Why Care Matters for Pre-Owned Customs
Pre-owned custom knives often come with unique surface finishes and premium materials that need specific care. The Enrique Pena Custom Rhino Flipper and Neil Blackwood Pipsqueak are two examples where the hand-finishing and exotic materials—like timascus, anodized titanium, and carbon fiber—require a gentle touch to preserve their appearance and function.
This guide covers the basics of cleaning and maintaining a pre-owned custom folder, focusing on what the supplied specifications tell us about these two models.
General Cleaning Steps for a Custom Folder
The following steps apply to most custom framelock knives. Always check the maker's instructions if available.
- Disassemble with care: Remove the pivot screw and disassemble the knife into its main components: blade, scales, and hardware. Keep track of small parts.
- Clean the blade: Use a soft, lint-free cloth and mild soapy water to wipe the blade. Avoid abrasive cleaners that could damage hand-rubbed satin finishes or acid-etched patterns like the Pipsqueak's acid river wash.
- Clean the handle and hardware: For titanium frames with anodized finishes (like the bronze-anodized Rhino or the blue-anodized Pipsqueak), use a damp cloth. Do not use alcohol or solvents directly on anodized surfaces, as they may dull the color.
- Lubricate the pivot: Apply a small drop of lightweight oil (like Nano-Oil or a similar product) to the pivot bearing area. The Rhino runs on a high-grade bearing system, and the Pipsqueak uses a hand-fitted titanium framelock. Too much oil can attract dust.
- Reassemble and test: Reassemble the knife and adjust pivot tension to your preference. Check for smooth deployment and lockup. The Rhino should feel snappy and hydraulic, while the Pipsqueak should have a vault-like lockup with zero play.
Special Attention to Finishes
The Enrique Pena Custom Rhino Flipper features a hand-rubbed satin finish on its CPM S30V blade, which is a labor-intensive process that creates fine, directional grain lines. Avoid using metal polishes or abrasive cloths that could remove these subtle lines.
The Neil Blackwood Pipsqueak has an acid river wash on its S90V blade, giving it a dark, weathered pattern. This finish is durable but can be scratched by harsh cleaning tools. Stick to a soft cloth and mild soap.
Timascus pivot collars and pocket clip on the Rhino can show vivid colors (blues, purples, bronzes) that shift with light. Clean these with a dry microfiber cloth only—chemicals can strip the oxide layer that creates the colors.
What the Catalog Confirms About These Models
- Enrique Pena Custom Rhino Flipper (Pre-owned): The Enrique Pena Custom Rhino Flipper has a hand-rubbed satin finish on a CPM S30V blade, anodized bronze titanium frames, and timascus pivot collars and pocket clip. These finishes require gentle cleaning to avoid removing the hand-rubbed lines or damaging the anodized color and timascus oxide layer.

Enrique Pena Custom Rhino Flipper (Pre-owned) - Neil Blackwood Pipsqueak Folder (Pre-owned): The Neil Blackwood Pipsqueak features a Bohler S90V blade with an acid river wash finish, stonewashed and blue-anodized titanium framelock, and carbon fiber scales. The acid river wash is a proprietary-style etching that can be dulled by abrasive cleaners. The stonewashed titanium hides wear well but should still be cleaned gently.

Neil Blackwood Pipsqueak Folder (Pre-owned)
When to Seek Professional Service
If you notice excessive blade play, a gritty pivot, or lock stick that doesn't improve with basic lubrication, consider sending the knife to a professional custom knife maker or a reputable sharpening service. Both the Rhino and Pipsqueak are hand-fitted customs—disassembly beyond basic cleaning may affect the precise tolerances.
For the Rhino, the detent is perfectly tuned from the maker; adjusting it without experience could ruin the hydraulic feel. Similarly, the Pipsqueak's vault-like lockup is achieved through hand-fitting, so avoid aggressive cleaning of the lock face.



