Thicker mild-steel MIG beads need a shielding mix that holds a stable arc. Hobbyweld 15 is a popular rent-free choice for Cornwall garages tackling structural repairs, while pure argon suits TIG and specialised work.
Gas Shack stocks both so you can match the cylinder to the process — not guess on the day.
Shop Hobbyweld Rent-Free Cylinders
When to pick argon instead
Use Hobbyweld 15 for everyday thicker MIG on mild steel. Switch to Argon when you move into TIG, stainless or aluminium shielding.
Not sure which bottle fits? Contact Gas Shack or browse LPG gas bottles and order online.
