The purpose of an angled cut on your repair patch is to prevent a stress
riser. If cut square across the patch area would be very stiff but right at
the edge of the patch it would be the point of flexure. This would create a
point of cracking in the future as the frame is put into service. By having
an angle cut the point of change from rigid to flexible is spread out and
less likely to create a start for cracks.
I am not sure what you mean by wedging the new piece in but a close fit
is ideal. You don't have to weld all around. Short one inch stitches with
an inch between will allow the patch to flex a bit.
Are you repairing a cracked area or an area that is corroded?
Randy


"Smokeyone" wrote in message
om...
Could I ask advice please on the correct way to repair a steel vehicle
chassis. I understand the proper way for say a rectangle type repair
is to have the top part of the replacement plate sharter than the
bottom....sort of like this /---\

/-----\
sort of shape...is this correct please. I understand it makes a
stronger joint,
also if the correct way is to make a flush joint do you just wedge the
new piece in place or is there a better way before you start to make
the take welds.
Thanks very much

Smokeyone