Keel Continued - Butt Joints

Over the last few days I have cut out the remaining pieces for the keel sides and bottom.  I have joined them using butt blocks.  I have pre-drilled and countersunk and will be using silicone-bronze fasteners to attach the blocks.  The fasteners will not be removed.  I plan on using silicone-bronze fasteners for clamping purposes throughout the build and will also be leaving these in.  It sounds as though silicone-bronze is the standard used by professional and amateur boat builders.  I opted to use these fasteners also, considering the nominal increase in overall cost. Included are a few pictures of the keel bottom and sides, dry fit together.