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Square-Hole Drill Jig

Square-Hole Attachment Easy to Use Carpentry Square-Hole Drill Jig Precision Mortising Jig with Adjustable Clamp for Furniture Builders

$25.44 Free shipping · tax calculated at checkout

Total $25.44 · free shipping · sales tax calculated at checkout

In stock · leaves our partner warehouse within 4 business days

  • Ships from our partner warehouse in ChinaFree to the US · arrives in 11–21 days
  • 30-day returnsUnused items · see policy
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WARNING: This product can expose you to chemicals including formaldehyde, which is known to the State of California to cause cancer. For more information go to www.P65Warnings.ca.gov.

Package size
23 × 16 × 8 cm (9.1 × 6.3 × 3.1 in)
Weight
0.28 kg (0.62 lb)
Category
Workshop & Tools
Delivery
Free standard shipping to the US, 11–21 days from order, shipped from our partner warehouse in China
Returns
30-day returns on unused items

Item DCD-10001568868

About this item

Product Identity: This square-hole attachment is a dedicated carpentry tool built to expand the capabilities of your existing workshop equipment for joinery tasks.
Core Function: As a drill attachment, it works with compatible drill and square-hole bit trim and tidy, defined square mortises in wood pieces of varying thickness.
Construction: This mortising attachment features a rigid aluminum-alloy rectangular frame with a hollow body, cylindrical upper socket, and lower circular opening for stable bit guidance.
Adjustable Design: This carpentry square-hole drill jig includes split lower clamp with an adjustment screw, letting you secure the tool firmly to workpieces for consistent results.
Intended Use: Designed for furniture builders and DIY carpentry enthusiasts, this precision jig supports stable, controlled mortising for joinery, cabinetry, and custom furniture projects.

If you work with wood regularly, you know how valuable a clean, accurate square mortise can be for strong joinery. This square-hole attachment is a dedicated carpentry tool that brings mortising capability to your existing drill setup, so you do not need to purchase a separate dedicated machine. As a versatile drill attachment, it pairs with compatible drill and a square-hole bit cut square mortises in solid wood, plywood, and other wood-based materials. Whether you are working on small craft projects or larger builds, it helps you produce consistent, clean-sided holes that fit tenonsBuilt as a mortising attachment, it features a rigid aluminum-alloy rectangular frame with a hollow internal body. The cylindrical upper socket directs your boring tool smoothly, while the lower circular opening aligns the cut with your workpiece, reducing wobble and improving cut accuracy throughout the process. This carpentry square-hole drill jig also comes with split lower clamp equipped with an adjustment screw. This lets you fasten the jig securely to of different sizes, so you can work with confidence understanding the guide will not move mid-cut, even under sustained pressure. Ideal for furniture builders, cabinet makers, and serious home mechanics, the attachment supports stable, controlled mortising for a wide range of joinery applications. From table legs and chair rails to frame joinery and custom casework, it helps you achieve clean, more repeatable results with less setup time, making it a practical addition to any carpentry workspace.

Option: Square Hole