I am now sandpapering the stow hatches below the bed. In a few places there is a inside radius. For that I have winded sandpaper around a stick. I use tejp with adhesive on both sides. Winding it 45degrees to the axis. To calculate the with of the sandpaper strip I came upp with the following formula
pi times diameter divided by the square root of two
The diameter of my stick is 15 mm hence the with of the strip 33 mm
The lenght of the strip is lenght of strip times the square root of two
A composite boatbulder often do windings to create or reinforce spars or cover with leather for example so it has general
Below a pictureof me using sthe sandpaper stick
To be continued…
Regards Yrvind