I want to paint my calipers and want to take them off the car to do so. If I clamp the brake line then remove the caliper, will I need to bleed the system when I put the calipers back on? If so how do I do it? Thanks a lot

 

Yes. You will get air in the system. Mask them off well but leave them attached. Or, plan on bleeding. Time to flush the brake lines anyways? (Not that I have ever done it....)