The keel is almost ready!! A few posts back, we made a mould for the keel out of concrete and tried to cast the lead ourselves. It turned out to be very challenging to do in our facilities, so I decided to have a professional handle it the best decision. Thanks to Metallivalimo  Arnie Oy ! The 3D-printed mould was secured inside a wooden support frame and treated with release agent prior to casting. Encasing the mould in resin-bonded sand After the sand had fully cured, the mould assembly was inverted and the guide bushings were fitted. The sand had fully cured, and the white 3D-printed mould was visible through the casting channel.                                                                                                    ...