mtt.tr
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- Essex/Suffolk border
Definitely epoxy, alkyd primers are good but definitely surpassed by epoxy
Yes the modern epoxy is brilliant.
Definitely epoxy, alkyd primers are good but definitely surpassed by epoxy
Yes the modern epoxy is brilliant.
what is the number of the jotun primer?
my local place stocks about 6 different ones under " epoxy primer"
Maybe they've changed the formulation, but the instruction on my tin say you should use white spirit as thinners if using a spray gun.i ended up going with the rustins "anti corrosion primer" from Toolstation.
£20 for 2.5l, thinned 2:1 with xylene.
Maybe they've changed the formulation, but the instruction on my tin say you should use white spirit as thinners if using a spray gun.
Edited to say.... yes it has changed! Xylene is the recommended thinner.
Maybe they've changed the formulation, but the instruction on my tin say you should use white spirit as thinners if using a spray gun.
Edited to say.... yes it has changed! Xylene is the recommended thinner.
2 : 1 is a lot of thinners for a single pack paint
I'm glad I live near a decent shot blasting company...
My standard tried and tested process for anything rusty:
Angle Grinder + Wire brush, needle scale or sandblast all the flakey rust off.
Coat it in phosphoric acid (active ingredient of jenolite, krust etc - but loads cheaper) and work it into all the pits.
Prime it in an epoxy primer of your choice (I've used Rustbuster 121 with good results, but I hear many good things about Jotun)
Finish with topcoat of your choice (I use a lot of 2K - you can brush it if surface finish isn't critical).
If the area is subject to a lot of abrading (wheel arches etc), a stone chip before the paint is a good idea.
I've done several restorations and used this process for the underbody with good results even after several years of use.
Never ever had a problem with the stuff,even on smooth steel,i wouldn't have recommended in the 1st place, 50% is way way to much 10% maxThats what i thought. But the instructions say "up to 50% thinners".
The only thing i can surmise is that the Rustins "own brand" thinners (at £8 for 500ml !) has driers in.
Either way, i won't be using it again for anything important.
It'll be ok for pouring down the inside of tube before i i seal the ends.
Once you've applied it, how long do you leave it - do you have to 'wash it off' after before applying primer?
Looking at buying some phosphoric acid as you recommend (restoring a Mini). Once you've applied it, how long do you leave it - do you have to 'wash it off' after before applying primer?