It seems this is my first visit since July 2006, so it's good to see you are all still here!! That doesn't mean I'm so good I don't need advice, rather that I'm an infrequent welder.
I've searched on 'Land Rover Chassis' but didn't find the exact Answer, so ...
Having cut out the rust from the side of a dumb iron, my intention is to fill the hole, rather than patch over it. You can see from the picture that I have some tidying up to do to get straight sides (and to clean the edges back to shiny metal), but my question relates to the size of the plate.
Should I aim for the fill plate to touch the edges of the hole, or aim for a 1mm gap all round?
Being the side of the dumb iron, the welding will be all 'vertical', either vertical horizontal or vertical vertical.
Should I weld the vertical vertical seams upwards or downwards?
Both the chassis and the fill plate are 2mm thick.
Just to confirm, most of the chassis is in good condition, it's just that in 4 places a modification created a steel on steel overlap, with a 1/8" gap. With 40 years of muck and damp the rust had penetrated both the chassis and the cover plate.
The welder is a BOC Autolynx 100, an old commercial machine. Weld gas is Argoshield, and the welding will be done outside, but in the sheltered conditions of the wheelarch.
There are a total of 4 areas like this, but this is the first to be exposed.
Thanks for your advice.
I've searched on 'Land Rover Chassis' but didn't find the exact Answer, so ...
Having cut out the rust from the side of a dumb iron, my intention is to fill the hole, rather than patch over it. You can see from the picture that I have some tidying up to do to get straight sides (and to clean the edges back to shiny metal), but my question relates to the size of the plate.
Should I aim for the fill plate to touch the edges of the hole, or aim for a 1mm gap all round?
Being the side of the dumb iron, the welding will be all 'vertical', either vertical horizontal or vertical vertical.
Should I weld the vertical vertical seams upwards or downwards?
Both the chassis and the fill plate are 2mm thick.
Just to confirm, most of the chassis is in good condition, it's just that in 4 places a modification created a steel on steel overlap, with a 1/8" gap. With 40 years of muck and damp the rust had penetrated both the chassis and the cover plate.
The welder is a BOC Autolynx 100, an old commercial machine. Weld gas is Argoshield, and the welding will be done outside, but in the sheltered conditions of the wheelarch.
There are a total of 4 areas like this, but this is the first to be exposed.
Thanks for your advice.