Therefore, the recommended shielding gas to use for short circuit stainless steel MIG welding is a tri-mix shielding gas, such as 90%He/7.5%Ar/2.5%CO2. The high thermal conductivity of helium helps provide a flatter weld bead and good fusion into the base plate.herefore, you do not want to use a completely inert shielding gas, such as 100% helium or 100% argon for stainless steel MIG welding. The arc characterisitcs would be poor.
These days, we use car horns to:    Alert other cars when you're coming around a blind corner  Alert pedestrians who are not concentrating on where they're  walking  Alert other drivers when they are about to make a driving fault  so they can avoid hitting you     And that's about it.
Driving in fog can be pretty scary, especially the first time you do it. Visibility is limited, so itâs very important that you know how and when to use your fog lights. In the UK you have to have at least one rear fog light, though many cars-especially more expensive models-come with front fog lights as well. Do use your fog lights if youâre driving in fog. Itâs not a legal requirement but it will help you stay safe by making it easier for other drivers to see you. Donât use your fog lights when visibility is good. Other drivers can easily be dazzled, especially at night.