I don't know that I have any experience with water based urethanes, but my experience w. other varnishes, urethane and traditional, is that you didn't wait long enough between coats.
The uncured varnish from the earlier coats is trapped under successive layers of partially cured varnish. I knew some fellows that put multiple coats of urethane on table tops over a period of 10 - 14 days. That was back in the 1970's. The finish took 6 months to harden.
I just read that urethanes cure by exposure to moisture. I would have expected plain air and/or IR, and/or UV. My inclination would be to wipe a small portion of 1 stick w. some distilled water, and see if it firms up after a few days. If firm, might need some buffing to give a nice gloss.
The uncured varnish from the earlier coats is trapped under successive layers of partially cured varnish. I knew some fellows that put multiple coats of urethane on table tops over a period of 10 - 14 days. That was back in the 1970's. The finish took 6 months to harden.
I just read that urethanes cure by exposure to moisture. I would have expected plain air and/or IR, and/or UV. My inclination would be to wipe a small portion of 1 stick w. some distilled water, and see if it firms up after a few days. If firm, might need some buffing to give a nice gloss.
