Building an Aluminum Sailboat Pt 4 - How the Hull Plates are Shaped | EP 222
414K views · Sep 25, 2022 · Travel & Events
Comments · 214
@jarnosaarinen4583 · 3 years ago
WOW What a Beautiful Boat! Klaas is a very very good tradesman!
1
@davefoster7770 · 4 years ago
The English wheel is beyond engineering and into the realms of art. Incredibly skilled work. Your guys pass it off as if it's nothing. You chose well.
38
@matthijsklomp · 3 years ago
Impressive craftsmanship!
2
@ninaforrester8552 · 2 years ago
Been mig welding Al over 20 years. We don't grind weld preparation we cut it with a carbide blade sometimes known as a meat axe. The grinding process leaves impurities that contaminate the weld
1
@Iam-mad · 4 years ago
You enjoy higest dutch craftmanship there, this Aluboat will outlast all those Amels and Oysters.. <br>A strong advice: make very little hull-through holes (1 or maybe 2 as central accesspoints) and bring them with a straight tube over waterline level. In this way You are unsinkable, and if anything blocks the hole, You can just push a stick into the tube and push it free. I don´t know the english term for this, but it is a very good safety feature, because a leaking seacock did sink a many boats. ;)
9
@DH-le4ve · 3 years ago
Thanks for this juicy contenent
1
@horseshoe182 · 6 months ago (edited)
ive never seen the English wheel used on this thickness of plate, these guys are next level boat builders. excellent workman ship. watching from australia.
@TheTomt50 · 4 years ago
So interesting, and heartening to see how important skilled craftsmanship is required in aluminum boat building. Clearly art as much as skill.
8
@windward2818 · 3 years ago
Some observations based on the video. The construction approach is very traditional and proven. <br><br>The hull plates are butt welded on the inside after tacked in position on the outside with removable stringers (longitudinal braces). Before welding the hull plates are chamfered (beveled) on the inside, placed and tacked in position, and welded completely through to the outside in continuous welds. The most common weld for 5086ish hull plates is GMAW-P (Pulse MIG) and most likely uses a push-pull MIG gun. My guess is the hull weld area is preheated by one worker to a predetermined temperature and then the welder follows the preheat. Then the inside weld is V cut from the outside and then welded to get over 50% penetration, then the weld is sanded flush. As such the weld two sided weld has complete penetration and the welding wire is chosen for similar strength as the as welded 5086 (5086-O). <br><br>The frame welds are stitched, meaning not continuous, so as to limit unwanted warping of the hull plates. If you can get large enough plates and have a large enough laser cutter, you can cut complete frames which are cut nested which does not require welding the deck top portion of the frame. The frame is complete like a huge donut. As such, it can be taken to a very flat large welding indexing table where the T plates are welded on. With the T plates attached the frame will not warp or distort as you weld the boat together. <br><br>The frames can be laser or waterjet cut and are usually nested on the sheet. The frames can be very accurately cut as per the CAD file and essentially provides a very accurate positioning guide when welding the boat.<br><br>The T Plates, which can also be water jet cut if not wider than about 4 inches, on the frames is considered a very common addition for strength (buckling) and also have many other functions, like holding of the hull insulation and attaching inside facia. <br><br>A curious item is it seems the passage bulk heads do not have an extrusion liner or cap, which acts like a T plate with more advanced geometry on the door opening. The bulkheads are also reinforced with grid plates. Missing on the bulkhead is having T plates around all openings to address metal fatigue (crack stops).
1
@TheJarrodh · 4 years ago
Forming the aluminum like this also increases the strength via cold working.
1
@eduardgindin3763 · 3 years ago
now I see why it makes a lot of sense to build a multi hard-chine boat...
@scr5051 · 4 years ago
guys aluminium is the best, greetings froom colombia south america, twon oceans in a country south american
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