what are you on about? I hadn't suggested anyone try it. I said I have done it many times on other cars succesfully... and I stated I haven't done the brakes on my Leon? Its a very safe and reliable method of returning the piston into the caliper..... on cars with normal pistons ( as I said I haven't done the Leon so don't know what the pistons are like) I'm intreged as to why you think its a bad idea, or how it would cause damage or cost anyone money? Please don't reply in future if you haven't read and understood the post
Okay, or please do not suggest inappropriate methods on cars that you don't know exactly how the rear callipers work!
Remember some people on these forums are doing this job for the first time and could easily consider any advice given as being correct - and that was why I was pointing out the error of handing out loose advise like that.
Edit:- for your and other's information, the rear pistons on these cars, while having a seal and being able to be pushed out using the hydraulic fluid pressure, also have a rough thread to allow the cable operated handbrake to drive them out when the handbrake is applied. This system is auto adjusting so it increases the projection of the piston to take up pad/disc wear and still keep the handbrake working efficiently, so with time the piston's "static" position will move out due to this rough screw thread auto adjustment, so when replacing the pads, if you use a normal piston/calliper spreader, G clamp etc you will initially press the piston back in, but will quickly end up forcing/compressing the rough screw thread mechanism - and only bad things happen when you do that, these pistons need rotating to "zero" the rough screw thread adjustment to get the pistons fully retracted.