Stripping Nonstick Coating From Pans: A Diy Guide

Non-stick pans are a popular option for those looking for easy cleanup or a stick-free cooking surface. However, non-stick coatings can break down over time, making it easier for food to stick to the pan's surface. In some cases, the coating may also begin to flake off during cooking, which can be a potential health hazard if ingested. While there are several methods to clean a burnt non-stick pan, removing the non-stick coating entirely may require more heavy-duty methods such as abrasive blasting, chemical solvents, or burning it off at high temperatures. However, these methods should be approached with caution as they may be unsafe for homeowners and can potentially damage the pan.

Use abrasive blasting with aluminium oxide blast media

Abrasive blasting with aluminium oxide blast media is a method that can be used to remove the non-stick coating from a pan. This process involves using specialised machinery to project or "shoot" media at high speed across the surface of the pan. Aluminium oxide is harder and sharper than glass beads and is ideal for paint removal and general cleaning applications. It is also frequently used for glass etching.

To use this method to remove the non-stick coating from a pan, follow these steps:

• Ensure you have the appropriate safety equipment, including a full suit, gloves, and an enclosed helmet with a carbon dioxide monitor, an inline cooling unit, and Grade "D" compressed air.
• Set up your blasting equipment, including an air compressor, filtration, and air lines. The compressed air delivered to your blasting equipment should be dry, cool, and free of oil and contaminants.
• Choose the correct air pressure and air volume for your blasting equipment. Typically, blasting pots require 80 PSI or more to function correctly.
• Select the appropriate blast nozzle orifice size. The smallest blast nozzle orifice is usually 3/16”. Using a smaller nozzle orifice will result in lower air consumption.
• Fill the blasting pot with aluminium oxide blast media but do not exceed the bottom of the sealing plunger.
• Adjust the media feed at the bottom of the pot while triggering the nozzle. You want to barely be able to see the media coming out of the nozzle. Too much media will clog the hose and slow down the media velocity.
• Begin the blasting process, directing the media at the non-stick coating on the pan.
• Once the coating has been removed, fine the surface of the pan to even out any irregularities.

It is important to note that abrasive blasting with aluminium oxide blast media may not be suitable for all types of pans. Lower pressures (40-60 PSI) and smaller, less aggressive media are recommended for aluminium pans to avoid damaging the surface. Additionally, steel shot media may not be suitable for aluminium or stainless steel pans as it can leave behind carbon steel residue that may interfere with the properties of the pan.

Try sandblasting

Sandblasting is an effective method to remove the non-stick coating from your pans. However, it is essential to understand the process and take the necessary precautions to ensure a safe and successful outcome. Here is a step-by-step guide to help you through the process:

Step 1: Prepare the Workspace

Before you begin sandblasting, it is crucial to set up a safe workspace. Sandblasting can create a lot of dust and debris, so it is recommended to perform this process outdoors or in a well-ventilated area. Ensure that you have adequate lighting and a stable workbench or surface to place your pan. Put on safety gear, including a respirator, safety goggles, and gloves, to protect yourself from the dust and debris generated during sandblasting.

Step 2: Choose the Right Abrasive Media

The choice of abrasive media is crucial for effective sandblasting. For removing non-stick coatings, fine-grained soft media is recommended. You can use sand, aluminium oxide, or other specialised media designed for removing coatings. Avoid using aggressive media that may damage the pan's surface.

Step 3: Set Up the Sandblaster

If you have access to a sandblaster, ensure that it is set up correctly. Follow the manufacturer's instructions for assembling and operating the equipment. If you don't have a sandblaster, you can attach a sandblaster kit to a standard air compressor. These kits are available at most hardware stores and can be an affordable option for occasional use.

Step 4: Secure the Pan

Place the pan on your workbench and secure it firmly to prevent it from moving during the sandblasting process. You can use clamps or a vice to hold the pan in place. Ensure that the area you are blasting is well-contained to minimise the spread of dust and debris.

Step 5: Start Sandblasting

With your safety gear on and the pan secured, you can begin sandblasting. Hold the sandblaster nozzle at a distance of 6 to 12 inches from the pan's surface and move it in a steady, controlled manner. Apply even pressure and work your way across the surface in a systematic pattern. Continue blasting until the non-stick coating is completely removed.

Step 6: Clean and Polish the Pan

Once you have removed the coating, use a soft brush or compressed air to remove any remaining dust and debris from the pan's surface. You may need to fine the surface with a polishing compound to restore its original finish. Wash the pan with mild soap and water to remove any residual abrasive media and polishing compound.

Step 7: Dispose of Waste Responsibly

After sandblasting, ensure that you dispose of the waste appropriately. Collect the used abrasive media and dust in a sealed container and dispose of it according to your local regulations. Do not pour the waste down the drain, as it can cause blockages and environmental harm.

