The confusion is probably that "Bondo" can be several different products.

Bondo Fiberglass Resin is hard, tough stuff.

Bondo Body Filler is lightweight, easy to feather stuff.

If you walk into Autozone or Homedepot and ask for "Bondo", who knows what the SOB will hand you.....

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You can also just take the playfield in to the local paint store and as long as you have a ~dime size area of color, they can match it.

Buy the highest quality paint they have, because you will have to thin it to spray it.

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I do that all the time with cabs. Roll them in on a dolly, match the unfaded paint under the legs, rails or coindoor.

The store keeps the color matches under your name, so a year latter you can ask for "Vid's - SBM Blue" and they mix it right up.

Even a $12 quart is a deal if you figure how much money Createx paint is, and then how much time you have to fool around matching, drying, naphthaing....

I'd go to a real paint store, the drones on a work-release program at Homedepot can't spell their own names, let alone care if they match your paint or not.

After the computer analyzes your sample, it gives a score on how closely it matched the color. No one at HD will ever share that score with you, they just go ahead and mix your paint.

A paint store will show you that the color poorly matched (like Bally "hot" orange), rather than just mix it and send you on your way.

Put a tarp over that poor Honda.....

Get a roll of Painter's Plastic (the .31mill thin stuff house painters use over windows, not the thick plastic you walk on).

Staple it up, throw it away.

https://pinside.com/pinball/forum/topic/vids-guide-to-ultimate-playfield-restoration/page/18#post-1739707

You have come this far, why not lay down 2 more light coats and make it totally flat?