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SKU:
SZ1C07507
Ships for free in 2–4 business days.
7-Piece Hollow Square Mortise Chisel Bit Set 6mm to 14mm for Woodworking
$68.99
In Stock
$68.99
Sale price
$68.99
Regular price
This seven-piece high-speed-steel hollow mortise chisel set cuts square mortises in wood when used with a compatible hollow-chisel mortiser or mortising attachment.
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Compatible Models
We do our best to list all compatible models. Although this may be the part you need, your exact model may not appear below.
Compatible equipment / model
- Compatible hollow-chisel mortising machines
- Drill presses equipped with a correctly sized mortising attachment
- Woodworking setups that accept the listed shank and chisel dimensions
Product Overview
Round drill bits cannot leave the square corners needed for many tenons, lock bodies, and traditional joints. Each tool in this set pairs an internal auger with a square hollow chisel so chips are bored out while the outer chisel forms the mortise walls.
These are not ordinary bits for unsupported use in a handheld drill. The machine must hold and align the square chisel while driving the auger, and its chuck and bushing dimensions must accept the selected tool.
Key Features & Performance
- Seven sizes cover fine furniture work through larger joinery
- Hollow chisel and internal auger cut the center and square corners together
- High-speed-steel cutting components for woodworking service
- Useful for repeatable mortises in shop production
- Organized size range from 6mm through 14mm
Common Uses
- Cutting mortises for mortise-and-tenon joints
- Making square recesses for locks and hardware
- Building furniture, doors, frames, and cabinetry
- Producing repeat joints more consistently than hand chopping
Technical Specifications
- Product Type: Hollow square mortise chisel bit set
- Quantity: Seven
- Sizes: 6mm, 6.4mm (1/4in), 8mm (5/16in), 9.5mm (3/8in), 10mm, 12.7mm (1/2in), 14mm (9/16in)
- Material: High-speed steel cutting components
- Work Material: Wood
Installation & Fitment
- Confirm the machine's chuck, shank, and chisel-bushing capacity
- Set the auger slightly below the chisel points so chips can clear
- Clamp the workpiece firmly and use the machine hold-down
- Withdraw in stages on deep cuts to clear chips and control heat
- Keep augers sharp and clean resin from the chisel before storage
Compatibility Notice
Northline Parts does its best to list all known compatible models, but the correct part may fit an application not shown.
Model names and year ranges are a starting point. Match the original reference number, configuration, connections, mounting points, and product-specific details before ordering.
Frequently Asked Questions
Q: Can these be used in a normal handheld drill? A: No. A hollow chisel must be held stationary by a compatible mortiser or mortising attachment.
Q: Why does the auger project below the chisel? A: A small lead lets the auger remove material before the square chisel shears the corners.
Q: Will every size fit every mortiser? A: No. Check shank, chuck, and chisel-bushing dimensions first.
Part Summary
keywords: square hole mortise chisel set, seven piece mortising bits, 6mm hollow chisel bit, 1/2 inch mortise bit, woodworking mortiser tool set, mortise and tenon cutting bits, high speed steel hollow chisels, square recess woodworking tools
Brand names, model numbers, and reference part numbers are used for identification and compatibility purposes only. Verify the original component, dimensions, and application before purchase.