Varnish and silicone fisheyes

[lw395]

It is well known that silicone polishes are a menace when repainting, I believe they cause 'fisheye' effects where the paint is repelled around a tiny feature that has trapped some silicone.
I'm re-varnishing a table using 1 pot polyurethane varnish, and this effect is rampant.
The first very thin coat (50% white spirit) looked normal.
The second coat showed the fisheye effect.
I sanded it, washed it over with white spirit and then with IPA (iso propyl alcohol, not beer!), then put a third coat on, thinned about 10% white spirit.
Same effect.
The wood is oak veneer with a quite open grain.
Any suggestions welcome!

Thanks in advance.

 

[VO5]

A ball of cloth soaked in boiling water is said to remove dents from wood.
Perhaps a similar treatment might lift the silicone out of the grain too ?
Is any member a furniture restorer by the way ?

 

[fergie_mac66]

antisilicon additive

you can get some drops from a serious paint polish supplies place eye drop size bottle

http://www.smartrepairproducts.co.uk/Others/ANTISILICONE-DROPS/prod_17.html

usually mix a few drops in with thinners ... they last ages years !

edit : i do restoration at times note v hard to get rid of silicon! even hard sanding just spreads it

 

[fergie_mac66]

french polishing techniques

if you are skilled you can get rid of the effect by using french polishing techniques in the v early stages of polish paint build up