Well, ref above, sonic knife or just buy a set of cheap wood butchers chisels they work a treat with a hammer, real quick..
ok , plate making

try use same gauge as oe for obviouse reasons
on this side make the lower lip first and offer up behind outrigger and mark, its the easiest way to get the lip in the correct place and angle

holes drilled for spotting through to inner sill lipo
on the other side its a little trickier to get right and as your using 2mm+ steel you need to get the folds right first time
i clamp a straightedge to the inside to guide stuff

i cut it a bit short at the rear so added a bit

then offer it up

this is a genuine inner sill to show how much/little the jp bracket is welded to the sill itself

and

we now have this kit of parts

first though i quickly weld the 2 skins together under here

then light sand back

which gives me a very solid base to add the jp supprt and the jp bracket

lots of meat around the semi circle which i now can sand back to the desired shape without having to worry if there is enough metal in there

next the jp bracket fits in place and is clamped up

then wind the mig up a notch

next i weld the inner part in, i gas to the chassis leg as i prefer it but thats just my preference and is neither better nor worse

next add a couple of good little runs to the inside as you have good access

then i weld the front part on and spot through to the inner sill, on the left i point to the 2 marks showing the penetration of the weld on the jp bracket to chassis leg

shown here

you really dont need any more as its only support as the bulk load is transmitted up the inner B post from the crescent upwards
weld thru on this side

and here product

it will all be further sealed and coated
just prior to the paint i have evened up the tapered fold to match

same on rear part of leg

so that about conclude a front jp, the outer B post skin is a mere formality and pretty much cosmetic really,no special tools just welder,angle grinder a vice and tin snips as such, also i don't use an auto helmet on this work , too big,get in the way etc just a simple hand held inspection shield but with a gold coated filter lens so very very nice to view through.

sorry one or two of the picks aren't in great focus but using phone
mm
