matters most in real use. Carbide holds its edge longer than a basic steel blade, so you get more consistent biscuit slots over time and less drop-off in cut quality when you are working through plywood, hardwood, or solid stock.

This blade is built specifically for biscuit joiners including the Freud JS100 and JS102, and it is also listed for use with similar biscuit joiners. That makes it a practical replacement part for woodworkers who want to keep an older machine in service instead of replacing the whole tool. The 22 mm bore is a key fitment detail, so this is not a generic saw blade purchase. It is meant for joiners that use this blade size and arbor format.

The 8-tooth configuration makes sense for biscuit joinery. You are not chasing a fine-finish crosscut here. You need a blade that plunges cleanly, clears material efficiently, and leaves a slot that fits the biscuit properly. Freud also lists a kickback-reducing design, which is a useful feature on a plunge-style joiner where control and predictable entry into the workpiece matter more than flashy specs.

For shop use, this is the kind of accessory that directly affects accuracy and workflow. A sharp, properly sized biscuit joiner blade helps the machine cut faster, track cleaner through the plunge, and reduce scorching or ragged slot walls. That matters when you are aligning panels, building cabinets, assembling face frames, or doing furniture work where repeatable slot placement and fit save time during glue-up.

Who should buy it? Anyone running a compatible biscuit joiner who wants better slot quality than a worn factory blade can deliver. It makes the most sense for woodworking, cabinet work, furniture building, and general joinery where biscuit alignment is part of the process. If your machine fits a 4-inch blade with a 22 mm bore and you need a direct replacement for a biscuit joiner, this Freud blade is the right kind of purchase: specific, functional, and job-focused.

Small Part, Big Difference

The Freud FI102 is the kind of upgrade that makes an average biscuit joiner feel right again, because the blade is what does the real work.

• Who it's for: Woodworkers, cabinet guys, and serious DIY users running a compatible biscuit joiner that needs a proper replacement blade.
• Why it stands out: The 4-inch size, 22 mm bore, 8-tooth layout, and carbide teeth make it a purpose-built biscuit joiner blade instead of a generic substitute.
• Worth knowing: This is a single replacement blade, so fitment matters. Check your joiner's blade diameter and bore before ordering.

• What kind of tool is this blade for? This blade is for biscuit joiners, also called plate joiners, used to cut slots in wood for biscuit joinery.
• Which models is it listed to fit? Freud lists it for the JS100, JS102, and similar biscuit joiners.
• What are the key sizing details? The blade diameter is 4 inches and the bore diameter is 7/8" (22 mm).
• How many teeth does the blade have? It has 8 teeth.