The Decks

In the last post I had rough cut the white beech deck strips to length. Over the last 10 days I have completed the decking, at least for the time being! A series of photos shows the steps in the process.

The strips were trimmed to fit lengthwise and positioned using 4 mm thick plywood spacers. When all looked OK the strips were taken up, coated with epoxy and laid down in a bed of thickened epoxy. This white beech has an oily or waxy feel to it and so I wiped the surface with an acetone soaked rag before putting the epoxy on. The spacers had to be wrapped in thin plastic; cutting up the plastic garbage bag was a nightmare - static electricity stuck the pieces of plastic to my hands, the scissors, the benchtop, etc. Bear in mind that I needed a couple of hundred of them!

The section at the far side of this photo has the "paver" clamps applied. Unfortunately, once the pavers are there it is impossible to clean up any squeezed out epoxy. There must be a better way. The section in the foreground is waiting for the pavers.

Here is the foredeck after sanding and cleaning out the epoxy from the gaps, a dreadful job but fortunately there wasn't a lot of places where the squeeze came near the top of the groove.

I gave all the margin planks a coat of epoxy before applying tape to all the strips and the margin planks. Then the messy business of putting Sikaflex 291 into the grooves. I worked out the volume of the grooves roughly and bought three tubes of Sikaflex. The black stuff gets everywhere and there is quite a lot of wastage - I had to buy another 2 tubes. Four and a bit tubes did the job.

Here is the after deck after pulling up the tape which came up quite easily and cleanly; I was pleasantly surprised! I went over the whole area carefully with the belt sander (80 grit) and then with the random orbital sander (120 grit).

The white beech strips were coated with Deks Olje number 1 flooded on with a brush until no more was taken up. The white beech didn't want to take up much of this oil and I will put more on later. I prefer the satin look and none slip nature of  this oiled surface; I've done it before and it seems to wear well. The margin planks were given another coat of epoxy and the last 2 photos taken.

I think it looks pretty good!

There won't be anything posted here for some weeks because I am going away for a holiday in the UK. More when I return.

Propeller and Deck Planking

In an attempt to clear up my confusion about the propeller calculations I bought a copy of Dave Gerr's "Propeller Handbook".   This book has far more information than I need but I will follow his process carefully to determine the diam,eter and pitch of the propeller. It will be interesting to see how the result compares with the prop that is on the boat.

I have been working on the planking of the deck. There will be a "margin" plank 65mm wide around the gunwales and the coaming. Along the sides of the boat the 2 planks (along gunwale and around cockpit coaming) will over lap so they will be done in a single piece. I made templates out of cheap plywood for all the pieces because they are all curved. The templates were laid out on the planking stock to minimise waste. The stock was marked and the pieces cut out. Each piece was carefully trimmed to fit in its place and then they were all glued down. A couple of photos show the pieces being glued using 200 mm square concrete pavers.

One drawback of using pavers is that they make it diffcult to clean off any squeezed out epoxy so this has to be removed after it has set and the pavers removed. The trimming of the pieces and gluing them down was done in stages over a period of 3 days.

Here is a photo of the aft deck with the margin and king planks in place.

The space in side is going to be planked with parallel strips of white beech. The beech I bought was rough sawn 100 x 50 mm and 3 metres mm long. I put it through the thicknesser to reduce it to 45 mm thick and then through the bandsaw to get strips 45 x 8 mm.

I rough cut and laid the strips on the deck with 4mm gaps. Here are photos of both fore and aft decks with the strips on.

It will take 2 or 3 days to cut the strips accurately and glue them in pace - more paver clamping!