The cartridges behind the knowledge.

• What are tattoo cartridges? +
  Tattoo cartridges are single-use needle systems that attach to compatible rotary machines. They combine the needle, tip, and a safety membrane into one disposable unit — making setup faster, cleaner, and safer than traditional needle bars.
• What's the difference between RL and RS? +
  RL (Round Liner) is used for outlines, fine line work, and detail. RS (Round Shader) is used for soft shading and gradients. The difference is in the needle grouping geometry — round liners are tightly grouped for precision, round shaders are spaced slightly wider for softer ink deposit.
• Should I choose 0.30mm or 0.35mm needle diameter? +
  0.30mm (#10) gives more precision and is better for fine detail, single-needle work, and delicate techniques. 0.35mm (#12) is the standard for most professional applications — lining, shading, and color packing. When in doubt, start with #12.
• How often should cartridges be changed during a session? +
  Most professional artists change cartridges every 1–2 hours or between major configuration changes. Never reuse a cartridge across multiple clients. If ink flow becomes inconsistent or the needle feels dull, change it immediately regardless of time elapsed.
• Are tattoo cartridges universal? +
  Most cartridges fit standard rotary machines and grips using the industry-standard connection system. Some machines use proprietary systems — always check compatibility before ordering. BigWasp cartridges are compatible with most rotary machines and standard cartridge grips including Cheyenne Hawk systems.
• How many cartridges do I need per session? +
  It depends on session length and style. A standard 3–4 hour session typically uses 3–6 cartridges. A full-day booking across multiple configurations can use 10–15. Buying in bundles ensures you're never short mid-session.
• What is a safety membrane in a tattoo cartridge? +
  A safety membrane is a thin silicone barrier inside the cartridge that prevents ink and blood from flowing back into the tattoo machine grip. It protects the machine from contamination, maintains hygiene between cartridge changes, and helps regulate consistent ink flow during the session. All BigWasp cartridges include a safety membrane as standard