Morris Minor Owners Club

I have read in the forum recently about the usage of wire brushes for rust removal etc. in angles grinders. I just want to pass on waht I have learnt from my experiences

1 I preffer a non knotted brush, I find them too harsh.

2 A cup brush and a disk one both have there merits in different situations, I think I need both. I also find the disk type longer lasting and faster working.

3 You may have noticed when a brush is new it is "sharp" and will both work faster and sratch the surface (not good when you want to preserve the original surface treatment, not sure it is was phosphoric acid or some zinc solution). However the sharp bruch will cut off the deeper surface rust. To restore this new brush feel fine an old stone from a bench grinder, lay it on the floor and run your wire brush over it (whilst it is spinning in an angle grinder). You can also use this technique to tidy up a spoilt brush.

4 I use WD40, or similar to prevent rust during body work. You may find this makes it much easier to remove slight surface rust. I think it also helps prevent the surface from being scratched by the brush.


Tip 3 is the one I really wanted to share.


4

Can I add that such brushes in angle grinders can shed their wires so make sure protective gear (overalls, gloves, goggles etc) are used.

Paul Humphries

sii803 wrote:4 I use WD40, or similar to prevent rust during body work.

Note that WD40 is flammable. I'm not sure I would want to spray it on my car while doing something that generates hot sparks in the same area.

i use knot wheels..beacuse they do the job that is required,they do hurt if you get hit by one of them but you get used to it ....wd40 aint that flammable..but i still wouldnt use it on my bodywork....

I am unsure about applying oil to the surface, but it depends on what you are going to apply to the metal. If you are going to use any paint then its a bad idea, but if you intend to use a wax or underseal coating then it should be OK.