How to Cerakote: A Comprehensive Guide

Ever wanted to give your firearm, knife, or even automotive parts a finish that’s not only incredibly durable but also looks amazing? Cerakote is a ceramic-based coating that’s revolutionizing the way we protect and customize our gear. Unlike traditional paints or coatings, Cerakote offers unparalleled resistance to abrasion, corrosion, chemicals, and impact. This means your prized possessions can withstand the toughest conditions while maintaining their aesthetic appeal, significantly extending their lifespan and retaining their value.

But Cerakote isn’t just for professionals. With the right knowledge and a bit of practice, you can achieve professional-quality results in your own workshop. Applying Cerakote opens up a world of customization possibilities, allowing you to personalize your items with a wide range of colors and finishes. From firearms to sporting goods, the possibilities are endless, making it a skill worth learning for any DIY enthusiast or professional looking to enhance their craft.

What are the key steps to successful Cerakote application?

What grit media is best for blasting before Cerakote?

100-120 grit aluminum oxide is generally considered the best media for blasting before applying Cerakote. This grit size provides an optimal surface profile for Cerakote adhesion, creating microscopic peaks and valleys that the coating can mechanically grip. It’s coarse enough to effectively remove contaminants and existing finishes, but not so aggressive that it excessively damages the underlying substrate or creates a surface that’s too rough for a smooth Cerakote finish.

The choice of media and grit is crucial for proper Cerakote adhesion. While other media like glass bead or silicon carbide can be used in specific circumstances, aluminum oxide offers an excellent balance of effectiveness and surface preparation. The angular shape of aluminum oxide particles creates a more consistent and desirable surface profile compared to the rounded profile left by glass beads, which may be too smooth for optimal Cerakote bonding. Silicon carbide is sharper and more aggressive than aluminum oxide and, while effective for removing tough coatings, it can potentially damage more delicate substrates if not used carefully. Furthermore, ensure the blasting media is clean and free from contaminants like oils or moisture. Contaminated media can transfer those impurities onto the surface, negatively impacting Cerakote adhesion and potentially leading to coating failures like peeling or flaking. Always use a dedicated blasting cabinet and air compressor equipped with moisture traps and filters to ensure a clean blasting process. A properly prepared surface is the foundation of a durable and aesthetically pleasing Cerakote finish.

How critical is temperature control during Cerakote curing?

Temperature control during Cerakote curing is absolutely critical. Deviations from the recommended temperature range can significantly compromise the coating’s final properties, including its hardness, durability, chemical resistance, and overall performance. Insufficient temperature may result in incomplete curing, leaving the coating soft and prone to scratches and wear. Excessive temperature can lead to discoloration, blistering, or even coating failure.

Achieving the correct cure temperature is not just about hitting a target number; it’s about maintaining that temperature *consistently* throughout the entire curing cycle. Cerakote is a thermosetting polymer, meaning that a chemical reaction occurs at specific temperatures, permanently altering its structure. This cross-linking process requires precise thermal energy input. Uneven heating within the curing oven, or temperature fluctuations, can cause inconsistencies in the coating’s structure, leading to localized areas of weakness or altered appearance. Therefore, investing in a quality oven with accurate temperature control and monitoring is essential for achieving professional and reliable Cerakote results. Several factors can influence the actual temperature of the part being coated, even with a calibrated oven. The mass of the part, its material composition, and its placement within the oven can all affect how quickly and evenly it heats up. It’s crucial to allow sufficient preheating time for the part to reach the target temperature before starting the official cure cycle. Using temperature probes attached directly to the coated part is highly recommended to ensure accurate monitoring and prevent over- or under-curing. Moreover, proper airflow within the oven is vital to distributing heat evenly across all surfaces of the item being cured.

What’s the best method for applying Cerakote to small parts?

The best method for applying Cerakote to small parts involves careful preparation, proper application technique using a spray gun with a fine nozzle, and precise curing. This usually entails media blasting, thorough degreasing, hanging or racking parts for even coating, applying thin, even coats of Cerakote, and then curing the parts in a dedicated oven according to the manufacturer’s specifications. Precise temperature control is crucial for achieving the desired hardness and durability.

Applying Cerakote to small parts requires a more delicate approach compared to larger items. The key is to avoid applying too much material at once, which can lead to runs, drips, and an uneven finish. Using a smaller, detail-oriented spray gun with a fine nozzle (typically around 0.8mm or smaller) is essential for achieving uniform coverage. The spray gun should be properly adjusted to deliver a consistent and fine mist. It’s also important to maintain a consistent distance and angle from the part while spraying, ensuring each coat is thin and even. Multiple thin coats are preferable to one thick coat. Proper preparation is equally crucial. Small parts must be thoroughly cleaned and degreased to ensure proper adhesion of the Cerakote. Media blasting is often used to create a surface profile that promotes mechanical bonding. Furthermore, consider how you’ll hold or suspend the small parts during spraying and curing. Using wire hangers, custom-made racks, or even jigs can help you coat all surfaces evenly without touching the parts and compromising the finish. Finally, following the manufacturer’s recommended curing schedule (temperature and time) is critical for achieving optimal hardness, chemical resistance, and overall performance of the Cerakote finish.

How do you properly degrease a part before Cerakoting?

Proper degreasing is paramount to achieving a durable and flawless Cerakote finish. This involves thoroughly removing all oils, grease, lubricants, and contaminants from the part’s surface using a combination of solvents, heat, and physical abrasion to ensure proper adhesion of the Cerakote coating.

