Post by thread:[EE]: Old solder paste

I have a syringe of old dried out solder paste. Is there a way to reconstitute it? Maybe I could drip a solvent into it, but-- What solvent do I use and how do I know when I have added enough solvent? -- Rich -- http://www.piclist.com hint: PICList Posts must start with ONE topic: [PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads

> I have a syringe of old dried out solder paste. Is there a way to > reconstitute it? > Maybe I could drip a solvent into it, but-- What solvent do I use and > how do I know when I have added enough solvent? We used to do this many years ago. I remember that the bottle of stuff we used to thin the paste with was labelled "Pine Oil". What that is or where you get it from, I have no idea. We mixed it to a consistency that made it easy to apply with a length of wire for soldering QFP packages with an iron. I wouldn't try dispensing and/or reflowing reconstituted paste. A small variation in viscosity has a large effect in those processes. I guess it depends how desperate you are to save $10. Steve. ====================================================== Steve Baldwin Electronic Product Design TLA Microsystems Ltd Microcontroller Specialists PO Box 15-680, New Lynn http://www.tla.co.nz Auckland, New Zealand ph +64 9 820-2221 email: spam_OUTstevebTakeThisOuTtla.co.nz fax +64 9 820-1929 ====================================================== -- http://www.piclist.com hint: PICList Posts must start with ONE topic: [PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads