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Should i thin out oil based poly with mineral spirits
However, if you just use straight poly, it's . If you thin it with mineral spirits, it just becomes a wipe on poly? So you have to apply many coats, but this also reduces potential air bubbles. You can alternatively use lacquer thinner and this will dry even more thin the oil based poly at least 10% with mineral spirits before. It will level out pretty well if . Oct 5, If you are brushing it on, no you do not need to thin it. Your first coat or 2, brush it on with an even coat. However, you can go as far as half mineral spirits and half poly. Typically, when you are thinning out oil-based polyurethane or oil-based varnish, you will be working with mineral spirits. First of all, you need to think about ratios. The usual ratio is about 3 or 4 parts varnish to one part of the mineral spirits. First of all, you need to think about ratios. However, you can go as far as half mineral spirits and half poly. Typically, when you are thinning out oil-based polyurethane or oil-based varnish, you will be working with mineral spirits. The usual ratio is about 3 or 4 parts varnish to one part of the mineral spirits. View complete answer on rainer-daus.de . While mineral spirits are widely used to thin oil-based polyurethane, you should never use them to thin water-based polyurethane. Their "High. General Finishes says that thinning is not necessary because it is already thin but you can thin it with mineral spirits up to 10%.