Jim, Pat, Terry; Silicone, despite references to the contrary, can be dissolved/suspended and carried away by many different liquids laquer thinner, naptha and mineral spirits being among those liquids.............the problem comes from the tenacity of silicone in invading the cellular structure of wood...but this very property also makes it very useful in paint, adhesives and "lubricants'. Our 'finishing' problems with silicone comes from this tenacity. It really can't be sanded out because the silicone is just driven further into the wood cells/grain by the sanding operation itself....but sanding will, if done lightly and with constantly refreshed sandpaper, 'reduce' the problem of fisheye.............It will not however eliminate it altogether. "Fish Eye Eliminator" 'is' silicone and spraying a coat of material laced with even a small amount of 'FEE' means that all subsequent coats should be likewise laced or the fish eye problem is exacerbated and not solved. The problem of "heat bubbles" is a different thingee from the "pinholes" as originally asked about. "heat bubbles" come from a fresh coat of material being placed around a source of heat, such as ole Sol. :-) "heat bubbles come from the underlying materials giving off gases of different sorts when heated. If you will notice "heat bubbles" only happen directly over grain and never over the more solid portion of the wood surface. The heat cause a film to form over the surface of the material, such as laquer, and does not allow the gasses formed to migrate through the material to be relased to the atmosphere as normally happens. ergo "bubbles" :-( "Pinholing" happens everywhere over the wood surface, is usually much smaller and is not as deep, being only in the last sprayed coat, as "heat bubbles", which normally go all the way to the wood surface. Just some thoughts. Jim Bryant (FL)
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