The degreasing process typically begins with a solvent wash. Acetone, denatured alcohol, or specialized degreasers designed for metal preparation are excellent choices. Apply the solvent liberally to the part and scrub with a clean, lint-free cloth or brush. Pay particular attention to crevices, threaded areas, and any spots where grease or oil may have accumulated. Multiple solvent washes may be necessary for heavily soiled parts. After the solvent wash, it is often recommended to use a media blasting process using aluminum oxide. This is done to create a rough surface texture, to further clean the substrate, and to create a mechanical bond for the Cerakote. Following the solvent cleaning, a bake-out process is typically employed. Heating the part in an oven (dedicated for this purpose and separate from your Cerakote oven) to around 300-400°F (150-200°C) for at least an hour helps to draw out any residual oils or contaminants that may be trapped within the metal’s pores. After the bake-out, allow the part to cool and inspect it carefully. If any oily residue is visible, repeat the solvent wash and bake-out. The final step before applying Cerakote is usually a final wipe down with a clean solvent to remove any lingering dust or fingerprints. Remember to wear appropriate personal protective equipment, including gloves and eye protection, throughout the degreasing process to avoid skin contact with solvents and contaminants.

What causes Cerakote to chip or flake after application?

Cerakote chipping or flaking post-application is almost always attributable to inadequate surface preparation prior to coating, improper application techniques, or incorrect curing procedures. These factors compromise the coating’s adhesion to the substrate, leading to premature failure.

Surface preparation is arguably the most critical step. Cerakote relies on a strong mechanical bond with the substrate. Any contaminants like oils, grease, rust, or existing coatings must be completely removed via methods such as media blasting (aluminum oxide is commonly used), followed by thorough degreasing. Insufficient blasting leaves residue that prevents proper bonding. Furthermore, different substrates may require specific blasting media or profiles to achieve optimal adhesion. For example, steel often benefits from a coarser blasting media than aluminum. Application errors can also lead to chipping. Applying Cerakote too thickly can create internal stresses within the coating as it cures, leading to cracking and eventual flaking. Conversely, applying it too thinly may result in inadequate coverage and protection, making the coating more vulnerable to damage and chipping. Proper spray gun settings (pressure, nozzle size) and technique (distance, overlap) are crucial for achieving a uniform and correctly-thick coating. Finally, improper curing can drastically affect Cerakote’s durability. Cerakote requires specific oven temperatures and dwell times as outlined by the manufacturer. Under-curing leaves the coating soft and susceptible to damage, while over-curing can make it brittle and prone to chipping. Using an oven with uneven temperature distribution can also lead to inconsistent curing across the part, creating weak points where chipping is more likely to occur.

Can you Cerakote over existing coatings or finishes?

Generally, Cerakoting directly over existing coatings or finishes is not recommended. Proper adhesion and the overall durability of the Cerakote finish rely heavily on a clean, properly prepared substrate. Simply applying Cerakote over an existing finish can lead to chipping, peeling, and premature failure of the Cerakote layer.

While it might seem tempting to save time and effort by coating directly over an existing finish, the potential issues far outweigh any perceived benefits. Most existing coatings, such as paint, anodizing, or bluing, are not designed to bond with Cerakote. These existing layers can act as a barrier, preventing the Cerakote from properly adhering to the base metal. This weak bond is susceptible to damage from impacts, abrasions, and even temperature changes, ultimately shortening the lifespan of the Cerakote finish. The ideal method involves completely removing the existing finish through media blasting or chemical stripping. This creates a clean, slightly roughened surface that provides an optimal profile for the Cerakote to mechanically adhere to. In some very specific circumstances, a *very* light surface prep may be acceptable over certain coatings, but this is rare and should only be attempted after consulting with a Cerakote expert and performing thorough testing. The key is to prioritize a proper foundation for the Cerakote to bond with to ensure a long-lasting and durable finish.

What are the safety precautions when spraying Cerakote?

Spraying Cerakote requires strict adherence to safety precautions to protect yourself from harmful vapors and potential hazards. The most crucial steps include wearing appropriate personal protective equipment (PPE) such as a respirator with organic vapor cartridges, gloves (nitrile or similar), and eye protection. Additionally, spraying should be performed in a well-ventilated area or a dedicated spray booth equipped with proper ventilation and filtration systems to minimize exposure to airborne particles and solvents.

Cerakote, while a durable and effective coating, contains solvents and chemicals that can be harmful if inhaled, ingested, or come into contact with skin. A respirator with organic vapor cartridges is essential to filter out these harmful vapors, preventing respiratory irritation and long-term health issues. Gloves, preferably nitrile or a similar chemical-resistant material, prevent skin absorption of the chemicals. Eye protection, such as safety glasses or a face shield, protects your eyes from splashes and airborne particles, preventing irritation or damage. Proper ventilation is vital for dispersing Cerakote vapors and preventing their build-up in the work area. A dedicated spray booth with an exhaust fan and filtration system is the ideal solution, as it effectively removes airborne particles and solvents, ensuring a safer environment. If a spray booth is not available, spraying in a well-ventilated area with open windows and fans to create airflow is crucial. Furthermore, avoid eating, drinking, or smoking while spraying Cerakote to prevent accidental ingestion or contamination. Always consult the Cerakote product’s Safety Data Sheet (SDS) for specific hazard information and recommended safety measures.

Alright, you’ve got the basics down! Cerakoting can seem intimidating at first, but with patience and practice, you’ll be turning out professional-looking finishes in no time. Thanks for taking the time to learn with us, and we hope this guide has been helpful. Come back and visit us again soon for more tips, tricks, and how-tos on all things gun-related (and more!). Happy coating!