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Both Stainless Steel Chromium Steel, Nickel Chromium Steel and Galvanised Coated Steels are designed to be a rust free finish to the material and as such they will resist any type of etch primer that is not extremely acidic, and hence hazardous to the user. There is almost nothing that an amateur can do to etch Stainless Steel and our recommendation is to avoid, wherever possible, the use of this material. If Stainless Steel has already been used, the only advise we can offer is the roughing up of the surface with grade paper, cleaning the surface with PQ17 and then applying the topcoat directly to the metal. Whilst this is not ideal it is the only way for the amateur. Galvanized Steel is a material that has been coated with a zinc coating to prevent rusting. Probably the most likely form of this that the amateur is likely to come into contact with is Zintec sheet. Like all types of galvanised materials zintec has been designed to resist rusting and by default it also resists acids, hence etch primers do not work on it.

Unlike Stainless Steels Galvanised Steels have a problem, in that the galvanised coat will start to break down if left outside in the garden. Commercial applications of galvanised steel apply a protective coat of paint to the metal by powder or dip coating. As neither powder or dip coating are generally available to the amateur, the only option with galvanised steels is to leave them in the garden for approximately 24 - 30 months thus starting the breakdown of the coating and allowing a two pack etch primer to get a hold. You can now apply the Etch Primer to the substrate, only the thinnest coat is required and a second coat is not necessary. Etch Primers only start to work after they start to dry. It is therefore beneficial to only use the thinnest coat possible. Once applied the Etch Primer needs to be left to dry, both to allow the etching process to work and to allow the evaporation of the solvents contained within the paint. All Etch Primers need to be left for a minimum of 24 hours at a temperature of 18 - 20 degrees Celsius to dry properly.

Whilst this is the minimum it is advisable to allow significantly longer before applying topcoats.

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More paint finishes are ruined by the application of paint over Etch Primer that is still drying than almost anything else. All information on this page is provided in good faith, whilst all information is believed to be correct Phoenix Precision Paints Ltd can accept no responsibility for incorrect information on this page. Home About Etch Primers. Model Pictures. What is an Etch Primer Etch Primer is a paint that is designed to physically bond itself to the substrate to which it is applied. In most cases a colour will be added to the Etch Primer so that it can be seen. Single Pack Etch Primers Single pack, as its name suggests is a one part Etch Primer where the activating acid is already combined with the paint. Currently Phoenix Precision Paints only produce a grey single pack etch primer. The disadvantage of 2 Pack Etch Primers is the fact that you have to mix the two parts together.

Single Pack Etch Primers

The advantages are numerous but include: the ability to use the same product on both ferrous and non ferrous metals, the ease of spraying and the fact that it can be brushed. Firstly put on a pair of rubber gloves, this is to ensure that you do not put fingerprints back onto the cleaned surface Degrease the surface to be primed with the strongest solvent available. Shake your can thoroughly. This is important as if you don't shake it enough the primer won't be mixed properly and you'll end up with an uneven coat. If in doubt, shake more than you expect; you can shake too little, but you can't shake too much.

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Hold the can cm away from your surface and spray, moving the can from side to side, overlapping slightly. It's a good idea to keep the same distance as this will help the primer apply evenly. Wait for the first coat to dry for about three minutes before repeating for a second coat. You may also want to do a third coat when the second coat dries if you think this is necessary. Wait 15 minutes for the primer to dry. Now, you can take the grit wetordry paper and sand once more with water. This will help the topcoat stick to the primer even better. Indasa Aerosol Etch Primer, Grey, ml. Farecla Finishing Cloth Pack of 3. Sealey Safety Goggles with Direct Ventilation. Concept Go Foam Aerosol ml. Concept Mini Water Spray Bottle ml. Our stores Discover our stores.

Wash primer

How to Use Etch Primer The Uses and Application of Spray-On Etch Primer Difficulty: Easy Etch Primer is a very versatile primer that is designed to be applied directly to bare metal and should be used when you want to build up and sand down then overcoat. Safety Anything in an aerosol can may do damage to your health, so you must be prepared before using spray-on etch primer. Step 1: Preparing Your Surface To prepare your surface, you need to clean it. Your surface should now be clean, dry and ready to be primed.