look, this is what my pid solder DON'T. I never change my Temperature setting 196.4 C, for small SMT and for big heat sunk tab. Small thing, take some thing like 20% of heat generated by pid controlled heating unit, my solder iron will have accuracy +/- 3 C. Big heat sunk and 15 A current copper wire, I just "inform my pid" by touching sensoring TC to a heat sunk, for 5 sec and when I saw temperature droping 10 C, I start to using and my solder iron knows high PWM value is needed and I just keep my iron touching big thing. In this situation, I find my pid iron is became a high Watt iron. With this setting, I using 30W iron is enough for both SMT and heat sunk. I believe if I using 100W, or even 300 W iron, I will get even better performance. Remember, my pid iron makes my soldering never reach 200C !! totally safe and promised quality!! I remember before, If I do repairing, I often peer off pcb where I am repairing. With my pid iron, it never happens! It is big different. I suggest every one, change to pid soldering iron. ----- Original Message ----- From: "William Chops Westfield" To: "Microcontroller discussion list - Public." Sent: Thursday, March 16, 2006 12:00 AM Subject: Re: [EE] Soldering iron questions - repost to correct tag (sorry) > On Mar 15, 2006, at 1:15 AM, Paul James E. wrote: > > > I change temperatures often in the course of a day. > > > Ok. Why? When should one use different temperatures in soldering? > Since I learned to solder back before easily settable temps were > available, I seem to have missed out on certain instructions. > > BillW > -- > http://www.piclist.com PIC/SX FAQ & list archive > View/change your membership options at > http://mailman.mit.edu/mailman/listinfo/piclist > __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist