Woodworking Cabinet Assembly Jigs – 12mm, 15mm, 16mm, 18mm, 20mm Compatible Corner and Shelf Set

Speed up and simplify cabinet assembly with this woodworking cabinet assembly jig set, designed to hold panels square and aligned while drilling and fastening.

These jigs are ideal for assembling cabinet carcasses from plywood, MDF, particle board, or similar sheet materials. The angled corner pieces keep panels perfectly aligned, while the central shelf pieces help position and secure internal shelves accurately.

Available Material Thickness Options

Select the option that matches your material:

• 0.5 inch

• 12 mm

• 15 mm

• 16 mm

• 18 mm

• 20 mm

• ¾ inch (19 mm)

Additional sizes can be expanded if needed.

What’s Included (1 Set)

• 4 angled corner jigs – for cabinet corners

• 2 central shelf jigs – for shelf positioning and installation

Key Features

• Accurate 90° Alignment – Keeps panels square during assembly

• Faster Cabinet Build – Drill and screw with confidence and repeatability

• Works with Common Sheet Materials – Plywood, MDF, DTD, particle board

• Compact & Efficient Design – Uses less material while maintaining strength

• Reusable & Consistent – Ideal for batch cabinet assembly

How to Use

1. Place two cabinet panels into the jig

2. Drill pilot holes using the jig as a guide

3. Insert screws lightly (do not fully tighten)

4. Remove the jigs

5. Fully tighten the screws

6. Repeat for remaining corners or shelves

Using multiple jigs allows you to dry-assemble the entire cabinet, drill all holes in one pass, and complete assembly in minutes.

Perfect for DIY builders, workshop use, and professional cabinetmakers looking for faster, cleaner, and more consistent results.

Build square cabinets—faster, easier, and more accurately.