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Jewellers torch comparison, Little Torch & Sievert with needle nozzle

Please turn on “Closed Captions” (the, ‘CC’ button under the video.) In this video I show you a direct comparison between a Sievert jewellers torch, with a needle nozzle and a copy of the American Smith Little Torch. I’m running both torches at the same pressure, from the same propane gas regulator. I’m running the Little Torch from a 5 litre per minute oxygen concentrator. The torch typically uses around 1 to 2 litres a minute of oxygen depending on the nozzle size. The first demonstration is with a nozzle that I have modified, I filed the front face of the nozzle so as to get a 1mm diameter hole in the end. Because the end of the nozzle has been swaged down giving it a conical shape, as the end is filed shorter the internal bore gets bigger the more copper is removed. I could have drilled it to size but as I didn’t know what size I wanted, I thought that by slowly filing it down and trying it at different sizes would be best. Once I got the desired result, I burnished the inside of the hole with the plain end of a 1mm drill to remove any rough edges. (I don’t know how large one could make the hole in the nozzle before it became a problem.) Another benefit of the Little Torch run on propane is you don’t get any gas smuts when you light it as you do with acetylene and oxygen. Note at 7mins 50sec I say ‘The benefit of the little Torch is the overspill of heat’ that should of course be the ‘reduced overspill of heat.’ The small but powerful flame doesn’t spread as far with the small torch. It makes life easier for me as when I’m concentrating on a tricky joint I have been known to melt something with the overspill without realising it!! The Sievert torch is a good torch but if I could only have one torch, I would choose the Little torch with an oxygen concentrator as I can do everything with it, soldering, brazing, fusing, metal melting and enamelling even some small glass work.. By the way the Little Torch only cost £17.77 ($22 US) from Amazon in March 2024. I can’t remember how much the second-hand Oxcycon unit cost, but I’d buy another in a heartbeat!! See Greg Greenwoods ‘Pick soldering’ video here    • PICK SILVER SOLDERING   See Greg's ‘Torch comparison’ Video here    • SILVER SOLDERING SERIES PART 2. JEWEL...   See my video about resolving issues with the cheap copy of the Smith Little torch    • Cheap 'Little Torch' - No problem!!   Thanks for watching . . . Andy