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Default Wet sanding polyurethane b/t coats w/ mineral spirits lub

I have read that this is an effective technique. More specifically, the
book said to use the type of thinner/cleaner for the finish you are sanding
as the lubricant for waterproof (Silicone carbide) sandpaper. I am not sure
that I can bring myself to do it without being re-assured.

What would be the technique to do this. Do you need to rinse it off? Would
you rinse that with straight thinner, or water, or a dry rag, or any
prescribed order of any or all of the above? Does it require a wipable
surface (e.g. tabletop) to squeegee off?

Assuming the following (another reason) were true, is this safe?

Assuming the following (another reason) weren't true, is this safe?


I think I just thought of another reason why not to. I am doing drawers.
This may trap slurry, swarf, whatever you call it, into tight areas you
can't scour, squeegee, gravity won't work, etc.. This trapped thinner may be
harmful over time, regardless of the other answers.

BTW, all the drawers now have an "air tight seal" around all meeting corners
now that the bottom and sides are poly'd to one another after the first
coat.
Also, I have and will be using a tack rag to clean it. I foresee spotlessly
clean corners regardless in my near future. Recommendations?
I'm using Minwax Spar Satin Poly.
I am going to be sanding with 220 (Silicone carbide) sandpaper anyways.
Just wondering if MS as lubrication is safe, and now, in this drawer
situation.



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