A Small Tip In Sheet Metal Shop

Are you still grinding out die marks on every mirror stainless or pre-painted job? Here’s the a small trick that instantly upgrades you to “premium shop” status: PU No-Mark Tape (the magical film that makes V-die shoulder marks DISAPPEAR )

Real-world results:
- Zero marks on mirror #304, brushed aluminum, pre-coated, even titanium-plated sheets
- No more hours of polishing after bending
- Tighter tolerances because spring-back becomes stupidly consistent
- Your dies last longer too (bonus!) 

How to use it:

- Deep-clean the die before sticking (alcohol wipe + air blow)
- 0.7–0.8 mm thick tape for stainless, 0.4–0.5 mm for aluminum/soft stuff
- Go 1–2 V-sizes wider than normal (trust me)
- Change it every 500–800 bends or when you see hairline cracks 

A small tip can make a little improvement. When you implement them more, you will get profit!