ReadyMILL Replacement SLICKCoat™ End Mill

Description

ReadyMILL Replacement SLICKCoat™ End Mill

The ReadyMILL Replacement SLICKCoat™ End Mill is a specialized router bit manufactured by 80 Lower for use with their Router Jig PRO ReadyMILL system. This end mill is designed for milling precise holes and cuts in 80% lower receivers, such as trigger pin holes, selector switches, and buffer tube threads. The “SLICKCoat™” refers to a proprietary low-friction coating applied to the bit, which minimizes resin buildup from machining unfinished aluminum and reduces wear on the tool and jig.

ReadyMILL Compatible with standard plunge routers (e.g., 1/2-inch collets), the end mill is made from high-grade carbide for durability and sharpness. Priced affordably, it’s a consumable replacement part that maintains the precision of the ReadyMILL jig, allowing builders to continue producing professional-grade results without frequent tool changes.

Key Features

• Carbide Construction: High-speed steel or carbide tip for clean, burr-free cuts in aluminum receivers.
• SLICKCoat™ Coating: Teflon-like layer that reduces friction, prevents resin adhesion, and extends bit life.
• Compatibility: Designed for 80 Lower’s Router Jig PRO ReadyMILL; fits most plunge routers with 1/2-inch shanks.
• Precision Geometry: Optimized flute design for efficient chip removal and accurate milling.
• Replacement Focus: Sold as a single or pack replacement for worn bits, ensuring consistent performance.

This end mill is essential for maintaining the efficiency of router-based jigs in firearm building.

The History and Reputation of 80 Lower and SLICKCoat™ Technology

ReadyMILL, founded in the early 2010s, revolutionized DIY firearm building with affordable 80% lowers and completion tools. They introduced router jigs to improve on drill-based systems, and SLICKCoat™ emerged as an innovation in 2018–2020 to address common issues like resin buildup and tool wear during machining. The ReadyMILL end mill with SLICKCoat™ was developed to complement their jigs, enhancing user experience.

The brand has earned praise for quality and education, with products reviewed on forums like AR15.com and Reddit. Users highlight SLICKCoat™’s effectiveness in keeping jigs clean and bits sharp, reducing maintenance. Despite regulations, 80 Lower remains a trusted name for compliant tools.

Why Choose the ReadyMILL Replacement SLICKCoat™ End Mill?

Advantages

• Enhanced Durability: SLICKCoat™ coating extends bit life by preventing wear and buildup.
• Improved Efficiency: Smoother cuts with less friction, speeding up machining.
• Precision Results: Maintains accuracy for safe, functional lower receivers.
• Cost-Effective: Affordable replacement that preserves jig investment.
• User-Friendly: Easy to install and use with existing routers.

Considerations

• Compatibility: Specific to 80 Lower jigs; check router fit.
• Maintenance: Still requires sharpening or replacement over time.
• Tool Requirements: Needs a plunge router for operation.

Builders choose this for reliable, long-term use, with testimonials noting it keeps builds clean and efficient.

Legality and Safety Considerations

Legality: End mills are legal tools in the U.S., but using them to complete 80% lowers must comply with federal laws (e.g., no serialization for personal use). Restrictions in states like California. Internationally, unfinished receivers may be banned.

Safety: Wear PPE, secure the receiver, and follow jig instructions. Use router shields to avoid injuries. Test completed lowers safely—poor cuts can cause malfunctions. 80 Lower provides guides for responsible use.

Step-by-Step Guide to Using the ReadyMILL Replacement SLICKCoat™ End Mill

1. Preparation: Install the end mill in your router’s 1/2-inch collet; ensure it’s secure.
2. Jig Setup: Mount the Router Jig PRO ReadyMILL on a workbench; clamp the 80% lower.
3. Router Settings: Set plunge depth and speed according to jig instructions (e.g., 0.5–1 inch for pins).
4. Machining: Guide the router along templates for holes and cuts; SLICKCoat™ reduces resistance.
5. Cleanup: Deburr the receiver; clean the bit and jig.
6. Testing: Assemble and function-check the completed lower.

Time: 20–40 minutes per lower. Resources: 80 Lower’s website for videos.

Pros and Cons of the ReadyMILL Replacement SLICKCoat™ End Mill

Pros

• SLICKCoat™ enhances longevity and ease.
• Precise cuts for reliable builds.
• Easy replacement for worn bits.
• Compatible with ReadyMILL jigs.
• Reduces maintenance time.

Cons

• Specific to 80 Lower systems.
• Requires router setup.
• May need periodic replacement.
• Generates dust; use ventilation.

Frequently Asked Questions (FAQs)

• What is SLICKCoat™? A low-friction coating that keeps the bit clean and operational.
• Compatible routers? Plunge routers with 1/2-inch collets.
• Is it legal? Yes as a tool; check build laws.
• How long does it last? Varies; SLICKCoat™ extends life.
• Where to buy? 80lower.com or firearm retailers.

Final Thoughts on the ReadyMILL Replacement SLICKCoat™ End Mill

The ReadyMILL Replacement SLICKCoat™ End Mill is a valuable upgrade for builders using router jigs, offering improved performance and durability. Its innovative coating makes machining more efficient and cleaner. Build safely, verify laws, and enjoy precise results.