Hi! 

Can I fixing rim braking surface when it has on surface lot of pinholes. I want this pinholes priming but this area realy active by the brake pads. 
Actualiy the surface it is keep wearing and heating when contacts the brake pads. The tempersature can be realy high up 150° but this is only just extreme situation
Can I fix this any epoxy resin? How much it can be wear-proof and friction.
Are there any solution this problem or just leave it out. 


Thanks

I will no doubt be corrected if wrong :-) but I think that you have started with the wrong cloth. An Aramid cloth would be better suited for this purpose as it is better at resisting abrasion.

Sorry Steve

First, I really guess this is a commercial rim.
aramid is more resistant to abrasion, but gets a little felt-like, wich also varies with the fibre orientation, wich is a simple no go for braking surfaces.

As the pinholes are non structural you should get away with a basic epoxy. But you should really question yourself, if the rim will look nicer afterwards, after sanding of all the little resin bumps. this needs a good amount of practice to get it right. And I guess you are not planning to unspoke the rim or clear/flowcoating it? So it might very well be that the rim looks less professional finished after your (very time consuming) work