In an old barn in Mörkö, Miguel started building the mould in 1966, working day and night for three month. Then he was advised by 2 "know it all guys" - Göran Ulvengren and
Lennart Gradén - to produce a plug instead ! Miguel took the advice as well as a sledge hammer and disintegrated the mould, thus destroying 3 months of hard work ... Could be called a tough start...
When the plugs - hull, deck, cockpit, etc. - were completed they were moved to a barn at Ekholmsnäs, Lidingö.
The last thing to arrange was the keel. Here Miguel saved a lot of work, when Arvid Laurin suggested him to contact Fritjof Gustafsson in the "Rosättra Båtvarv", where
Casella II was built in 1958. Her keel plug was still in store and consequently re-used for the L31. The keels - 2.200 kg - were then made - and galvanised - in Eskilstuna..
Then everything was ready for the DIY work could begin with an estimated 2 months for building the hull and deck.
Miguel made a simple contract with each new owner, in which was stipulated that the owner himself should contact Arvid Laurin for Royalty payments (600-700 SEK). The rent of the plugs
were 2000 SEK
After the first 25 boats were produced in Lidingö, the plugs were relocated to Allemora at Riala-Sättra in 1973, where the last 11 were completed.