Preventing the camera body paint from being scratched by friction between the camera body strap triangle ring and the plastic protector

1. The mechanics of paint peeling off the wings of the fuselage: high-frequency metal shearing and dry grinding

Why does an ordinary walking backpack cause the hard paint on the body to completely peel off?

• Microscopic friction pair of metal against metal (Friction Pair):
• The metal eye holes (Lugs) on the side of the camera body for fixing the shoulder strap are usually made of brass or stainless steel;
• The original factory standard shoulder strap connector is usually a flat metal triangle ring (Split Triangle Rings) made of hard spring steel wire;
• Micro-Fretting Wear:
• When you hang the camera around your neck or carry it cross-body while walking, the body and lens, which weighs 1.5kg~2.5kg, will swing back and forth, left and right, dozens of times per minute in accordance with the rhythm of the human body's pace;
• The metal triangular ring undergoes continuous high-frequency rotational micro-displacement in the lifting ear hole;
• What’s even more fatal is the side wings of the triangular ring: When carried diagonally across the body, the steel wire edges of the triangular ring are tightly attached to the side shell of the camera’s magnesium alloy body and are repeatedly scraped and squeezed;
• Within a few weeks, the hard anodized layer or polymer polyester electrophoretic paint on the surface of the casing was worn and peeled off by the high-hardness spring steel wire, and a deep crescent-shaped metal exposed copper scar (Brass Wear) was scraped under the lifting lug!

2. Aging and displacement trap of original plastic pads (Plastic O-Rings)

Nikon, Sony, Fuji and other fuselages usually have a tiny black plastic spacer or small leather piece placed behind the triangle ring when they leave the factory:

• Brittle and displacement defects:
• The ultra-thin plastic gasket provided by the original factory is usually only 0.5mm thick and has a hard texture;
• In severe cold temperatures (below 0℃) or after one year of ultraviolet irradiation, plastic molecules age and become brittle and can easily break and fall off;
• Flipping Displacement Disaster: During the pulling process of the strap, the small gasket often undergoes uncontrolled 180-degree flipping and misalignment, completely sliding out of the original protective isolation area, allowing the hard steel wire triangle ring to directly expose the hard-touched fuselage paint without any obstruction!

3. Practical guide for modification and repair of dual rigid and flexible protection

Professional modification solution to completely eliminate scratches on the fuselage:

1. Thick vegetable-tanned first-layer leather anti-scratch pads (Leather Bumper Guards):

• Choose matte scratch-resistant leather pads (such as classic Leica and Buckingham styles) stamped from 2.0mm thick cordovan leather or vegetable-tanned cowhide;
• The front of the leather pad is close to the triangle ring, and the back is made of extremely fine and soft suede (Suede) tightly attached to the surface of the camera metal casing;
• The natural leather is rich in oil and has excellent shock-absorbing damping and extremely low dry friction coefficient. Even if you walk thousands of kilometers with the camera on your back, the paint surface of the body will still be as smooth as new without any scratches.

2. Fully wrapped insulation modification with heat shrink tubing (Heat Shrink Tubing):

• A no-cost trick for geek photographers: purchase a small piece of pure black highly flame-retardant polyolefin double-wall heat shrink tubing with a diameter of 4mm;
• Cut the heat shrink sleeve to a suitable length and insert it into the outer steel wire edge of the metal triangular ring;
• Bake it gently with a lighter or heat gun for 3 seconds. The casing will shrink violently due to heat and tightly wrap around the surface of the steel wire, forming a layer of tough and wear-resistant thick rubber soft armor, completely eliminating any direct collision contact between the metal and the fuselage!

4. Ultimate relief: completely remove the triangle ring and replace it with a pure braided rope quick release system

The modern solution to end friction once and for all is to “sweep metal triangle rings into the trash can”:

• Straight-through high-strength bulletproof fiber tail rope (Peak Design Anchor Direct):
• If the camera’s ear hole is wide enough (such as Fuji X-T series, Sony new models);
• Pass Peak Design’s ballistic fiber anchor string directly through the body of the fuselage eyelet hole (without going through any metal transition rings!);
• There is pure microscopic contact between the rope and the lifting lugs with high-tenacity textile fibers, which are soft and smooth in texture and will not cause any physical scratches or wear to the surrounding paint surface at all;
• O-shaped round brass ring replacement method: For old Leica bodies such as Barnacle, replace with a solid burr-free brass ring with finely chamfered and polished inner ring and match it with a customized thick leather case, taking into account the pure retro aesthetics and flawless protection.

---