Agree that's how I do it.You can blow the piston out using compressed air too, if you have it.
Tony.
Caliper is off. Piston is well and truly seized in. Pulled the seal off but not quite enough angle to hit the piston indent ring with screwdriver and hammer to free up.
If it's that tight, and you don't have compressed air you may need to re attach the hose and pump the piston out.
Tony.