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topic 59553

Best way to prepare a security door for paint



March 6, 2014

Q. Hello,
I have a steel security door that I have built for my home that I am unsure of how to get the best possible long term protection from rust.

My issue is that I am going to be welding on a 3/32 perforated steel screen, but when I do there will be some very tight areas (upper left of pics) that I am fairly sure will be unable to be painted or powder-coated. I have decided to paint it, and have already purchased the paint.

steel security door   steel security door 2

If I pre-paint those areas, then weld the perforated screen on, the weld will obviously melt the paint and create a possible area to rust.

My question is this; is there a dipping process that could be done that will give good rust protection in the tight area's that I can't get paint on, and be suitable to accept paint? If there is, I will just weld it up and be done with it.

Thank you!

Brad Hendricks
Hobbyist/jack of all trades - Phoenix, Arizona


March 16, 2014

A. Brad,
I would spray the door. If you can't reach a spot on the door with a spray gun, then the water and elements aren't going to be able to reach it either.

Marc Banks
Blacksmith - Lenoir, North Carolina USA

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