Good Professional Paint Strippers

This is kind of DIY just not home DIY.

I have recently started reconditioning old bikes. The first couple of frames had decent paint work that I was able to touch up. I had another one dip stripped. The current frame I have is an old aluminium frame that needed stripping. One coat lacquer, one paint and one base layer from what I can see. I tried Nitromores on it but with little effect. Has anyone got any advice on good professional strippers that would out-perform Nitromores on aluminium and steel?

Thanks in advance,

Mike

Have you tried cellulose, many are painted with cellulose based paint.

Shot/bead/water blast...........