At 10:50 PM 5/4/05 +0100, you wrote: >What should I use for boiler bushes? Gunmetal or Phosphor bronze and what grade? I have been told Phosphor bronze grade SA660 but as that is leaded and would it not cause problems when silver soldering? - Andy Andy, Are you in the U.S.? If so SAE660 is OK for bushes, there isn't enough lead content to inhibit soldering, but a phosphor bronze such as C510 or C521 would be better. Regards, Harry Wade Nashville Tennessee MODEL ENGINEERING DISCUSSION LIST. To UNSUBSCRIBE from this list, send a blank email to, modeleng-request@xxxxxxxxxxxxx with the word "unsubscribe" in the subject line.