If this has been asked, sorry, my searches did not pull anything up. Provide the link and I will read/research.
I am planning on sandblasting a few pieces along with grinding and sanding (the bulk, flat surfaces) to remove rust and paint. They were painted and now covered in rust. Once I am done removing the rust (and paint) and have the finished surface I want, how should I treat it?
Here is want I have found so far:
- When you flash metal (sand blasting, grinding etc), the metal is subject to flash rust.
- I could treat the metal just after ‘finishing’ it with a product to keep that from happening.
- I have tried to paint the projects just after grinding and something it works (no rust) and sometimes it does not (rust seen through the paint).
So, what I am doing wrong? What do I need to do (buy and how to treat)?
How to polish / finish the metal?
How smooth does it need to be?
This project will have me working on steel - not sure of the grade or type of steel. One is a tube piece and the other is rolled steel that is flat with two sides welding to the flat part (top with two rails).