Thread: Mesh-Backed Sandpaper vs Normal Sandpaper

Use an angle grinder with a cupped wire brush... and safety goggles.

...and a mask. A full face shield is probably a good idea too

Originally Posted by rod1949

Use an angle grinder with a cupped wire brush... and safety goggles.

Thanks for the tip! I did a test run with a wire brush in a drill and found that the brush didn't last very long but I'm thinking that it was poor quality.

I think I'll give one of the tool places a call tomorrow and ask what they recommend.

Cheers,

Chris

mask the area off and use a compressor and sand blast it off.

for reference the mesh stuff just helps with dust extraction not cutting ability

Use this with angle grinder

Access Denied

The purple 3M one cuts SUPER fast and last a long time. I have tried other ceramic grained versions of these - eg the smith and arrow - and it was no way near as efficient. Wasn't worth the cost saving. In my experience much faster than wire brushes

I would imagine using a meshed sand paper it will destroy the paper. mesh papers are a bit fragile

Chris

The risk with all the above methods is that if you inadvertently touch the glass with the sanding pad or the wire brush then you will irreversibly scratch the glass. This is another way of saying that my hands are not steady enough to use those methods.

Personally, I would try a chemical strip first - a gel type paint stripper - followed by a light sand with a detail sander. It is really important that you get the primer coat on quickly after the final sand, before the next generation of rust starts.

The other option is to use a tungsten scraper. This should be quite fast on the flat areas, but a little fiddly on the edges. Tungsten is harder than glass so you would have to be really careful not to scratch the glass.

Originally Posted by qwertyu

Use this with angle grinder

Access Denied

The purple 3M one cuts SUPER fast and last a long time. I have tried other ceramic grained versions of these - eg the smith and arrow - and it was no way near as efficient. Wasn't worth the cost saving. In my experience much faster than wire brushes

I would imagine using a meshed sand paper it will destroy the paper. mesh papers are a bit fragile

Many thanks! Never seen these but they look like exactly what I'm after.

Cheers!

Originally Posted by GraemeCook

Chris

The risk with all the above methods is that if you inadvertently touch the glass with the sanding pad or the wire brush then you will irreversibly scratch the glass. This is another way of saying that my hands are not steady enough to use those methods.

Personally, I would try a chemical strip first - a gel type paint stripper - followed by a light sand with a detail sander. It is really important that you get the primer coat on quickly after the final sand, before the next generation of rust starts.

I'm going to remove the glass as the rust is in behind it.

Originally Posted by cpsmusic

I'm going to remove the glass as the rust is in behind it.

Well, in that case, you can add a heat gun to your list of options.

IMG_3967.jpgIMG_3966.jpgIMG_3965.jpg

Originally Posted by qwertyu

Use this with angle grinder

Access Denied

The purple 3M one cuts SUPER fast and last a long time. I have tried other ceramic grained versions of these - eg the smith and arrow - and it was no way near as efficient. Wasn't worth the cost saving. In my experience much faster than wire brushes

I would imagine using a meshed sand paper it will destroy the paper. mesh papers are a bit fragile

Any idea what the difference is between the purple one and the green one?

I dont, I would assume the green would be less abrasive. Do you have a link?

Originally Posted by qwertyu

I dont, I would assume the green would be less abrasive. Do you have a link?

I think that the green ones have aluminium oxide abrasive whereas the purple ones have silicon carbide.

Originally Posted by qwertyu

Use this with angle grinder

Access Denied

The purple 3M one cuts SUPER fast and last a long time. I have tried other ceramic grained versions of these - eg the smith and arrow - and it was no way near as efficient. Wasn't worth the cost saving. In my experience much faster than wire brushes

I would imagine using a meshed sand paper it will destroy the paper. mesh papers are a bit fragile

If I get a few of the 3M Clean & Strip discs, any recommendations as to the size - they make a million different ones and they seem to be hard to get so I'll have to order them

Also, I don't own a grinder so I'm planning on getting a small one for the job - probably a BOSCH 750W 100mm Angle Grinder GWS750100. If I get one of these it will limit the disc size to 100mm (?) - any problem with that?