onenastyviper
Member
- Messages
- 17
Hi guys and gals,
I have a clarke 160tm welder running with a nice new shiny boc argoshield light y size bottle (rented today).
Yesterday, I went to a car breakers to try and find some scrap metal to practice on - I want to learn car-body repairs so figured on old car body panels:-)
I bought a bonnet from a mk3 mondeo (silver) yesterday.
Today, I cut a small section out and used one of those abrasive sponges for an angle grinder to take it all back to shiny metal - removing the paint from both sides.
Well, I started welding and noticed that on the reverse side, an ash-like substance forming and on a corner joint, it formed a fine almost cob-web like structure across the heat affected zone.
Could this be caused by galvanising?
How can I tell if a sheet is galvanised? Will it always have that large-grain effect on it?
Any help, thanks?
I have a clarke 160tm welder running with a nice new shiny boc argoshield light y size bottle (rented today).
Yesterday, I went to a car breakers to try and find some scrap metal to practice on - I want to learn car-body repairs so figured on old car body panels:-)
I bought a bonnet from a mk3 mondeo (silver) yesterday.
Today, I cut a small section out and used one of those abrasive sponges for an angle grinder to take it all back to shiny metal - removing the paint from both sides.
Well, I started welding and noticed that on the reverse side, an ash-like substance forming and on a corner joint, it formed a fine almost cob-web like structure across the heat affected zone.
Could this be caused by galvanising?
How can I tell if a sheet is galvanised? Will it always have that large-grain effect on it?
Any help, thanks?
