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Re: Compass Fluid, what to use?
Baby Oil is generally mineral oil with added fragrance and other ingredients. If you want mineral oil, you buy plain "USP" pharmaceutical grade mineral oil at any pharmacy, at least here in the US.
Mineral spirits can be a blend of almost anything and when sold under that name, are best suited as paint brush cleaner only, because you don't know what the blend is. The primary and typical ingredient is naphtha, and several grades of naphtha are usually sold in any paint or hardware store. The cheap stuff leaves some residue, the better stuff is purer--and more expensive. Also sold in graphic art supply stores as "rubber cement thinner", and as "Ronsonol" and other brands of cigarette lighter fluid.
Ritchie can definitely ship "compass fluid", and under US law they have to make available an MSDS that also tells you just what the stuff is, more or less. If the fluid is classed as hazardous material (hazmat) it has to be shipped by ground, at a surcharge, but it still can be shipped.