Join Date: Apr 2009
Thanked 0 Times in 0 Posts
Rep Power: 8
Good call on the 1:12 grinding of the existing material.
As you are building up the replacement layers start with narrow strip at the bottom and make the succedding layers progressivly larger so each layer is bonded along the edge to the existing material. If you start with a full width strip first you would be depending on the bond of that layer to hold all the others in place.