If it's dry when painting, the paint will slowly get sucked up the ferrule. You're supposed to wet the brush with water before painting so the water is inside the ferrule already to keep paint from going up there instead.
The spinner is great for rollers, horrible on brushes, especially anything of quality, it is too hard on the bristles. The hand rolling technique is sufficient.
Dpecs92 t1_j6c0mi3 wrote
Reply to comment by DriftinFool in Question about paintbrush when painting samples by k0nabear
If it's dry when painting, the paint will slowly get sucked up the ferrule. You're supposed to wet the brush with water before painting so the water is inside the ferrule already to keep paint from going up there instead.
The spinner is great for rollers, horrible on brushes, especially anything of quality, it is too hard on the bristles. The hand rolling technique is sufficient.