A Portable Silver Soldering Hearth

[Jasonb]

I suggested in the other thread where Hockeypuck asked that black flux was the one to get. The two reasons are that it will stay active for longer or if the part is overheated and it also works with stainless steel. These are the same properties that the UK Tenacity No5 or HT5 flux have and I always suggest them for people getting into fabrication of model parts. It also saves having to buy the black stuff when you have already bought the white when you come to want to solder stainless for things like engine exhausts. Although I have the equivelent to the Harris white flux I seldom use it and tend to reach for the HT5

https://www.homemodelenginemachinist.com/threads/v-twin-maybe-v-4.34267/post-414567

 

[peterl95124]

I suggested in the other thread where Hockeypuck asked that black flux was the one to get. The two reasons are that it will stay active for longer or if the part is overheated and it also works with stainless steel. These are the same properties that the UK Tenacity No5 or HT5 flux have and I always suggest them for people getting into fabrication of model parts. It also saves having to buy the black stuff when you have already bought the white when you come to want to solder stainless for things like engine exhausts. Although I have the equivelent to the Harris white flux I seldom use it and tend to reach for the HT5

https://www.homemodelenginemachinist.com/threads/v-twin-maybe-v-4.34267/post-414567

I've done lots of silver-brazing of stainless, you do NOT need black flux for this, and the black stuff isn't transparent like the white stuff is so you can't see what's happening, its really only for brazing tungsten-carbide tipped tools when done by automation, if you think you need it you're probably doing something wrong.

 

[Jasonb]

Fair enough I did not see where it said white was used for stainless. Strange Harris mention stainless for the smaller sizes but not the large, Guess I looked at the large when I checked yesterday.

large
https://www.harrisproductsgroup.com/en/Products/sswf60

Small
https://www.harrisproductsgroup.com/en/Products/hpg-na-staysilvwhite