Eventually managed to find the time to start the restoration of my
rusty old Bamford EG1.
As I was stripping off many years of "crud" and old flaky paint I
noticed that the casting had been filled with some sort of filler,
dark in colour.
This presumably was done during manufacture of engine castings.
There is now quite a large step in the casting where the filler has
fallen out, and now shows quite a large casting defect.
Before I just cover it in P38! I was wondering if there is a correct
material to fill the holes with, or would P38 filler work OK?
Clean, clean clean that surface - chisel out any bits that are insecure,
then build up layers of really good quality body filler. The better stuff
will not object to getting hot & clod but cheap stuff may crack & drop off.
If you are an authenticity nut, set to with cellulose filler. ;o))