Hi Andy I had a boiler made for me by Swindon Boilers, and the bronze bushes are all SAE660. I must admit to being surprised at the time, because it is lead bearing and no doubt intended for bearings. I queried this with them, but they told me that it doesn't cause any problems with the soldering, and they use nothing else. I reckon that if it's good enough for Swindon, it's good enough for me. Regards Ron ----- Original Message ----- From: "AndyA" <AndyA@xxxxxxxx> To: <modeleng@xxxxxxxxxxxxx> Sent: Wednesday, May 04, 2005 10:50 PM Subject: [modeleng] Gun metal or phosphor bronze > 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? -- No virus found in this outgoing message. Checked by AVG Anti-Virus. Version: 7.0.308 / Virus Database: 266.11.6 - Release Date: 06/05/2005 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.