Classic/Antique Car Repair: Brake question..., bleeder valve, david gardner

Question
Mr. Warrington:
Need to put a new master cylinder on a 1979 El Camino, and a lot of the websites I go to look for one say that it needs to be "bench bled".  What exactly does that mean?
I'm a fair jack-leg mechanic, and I know you have to be real careful not to get air in the brake lines when you disconnect them.  I also know you need to loosen the bleeder valve at the wheel and pump some brake fluid through the lines just to be sure.
Is "bench bleeding" something that needs special tools, or would be beyond my abilities?
Any info, suggestions greatly appreciated.
Warm regards,
David Gardner
davidg32@yahoo.com

Answer
Dave ;
 Hi - bench bleeding is just that , just put the new M/C in a vice with the cap off - fill it up and then use a dowell or rod to stick in the back of the M/C where the rod goes and  slowly push it in & out till it gets the fluid into the system of the new (dry) M/C  than with it full and cap on bleed it on the bench both front and rear , if it has them. all you are doing is getting the fluid into it and saveing a lot of time from doing it n the car.  ok / also you will have to bleed the  brakes on the car -you should. ,and check the fluid after each  time you pump and bleed - you do not want to get any air in the system as you will have to re-do it.and start the bleed from the r/r - l/r-r/f-l/f ..>>>......