Originally Posted by
Fat Boy
Here's a couple questions.
1. Any reason for using paste flux instead of the in-gas flux?
These are actually two very different types of welding.
When using a paste flux in this type of welding, the paste is applied to both sides of the metal to be joined (think of sweat soldering copper water pipes) the filler material is wicked into the weld joint thru capillary action. This is why when you look at the pictures of the welded joints you only see a very thin line of the filler material.
When you use a inline fluxer, the only area cleaned by the flux is the area contacted by the flame. This allows for a very precise weld bead. It looks like a tig weld. This would be inappropriate for welding a lugged frame. If you want to weld a fillet welded frame, a inline fluxer would work great.