Documentation on Day 4 Spray build:   1.  Using a drill  in a mini-lathe setup, I gently sanded the taper into the mast.  Comparing with the 1:1 scale  on the plans, it looks to be in the range.     2.  Starting the planking process, I am using the method seen in many other builds on this forum: soaking planks and bending using modified binder clips.  I let them dry to the correct shape, and then apply glue before permanently affixing.    Note: I se