As useful as the well nuts are I don't think they will work for me yet if you look at the photo you will see where the lip is and where I need it to be.
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\the strip of alloy is where I need the lip too be, So two options I think
1 cut off the lip and build a new one
2 build up the current lip with glass fibre past then cut it down to the required profile hopefully retaining the strength of the original lip? anyone got any better ideas?