Quickest way to remove light rust

[Joe 90]

Whats the quickest way to remove light rust off box section before painting.
It has very little on it but quite a bit to do.
I dont need a good finish. Just the rust off before a put red oxide on it.

 

[slim_boy_fat]

Flap disc in an angry grinder?

 

[Barking Mat]

Or an orbital or belt sander.

 

[Paul.]

Wire cup brush either on an angle grinder (check the rpm though) or get one with a spindle and use it in a drill.

 

[steveo3002]

id go with a flap disc of a suitable grade , wire wheels tend to polish the surface and your paint might not stick that great vs a sanded finish

 

[Ross365]

id go with a flap disc of a suitable grade , wire wheels tend to polish the surface and your paint might not stick that great vs a sanded finish

That's an interesting point. In recent times, I've been going up a learning curve with the grit blaster I bought about a year ago. Now, many would say that a blasted surface is the best surface for paint. I've been using re-cycled glass as the media, and maybe getting the gun too close to the work piece. When I spray painted some blasted parts, I'd get these odd spots where the paint did not take and I realised the spots were places where the glass had embedded in the metal. So I decided to eliminate the problem by using a wire brush on a grinder to remove any embedded bits after the blasting. The extent to which the high-speed brush polished the blasted surface was quite a surprise - very visible!

 

[Alan Reynolds]

I sharpen my wire brushes on the grinder to perk up the tips of the wires. Otherwise they just polish.

 

[Barking Mat]

I sharpen my wire brushes on the grinder to perk up the tips of the wires. Otherwise they just polish.

Never thought, or heard of that.

 

[optima21]

if you're using a wire brush in a drill, change the direction of rotation, that keeps the wires sharp

 

[Joe 90]

Wire cup brush either on an angle grinder (check the rpm though) or get one with a spindle and use it in a drill.

I haven't a clue what the rpm is but what can be wrong with it? Can it be too fast?

 

[Ross365]

A wire brush in a drill (typically 3,000rpm) is much less effective than a brush on a grinder (typically 11,000rpm), but grinders aren't reversible. I think the grinders are much more than 3 or 4 times effective than the drill. It's like performance goes with speed squared?

 

[Joe 90]

id go with a flap disc of a suitable grade , wire wheels tend to polish the surface and your paint might not stick that great vs a sanded finish

I've normally 40 grit for welds. What grit is best for cleaning rust?

 

[Gragson]

if you're using a wire brush in a drill, change the direction of rotation, that keeps the wires sharp

Which got me wondering, is there a commercially available reversible angle grinder with all the perils that might ensue.
Not to derail OP's thread, might start a new one. Just curious

 

[ronan]

Bought one of these plastic wheels in lidl for giggles. Works well for removing paint and rust.

 

[brightspark]

Bought one of these plastic wheels in lidl for giggles. Works well for removing paint and rust.


View attachment 310227

they dont last long mind

 

[ronan]

they dont last long mind

True.

 

[123hotchef]

even worn flap discs polish and the paint dont stick!

 

[brightspark]

blast with kiln dried sand

 

[123hotchef]

blast with kiln dried sand

is that good enough? if so i am off out to get some for my bumper

 

[123hotchef]

blast with kiln dried sand