ooof! What have I gotten myself into??

Submitted to Community Café

This is the results of 2 HOURS of work with abrasive paint remover wheels on the frame of my mountain bike project. Paint remover didn't even break the gloss, let alone soften the paint. I'm seriously considering taking it somewhere to be sandblasted. I'm beginning to think it's some kind of plastic coating and not a paint at all. Maybe a powder coat that was baked on?
Anyone have any suggestions?