Refinishing table - Polyurethane Flaking Off
Hi everybody. I'm working on a round oak (veneer) table that I got used for $20 with chairs for our kitchen. We looked at buying new and I talked the wife into letting me fix up a cheap table so here we are. I've sanded the old finish off, used Varithane wood conditioner (probably bad idea), stained with Minwax oil based and could not get it dark enough, cleaned with Mineral Spirits and sanded again (ended with 150 grit going with grain) to start fresh, stained again with Minwax oil based stain... It was still too light so I read online that I could add oil based stain to oil based polyurethane to darken it further. So, about a week after staining, I used an HVLP sprayer to apply Minwax Wiping Polyurethane mixed with maybe 1/4 Minwax oil based stain. I did 3 coats and it looked very good at the time but a few days later my 18 month old daughter was doing what kids do and she ended up scraping up some of the tinted finish in a couple of spots. I'm able to scratch more of it off with my fingernail pretty easily so I don't think it has adhered to the wood very well. The table had been in my garage so it was a bit on the warm and humid side but not horrible here in Nebraska the past week. Any ideas what I've done wrong? Or is it just going to take longer than a few days for the finish to adhere and harden? The only thing I can think of is that I did not wait a full 2 hours between coats. Since I was spraying it on fairly thin I didn't see a reason to wait very long. Do I try to touch it up or start over again? Thanks in advance!!