From: scientist77017@gmail.com   
      
   On Thursday, June 6, 2019 at 8:11:24 PM UTC-5, S Deyoreo wrote:   
   > On Wednesday, June 5, 2019 at 11:03:49 AM UTC-4, AK wrote:   
   > > When I changed my tip on my Chinese copy of a Hakko wannabe, I saw a small   
   amount of black powdery residue that came out. I have used the soldering   
   around 50 times. Is that part of a carbon rod?   
   > >   
   > > Thanks,   
   > >           Andy   
   >   
   > Clean it with one of those "brillo pad" things for soldering irons. I often   
   forget and leave mine on overnight. Looks horrible the next day, but the   
   scrubbibg things cleans it right up.   
      
   Thanks.   
      
   Andy   
      
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