I assume you have changed your tandem drawer slide hole patterns to drill only where you are going to fasten the slide. We use three system screws to fasten tandem slides.

- The standard blum tandem 552 5330 drawer slide hole pattern
- Drawer Slide Pattern 1.JPG (16.66 KiB) Viewed 9261 times

- The drawer slide hole pattern we edited from standard and use at our shop
- Drawer Slide Pattern 2.JPG (20.36 KiB) Viewed 9261 times
This could save you a lot of time on your tandem slides anyway.