By following these steps, you can effectively remove the non-stick coating from your pans using sandblasting. Remember to always prioritise safety and take the necessary precautions to protect yourself and your surroundings during the process.

Wash with soap and water

To get rid of the non-stick coating in a pan, you can try washing it with soap and water. Here's a detailed, step-by-step guide on how to do it effectively:

Step 1: Soak the Pan

Fill your sink with hot water and let the pan soak for about 10 to 15 minutes. This will help soften any burnt-on food or grease, making it easier to scrub away.

Step 2: Apply Dish Soap

After soaking, dump out the water and add some dish soap to the pan. You can also add a small amount of dish soap to a soft dish sponge or cloth. Avoid using abrasive tools like steel wool, scouring pads, or stiff scrubbing brushes, as these can damage the delicate coating on your pan.

Step 3: Scrub the Pan

Using the rough side of the sponge, gently scrub the burnt or coated areas of the pan. The dish soap will help break down any remaining oil, grease, or food particles. Scrub until you've removed as much of the non-stick coating as possible.

Step 4: Rinse and Dry

Once you're satisfied with the amount of coating removed, rinse the pan thoroughly with warm water to remove any soap residue. Dry the pan completely before moving on to the next step.

Step 5: Re-season the Pan (Optional)

If desired, you can re-season the pan to restore its non-stick properties. To do this, lightly rub cooking oil over the surface of the pan. Then, heat the pan on the stove over medium heat for two to three minutes. Finally, wipe out any excess oil with a paper towel and allow the pan to cool before storing.

It's important to note that washing with soap and water may not completely remove all of the non-stick coating. For heavily coated pans, you may need to repeat the process multiple times or try other methods like using vinegar and baking soda. Additionally, always exercise caution when handling abrasive tools and chemicals, and ensure proper ventilation when working with potentially toxic materials.

Use a mixture of vinegar, water, and baking soda

If your non-stick pan is visibly charred, a mixture of vinegar, water, and baking soda can help loosen and remove any black residue.

Firstly, create a slurry of vinegar, water, and baking soda directly in your non-stick pan. Pour enough water to cover the bottom of the pan, along with two tablespoons each of white vinegar and baking soda.

Next, bring the mixture to a boil and stir it to dissolve, using a silicone or wooden spoon. Continue stirring for five minutes to encourage any burnt residue to loosen.

After boiling, allow the mixture to cool completely before discarding the vinegar solution and rinsing the pan with warm water. You can then continue with the steps outlined in the first method, which involves washing the pan with soap and water.

If you've tried both methods and the burnt food or residue remains stuck to the surface of your pan, it may be time to replace it. Once the non-stick coating has started to break down, it will only continue to do so, making it easier for food to stick to the surface. In some cases, the non-stick coating may also begin to flake off during cooking.

Avoid high heat and vegetable oils

To avoid damaging the non-stick coating of your pan, it is important to avoid exposing it to high heat and certain types of oils. Here are some tips to help you maintain the non-stick coating:

Firstly, always use low to medium heat when cooking with non-stick pans. High heat can damage the coating and cause it to break down over time. It can also cause the release of toxic fumes, which can be harmful to your health. This is particularly true for older pans with Teflon coatings, which may contain PFOA (perfluorooctanoic acid) or PTFE (Polytetrafluoroethylene). These chemicals can create toxic fumes when heated to high temperatures, leading to a condition known as "polymer fume fever", characterised by breathing difficulties, fever, and a sore throat.

Secondly, avoid using vegetable oils or other types of oils with a low smoke point. Vegetable oils have a relatively low smoke point, which means they can start to break down and release smoke at lower temperatures. This can cause the non-stick coating to deteriorate and may also affect the taste of your food. Instead, opt for oils with a higher smoke point, such as avocado oil, peanut oil, or canola oil. These oils have a higher heat tolerance and are less likely to damage the non-stick coating.

In addition to avoiding high heat and vegetable oils, it is also important to use the proper utensils with your non-stick pans. Avoid using metal utensils that can scratch the surface of the pan. Wooden or silicone utensils are better alternatives as they won't damage the coating.

Another tip to maintain your non-stick pans is to avoid stacking them directly on top of each other. This can cause scratches and damage to the coating. Instead, use pan protectors or towels between each pan to prevent direct contact and reduce the risk of scratches.

Finally, proper cleaning and maintenance are crucial for preserving the non-stick coating. Avoid using abrasive scrubbers or steel wool, as these can scratch and damage the surface. Opt for soft sponges or cloths and mild dish soap when cleaning. It is also recommended to hand wash non-stick pans instead of placing them in the dishwasher, as the high temperatures and harsh detergents can be damaging.

Frequently asked questions