I have used this before, but directions always confused me. The regular stuff applied by hand or brush says let dry 4 hours between coats.
The spray can stuff, says if you can't reapply within 1.5 hours, wait min of 72 hours and sand and reapply.
I wonder if the spray can stuff just won't adhere?
I think what it means is if you cant recoat within 1.5-2 hours you should wait 72 hrs. and sand to recoat.
I know all urathanes do not adhere well to each other. I bet the spray just wants it tacky so it will or wait til totally dray and sand to get it adhere.
I am doing my usual tonight. I will put 5 coats of spray spar on with 15 min in between each coat, wait three days, sand and do it over again.
Yes if you can't recoat in the alotted time you must wait. Your method is a good one.