T Thebeast Member Messages 84 Location England Oct 12, 2024 #1 Hi does anyone know what these are in this weld? Looks like blisters and if you get something like a sharp screwdriver and drive it in them it pops them. Guessing they are small air pockets? What causes them and are they any harm? Thank you
Hi does anyone know what these are in this weld? Looks like blisters and if you get something like a sharp screwdriver and drive it in them it pops them. Guessing they are small air pockets? What causes them and are they any harm? Thank you
Welderpaul Member Staff member Messages 14,654 Location UK Oct 12, 2024 #2 Silica, nothing to worry about
Rrunnach Member Messages 1,127 Location Scotland Oct 13, 2024 #3 As Paul said, or silicon islands, as I use to tell my students.
