Third hand tools for boards positioning

🧰 General Description – 3D Printable Woodworking Clamp Set (9-22mm)

A practical set of three 3D-printable tools designed for makers, woodworkers, and DIY enthusiasts 🛠️. Each tool is optimized for easy use, precision, and reliable holding power when assembling wooden boards, panels, or other building materials 📏.

These custom clamps help with:

• 90° corner joints 🔲
• T-joint board positioning 🔧 

Print once, use endlessly – compact, lightweight, and super useful additions to any workshop or home project! 💡

Board thickness range: 9 mm to 22 mm (in 1 mm increments)

✨ New – Scaling Calculator even in INCHES!

Need a perfect fit for a non-standard board thickness (e.g. 18.4 mm, 16.8 mm, etc.)?

→ Open Scaling Calculator

Just enter your board thickness and the calculator will give you the exact scaling percentage to use in your slicer.
 

🔧 90° Corner Jig

A precise tool for holding two boards at a right angle, ideal for building frames, cabinets, boxes, and shelving. This jig holds boards face-to-face and makes it easier to drill, glue, or screw them together.

✅ Perfect for corner joints
✅ Ensures strong, square connections

🔧 T-Joint Positioning Jig

Designed to help you align one board in the center of another, forming a T-shaped joint. Great for tables, shelves, or support frames. This tool ensures accurate and centered positioning every time.

✅ Simplifies T-joint assembly
✅ Ensures symmetry and balance
✅ Ideal for structural frames

🔧 Mid Edge Jig

Allows precise clamping of one board's end to the another board’s side when one is shorter then second – perfect for under-table supports or top rail of cabinet. Perfectly work with 90° Corner Jig.

✅ Secures end-to-side joints
✅ Helps maintain straight lines
✅ Excellent for bracing or internal framing

Two versions for each size:

• AMS (multi-color ready) in .step
• NO_AMS / Single Color  in .stl

❤️ Support the Creator

If you like this model and want to see more useful workshop tools, you can support me on Patreon.

Your support helps me create larger, more complete sets like this one and speeds up new releases.

→ Become a Patron ❤️

OR