I'm looking to bring a Comet playfield up to a playable level disregarding restoring the artwork.
The playfield has pretty much turned to chalk on the lower half and is bare wood in a few spots.
I've vacuumed it to remove old dust and loose paint.

My question is what should I do to bring this up to decent playing condition.
Is using a non abrasive cleaner like simple green the right way to start or would it be better to lose some more paint and get a better cleaning with an abrasive cleaner?
Are there any tips for waxing a playfield with bare wood spots? I'd like to make it as smooth as possible but is that even possible given there's a height difference between printed and bare spots.

Thanks in advance

I hadn't thought about the wax not liking the porous wood.
Would wax also make it tougher to restore later as it would be pulled into the wood?
Would the relatively uneven surface create any issues with mylar? I can picture it being tough to keep air out when laying it down.

It doesn't seem like there are any good options to maintain the ability to restore it in the future (not a main goal but would be nice) and still have it play well now.