Hi I am new to this and could do with some advice.

I am just finishing my MDF plug,  I have coated multiple times in pattern coat primer and sanded to P600 all over and really happy with the shape.  The problem I have and keep having is that I break through to expose  the MDF or filler in really small areas.

I am going to spray on the Pattern Coat Hi Gloss Finish so would this be ok to cover these small areas before making my mould or should I start again with the primer?

I have read other topics about this and i do know that you cannot seal an entire MDF plug with the high gloss but I wandered if I would get away with small area.  I was going to Spray the High Gloss then finish with P1200- 1500 then polish.

Thanks in advance 

If you are perfectly happy with the shape, then you can go over with high gloss and it should seal the surface no problem as long as the spots of MDF aren't too porous. Worst case you might have to do a second coat.

In future, what helps is to pigment each layer of Pattern-Coat Primer so that when you sand through to a layer below, you can clearly see that you are doing it and adjust your sanding technique accordingly to avoid breaking through to the substrate.


Warren Penalver
Easy Composites / Carbon Mods - Technical Support Assistant

I should have used Pigment.  I will do next time.

Ill give it a go and see how it finished over the MDF.

 Thanks Warren