jedibiker Posted November 11, 2020 Share Posted November 11, 2020 Hey all.I recently stripped my grab rail back to Ali as it was shitty paint and metal looks good. (im sure you suggested it)But its shiny til touched, then grubby. So, do i need to clear coat it or use a different product. Will clear stick to bare metal. cheers Quote Link to comment Share on other sites More sharing options...
husoi Posted November 11, 2020 Share Posted November 11, 2020 What on earth is Ali??? Quote Link to comment Share on other sites More sharing options...
jedibiker Posted November 11, 2020 Author Share Posted November 11, 2020 its what us yorkshire folk call Aluminium but you knew what i meant Quote Link to comment Share on other sites More sharing options...
husoi Posted November 11, 2020 Share Posted November 11, 2020 Well. Al is the element symbol Ali could also mean Aliexpress or 1000 other names Hopefully you didn't remove the anodisation coating that prevents aluminium from corroding.Clear coat will adhere to bare metal but you should give it a pass of 400 grit (or lower) sandpaper to help with adherence because there is no chemical bonding between metal and varnish (clear). Quote Link to comment Share on other sites More sharing options...
jedibiker Posted November 11, 2020 Author Share Posted November 11, 2020 Well. Al is the element symbol Ali could also mean Aliexpress or 1000 other names Hopefully you didn't remove the anodisation coating that prevents aluminium from corroding.Clear coat will adhere to bare metal but you should give it a pass of 400 grit (or lower) sandpaper to help with adherence because there is no chemical bonding between metal and varnish (clear). But grabrails are only made of steel or Aluminium? or so i thought.The metal was wire wooled, sanded, polished so no doubt ive stripped it right down.. lol Quote Link to comment Share on other sites More sharing options...
husoi Posted November 11, 2020 Share Posted November 11, 2020 If Steel then you really want to have proper rust protection. clear coat is a thin layer that will only look shiny and will do buggerall to prevent rust.Al on the other hand still does corrode by reaction to acid and alkaline solutions (the white powder we see on Al mostly near the sea) so it will also need some protection before the clear coating Quote Link to comment Share on other sites More sharing options...
Six30 Posted November 11, 2020 Share Posted November 11, 2020 lacquer it with aerosol , light coats , let each coat dry first Quote Link to comment Share on other sites More sharing options...
raesewell Posted November 11, 2020 Share Posted November 11, 2020 400 grit is way to coarse 800 as a minimum. Quote Link to comment Share on other sites More sharing options...
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