Optimizing Screen Exposure with the NuArc 26-1K Mercury Exposure System

The NuArc 26-1K Mercury Exposure System is a popular choice among screen printers for its reliability and ease of use. Whether you're a seasoned professional or new to screen printing, understanding how to maximize the capabilities of this exposure unit can enhance your workflow and the quality of your prints.

Overview of the NuArc 26-1K Mercury Exposure System

The NuArc 26-1K is designed to provide consistent and precise exposure for screen printing. Key features include preset exposure times, a vacuum system to ensure contact between the stencil and the screen, and a durable build. However, like any equipment, it requires proper maintenance and understanding to function at its best.

Setting Exposure Presets

To set exposure presets on the NuArc 26-1K:

1. Turn on the Unit: Ensure the machine is properly connected and powered on.
2. Select the Preset Mode: Access the control panel and navigate to the preset mode.
3. Adjust Exposure Time: Set the desired exposure time for your screens. This can vary depending on the type of emulsion and artwork density.
4. Save the Preset: Confirm the settings and save the preset for future use.

Using presets saves time and ensures consistency across multiple screens, improving the efficiency of your screen printing process.

Maintenance Tips

Frame Flatness

Ensure that your frames are flat and not warped. Warped frames can put stress on the glass of the exposure unit, potentially causing it to crack. If you encounter a cracked glass, consider sourcing a replacement from a local glass company, which can be more cost-effective than purchasing directly from NuArc.

Rubber Bladder

The rubber bladder in the vacuum system can wear over time. Tears in the bladder prevent the creation of a proper vacuum, which is essential for keeping the artwork flat against the emulsion. Small tears can be patched using tire patches, but regular inspection and maintenance are crucial.

Practical Usage Tips

Choosing the Right Material

When creating stencils, using vellum instead of film can be a cost-effective alternative. Vellum is cheaper and, when used correctly, provides comparable results to film.

Enhancing Toner Density

For those using toner-based prints, running the print through a t-shirt dryer before exposure can darken the toner, creating a denser image that burns better onto the screen.

Seeking Manuals and Further Assistance

Operating manuals are invaluable for understanding all the features and troubleshooting issues with the NuArc 26-1K. If you purchase a unit without a manual, try reaching out to NuArc directly or searching online forums and communities for digital copies.

Community Support

Engaging with the screen printing community can provide additional insights and support. Many users have extensive experience with different models and can offer practical advice. If you're struggling with a specific issue, forums and discussion groups can be a great resource for troubleshooting and tips.

Conclusion

The NuArc 26-1K Mercury Exposure System is a reliable tool for screen printers, but maximizing its potential requires proper use and maintenance. Setting exposure presets, maintaining the frame and bladder, and using cost-effective materials like vellum can significantly enhance your screen printing process. For more detailed guidance, consider consulting the manual or seeking advice from experienced users in the community.

For further tips and tutorials, follow our YouTube Channel and check out our tech blog. If you're local to Greensboro, North Carolina, feel free to visit us for more personalized assistance.