Best Mortiser Attachments for Drill Presses for Precision Woodworking
The right mortising attachment can transform a standard drill press into a dedicated mortise and tenon workstation. This article reviews five popular mortising attachments that fit various bench drill sizes, expanding your capabilities with square-hole mortises, durable materials, and precision chisel sets. Each product section includes key features, compatibility notes, and practical considerations to help you compare options for your workshop needs.
| Product | Brand | Key Benefit |
|---|---|---|
| Mortising Attachment For Drill Press Set | BMTURNING | Includes locator, press block, side positioning rod, and four chisel sizes |
| Mortising Attachment For Drill Press Kit | LNROE-K | Four chisels; compact storage in included boxes; high cutting efficiency |
| YUEWO Mortising Attachment For Drill Press | YUEWO | Complete with four chisels; fits multiple quill diameters; durable construction |
| Drill Press Mortising Attachment Kit | Mefape | Four chisels; compatible with various bench drill quill sizes; precise square holes |
| YUEWO Mortising Attachment For Drill Press | YUEWO | Comprehensive quill size compatibility; durable cast iron and steel build |
Note: Compatibility varies by bench drill quill diameter and table height. Always verify the needed collar diameter and vertical clearance before purchase to avoid installation issues.
Mortising Attachment For Drill Press Set – BMTURNING

This mortising attachment set includes a locator, press block, side positioning rod, fixed seat, and other accessories. It comes with four mortise chisel sizes: 1/4″, 3/8″, 1/2″, and 5/8″. The drill bit is constructed from high-quality steel designed to resist blockage by sawdust, providing fast cutting and high hardness. A collar diameter of 65mm with reducers to 60mm, 55mm, 52.5mm, and 40mm allows use with a range of bench drills. The vertical distance requirement is at least 15.7 inches between the bench drill chuck and workbench; confirm your setup before ordering.
LNROE-K Mortising Attachment Kit – 4 Model Drills

The LNROE-K kit includes a locator, press block, side positioning rod, fixed seat, and four chisels (1/4″, 1/2″, 3/8″, 5/8″). It ships with storage boxes for portable organization. The square hole drill bit is steel, ensuring high hardness and fast cutting. It is designed for drill presses with specific bench drill diameters, notably 2.07–2.36 inches, and a minimum 15.7-inch vertical clearance between chuck and workbench. Safety is advised when removing sharp chisels due to their geometry and sharpness.
YUEWO Mortising Attachment For Drill Press

YUEWO’s mortising attachment fits bench drill quill diameters of 2.09″, 2.17″, 2.28″, 2.36″, and 2.56″. It includes four mortise chisels (1/4″, 3/8″, 1/2″, 5/8″) and enables turning a drill press into a mortising and tenoning machine for square-hole work. The unit is built from cast iron and steel, with heat-treated components to ensure hardness, durability, and efficient drilling performance. It emphasizes high precision and long service life for hobbyists and professional woodworkers alike.
Drill Press Mortising Attachment Kit – Mefape

Mefape’s kit supports bench drill quill diameters of 2.09″, 2.17″, 2.28″, 2.36″, and 2.56″. It includes four mortise chisels (1/4″, 3/8″, 1/2″, 5/8″), designed to create precise, professional square holes. The kit emphasizes easy conversion of a drill press into a mortising tool, enabling efficient square-hole mortising in woodworking projects. The components are designed to fit standard bench drill configurations, with emphasis on alignment and stable operation during cutting.
YUEWO Mortising Attachment – Additional Model

This YUEWO model extends compatibility to bench drill quill diameters of 2.09″, 2.17″, 2.28″, 2.36″, 2.56″, 2.95″, and 3.62″. It includes four mortise chisels (1/4″, 3/8″, 1/2″, 5/8″), enabling the creation of precise, professional-looking square holes. It emphasizes durable construction from cast iron and steel with post-heat-treatment strength to sustain high-speed drilling and long-term use. The attachment aims to simplify mortise and tenon joinery across a range of projects.
Buying Guide: Key Purchase Considerations
- Bench drill compatibility: Confirm the quill diameter, collar size, and the required vertical clearance between chuck and workbench. Incompatible dimensions prevent proper installation or reduce performance.
- Chisel set completeness: A complete kit with 1/4″, 3/8″, 1/2″, and 5/8″ chisels covers common mortise sizes. Some kits offer additional sizes or storage boxes for organization.
- Material and build quality: Look for cast iron and steel components, with heat-treated parts for durability and long-term accuracy under load.
- Attachment alignment and safety: Precision alignment and sharp chisels demand careful handling and wearing eye protection. Consider safety notes provided by the manufacturer.
- Ease of converting existing equipment: Some attachments are designed to be easily mounted to standard bench drills; others may require additional adapters or clamps. Verify what is included and what may be needed separately.
- Storage and portability: Kits that come with storage boxes help keep chisels organized and prevent loss of small parts.
- Intended use: These attachments are specialized for mortising and may not pair well with all drill press configurations or other woodworking tasks.
When planning your purchase, compare the included components, compatibility notes, and installation requirements across models. A well-chosen mortising attachment not only expands your capabilities but also enhances precision and repeatability for joinery projects.