Painting blue steel

[Jeff]

I have made a bead breaker and bike lifter from steel with a blue coating. I want to paint them, but should I remove the blue or just paint over it?

https://www.aulro.com/afvb/images/imported/2015/08/616.jpg (http://s1336.photobucket.com/user/Jeff_8/media/WP_20150809_003_zpsofnngmwc.jpg.html)

https://www.aulro.com/afvb/images/imported/2015/08/617.jpg (http://s1336.photobucket.com/user/Jeff_8/media/WP_20150809_001_zpsnoiw2pdm.jpg.html)

https://www.aulro.com/afvb/images/imported/2015/08/618.jpg (http://s1336.photobucket.com/user/Jeff_8/media/WP_20150730_002_zpsgkdlz15z.jpg.html)

Jeff

:rocket:

[roverrescue]

The blue is a primer.
Degrease and clean welds then paint away.
S

[JDNSW]

As roverrescue says. I would be inclined to put a coat of primer on the welds.

John

[clive22]

Everything they say.

It's important when coating grind away sharp edges then stripe coat them with a primer before applying the all over primer.
The paint withdraws from the edges leaving it very thin.
Corrosion very often start at the welds too due to changes in metal composition.

Clive

[Jeff]

Thanks for the replies everybody. I had a nice sunny day this morning, so got into it. I put the bits in the sun so they would not be too cold and wiped them with prepsol, then started spraying with black Killrust paint. Killrust says it doesn't need primer, so will do an extra coat over the welded bits.

Well I sprayed the upright and the lever and the spray can ran out of puff. There was plenty of paint in the can, but no propellant :( So I grabbed a tin of normal Killrust and a brush to finish it off and you guessed it, it went over cold and started to spit rain:eek: The bits are hanging on wires in the garage for now and I'll check on them tomorrow.

Jeff

:rocket:

[SouthOz]

Sit the spray can in some warm (not hot) water to give it some pressure.

I always preheat my spray cans before spraying. Turns out much better than cold can/paint.

Dave

[mick88]

Sit the spray can in some warm (not hot) water to give it some pressure.

I always preheat my spray cans before spraying. Turns out much better than cold can/paint.

Dave


Crushing the can a bit always works when you need to wring that last bit out when there is paint remaining but they have lost their pressure!


Cheers, Mick.

[bee utey]

Crushing the can a bit always works when you need to wring that last bit out when there is paint remaining but they have lost their pressure!


Cheers, Mick.
So does a shot of compressed air from a dust gun, just remove the spray head and inflate.

[Jeff]

I painted the bead breaker and lifter, and the paint is quite fragile and peels off easily. Is that a problem with Killrust, or should I have used a proper primer?

https://www.aulro.com/afvb/images/imported/2015/08/466.jpg (http://s1336.photobucket.com/user/Jeff_8/media/WP_20150818_002_zpsua25lv3d.jpg.html)

https://www.aulro.com/afvb/images/imported/2015/08/467.jpg (http://s1336.photobucket.com/user/Jeff_8/media/WP_20150802_003_zpsrjnlh11y.jpg.html)


Jeff

:rocket: