Joining frames, whether for photos or artwork, requires precision and stability to preserve your cherished memories. Two tools commonly used for this purpose are picture frame joiners and nailer joining guns, often referred to as underpinners. In this article, we’ll compare these tools and help you determine which is the best choice for your framing needs.
Picture Frame Joiner
A picture frame joiner, also known as a manual joiner, is a traditional tool that woodworkers and framers have used for years. It operates as follows:
Method:
- A V-shaped groove is cut into the back of the frame pieces.
- A wooden V-nail is placed in the groove.
- Pressure is applied to push the V-nail into the wood, joining the frame pieces together.
Pros:
- Precision: Picture frame joiners offer precise control over the joining process.
- Minimal material damage: V-nails create small holes that are barely visible.
- Ideal for small projects and custom frames.
Cons:
- Manual operation: Slower and may require more effort.
- Limited to 45-degree joints.
Nailer Joining Gun (Underpinner)
A nailer joining gun, often referred to as an underpinner, is a more modern and efficient tool for frame joining. It functions as follows:
Method:
- Underpinners use specially designed inserts or wedges to join frame pieces together.
- These inserts are driven into the wood with compressed air or a hydraulic mechanism.
Pros:
- Speed: Underpinners are significantly faster, making them ideal for high-volume framing.
- Versatility: They can handle various joint angles.
- Ease of use: Requires minimal effort and is suitable for beginners.
- Consistent results: Provides uniform and reliable joinery.
Cons:
- May leave larger holes or marks compared to V-nails (though these are often hidden on the frame’s back).
Choosing the Right Tool
Picture Frame Joiner is Ideal When:
- You are working on small projects or custom frames.
- Precision and minimal damage to the material are top priorities.
- You are comfortable with manual tools and don’t mind slower work.
Nailer Joining Gun (Underpinner) is Preferred When:
- Speed and efficiency are essential, especially for high-volume framing.
- You need versatility in joining different angles.
- Consistency and ease of use are significant factors.
- Concealed holes or marks on the back of the frame are acceptable.
Conclusion
Choosing between a picture frame joiner and a nailer joining gun (underpinner) depends on your specific framing needs. While picture frame joiners offer precision and minimal material damage, underpinners excel in terms of speed, efficiency, versatility, and consistent results. Select the tool that aligns with your project requirements, ensuring your framed artwork or photographs stand the test of time.