I fancied having a go at something else today, so, I decided to make some new side air vents.
Fortunately, the ones that came with the boat (wreck) were useable for taking a casting from, which I did in plaster of paris. They came out just fine.
Next, had a look at some peg board for the surface plate. Once recovered from the shock of the price for a bit of mdf covered in holes, I went to a diy store and bought an offcut of mdf for 10p and set to with my drill.
Next, a box was built for the holey mdf to sit on, with a tube to tape the hoover to underneath, and a frame to support the plastic sheet was knocked up.
The first couple of attempts weren't so good, but I soon got the hang of it and am pleased with the results.
Ian