How to paint aged wood trim that has been varnished

The easiest way to remove things is usually in the inverse order they were put in.

If you intend to put down new flooring, you must remove the tile anyway, so remove the tile first. I'll admit that the scariest thing to do might be the tear out. It forces you to accept that you are doing this thing, especially if you have never done something of this magnitude. It will make a mess of things for a wee bit.

I would suggest removing tile with a hammer and wide cold chisel. Break up at least a few tiles by hand. If you have a compressor available, a great tool here would be a flat air powered chisel. This tool would rapidly allow you to peel up the old tile. A bit noisy, but fast. If not, then the hammer and hand held chisel (don't use a wood chisel unless you have borrowed the wood chisel from someone you don't like) will do. Once a few tiles are up, you may find that a large ice scraper, used for breaking the ice from your sidewalk, will be useful to peel up the rest of the tile.

Once the tile has been removed, then remove the baseboard for later replacement.

Demolition can be the most fun part of a project. Try to keep the dust out of the remainder of the house, and use a dust mask.

Probably both temperature and thinning are an issue, since you are at the extremes for both (very high temperature, and no thinning at all), but there are a LOT of ways to get orange peel, so eliminating it can be a trial and error process.

It sounds to me like the solvent is evaporating before the paint can flow together on the cabinets. This is usually a result of some combination of:

• low air pressure or fan adjusted too wide
• holding gun too far from the surface of the work
• temperature is too hot
• too little thinner

If your gun is adjusted properly and your technique is good, then I'd thin and try to work earlier in the day before it gets too hot. Mineral spirits would be preferable over naptha, because naptha evaporates more quickly.