If you’ve been on the Internet long enough to know about Hackaday, we’ll wager you’re familiar with the concept of autonomous sensory meridian response (ASMR) — a tingling sensation in the scalp that’s said to be triggered by certain auditory stimuli. There are countless videos on YouTube that promise to give you “the tingles” using everything from feather dusters to overly starched shirts, but for us, the tool of choice is apparently a Lincoln Electric Magnum PRO 100SG spool gun in the hands of [Bob].
Admittedly we can’t promise the latest Making Stuff video will induce a euphoric physical sensation for all viewers, but at the very least, we think you’ll agree that watching [Bob] and his brother methodically welding together the twelve foot hull of what will eventually be a custom jet boat is strangely relaxing.
While we usually associate [Bob] with scratch builds, this time he’s actually working his way through a commercial kit. Sold by Jet Stream Adventure Boats, the kit includes the pre-cut aluminum panels that make up the hull, stringers, and top deck — niceties like a windshield and seats are offered as extras. The engine and jet drive need to be salvaged from an existing personal watercraft (PWC), but that will have to wait for a future video. For now, there’s a boat-load (get it?) of tack welding to be done.
The build process looks to go pretty smoothly, except for when they attempt to put the bow of the boat together. Unable to get the two side panels to meet properly, [Bob] eventually has to contact the manufacturer. After some back and forth, it turns out that a bit must have broken on the CNC when the hull panel went through, as a key cut was made nearly 8 inches (20 cm) too short. He was able to complete the cut with a jigsaw and continue on with the build, but we’re still scratching our heads at how this wasn’t caught before it got shipped out.
It won’t be the first homemade boat we’ve covered, but given [Bob]’s attention to detail, we’re particularly excited to see how this one develops in future videos. Especially since he’s foolishly bravely asked the commenters to come up with a name for his new craft.
There is an age-old tradition among hackers of just making it yourself. Whether the real thing is too expensive or you think you can make a better one, the itch strikes, and it can quickly spread. [Homemade Madness] has quite the itch as he builds his own jetski.
What is a jetski but a boat with a shell on top? In an earlier video, he created a boat out of plywood and, after the usual steps of fiberglass and sealing, was proud to float around in his relatively normal-looking boat. But now that he had a working bottom, it was time to return to CAD. He printed out templates for all various shapes he would need, each labeled with a different designator, and glued them to the plywood. No fancy CNC here, just a steady hand and a jigsaw. We love the professional build instructions he compiled for himself that detail in LEGO-like quality exactly how each piece slots into where and in what order to do them. In addition to the top layer of the jetski, he also designed a stand for the boat to rest on while he made it, which is just going the extra mile. A ceiling-mounted winch made it easy to lift the ship into position. Next, he connected all the various framing pieces with PU glue. Thin plywood acted as cladding on top of the skeleton. Filling, sanding, and fiberglass overlaid the structure, making it waterproof. More sanding and some primer later, and it was ready for another water test.
He designed a version with an outboard motor, but he’s trying to build one with a built-in jet drive. So we’re looking forward to seeing the next step and him flying around on his custom watercraft. But what he has already done is quite impressive. If you’re looking for something a little smaller to pull you around the water, why not take a look at this little 3d printed tug boat? Video after the break.
Heat straightening (PDF) utilizes an oxy-acetylene flame that is used to quickly heat a small section of a workpiece. As the metal cools, it contracts more than it expanded when heated, resulting in a changed volume. With skill, any distortions on a shaft can theoretically be straightened out with enough time (and oxy-acetylene). Heat straightening is commonly applied to steel but works on nickel, copper, brass and aluminum additionally.
[Keith Fenner’s] standard process for trueing stock is sensitive enough that even sunlight can introduce irregularities, but at the same time is robust enough to carry out in your driveway. However, even though the only specialty tools you need are a torch, compressed air and work supports, watching [Keith] work makes it clear that heat straightening is as much an art as it is a science. Check out his artistry in the video below the break. Continue reading “The Elements Converge For ±.002 In Tolerance”→
It is a common belief (or fact, depending who you talk to) that boats are money pits. Surely, it is a fun past time even for the lucky person flipping the bill, but what if you could build a boat from locally found and purchased items. [Bill] did just this and he did it for a mere $30. His creation is affectionately called Thunder Bucket.
The overall design is a pontoon-based sail boat. You’ll notice from the photo that the pontoons are made from many 5 gallon buckets attached together. The wood frame and deck come courtesy of old pallets that were taken apart. The mast is a fence post and a standard blue tarp rounds out the resourcefulness as it is used for the sail.
Admittedly, this may not be the coolest boat on the waterways but it is a boat, it’s made from non-boat-like items and it works. Believe it or not [Bill] is a professional boat builder. Sometimes ‘why not?’ is the best reason to do something.
For the last few years, the couple has been working on the SV Seeker, a motor sail junk, since late 2011. They have a wonderful build log, but they’ve also gone the extra mile and documented the entire build process on video. Their YouTube channel is one of the best subscriptions you can have on the site, constantly updated with new portions of the build.
Yes, building an oceangoing ship in a landlocked state may seem like an ill-informed idea, but Tulsa, OK is the home of the port of Catoosa, about 400 miles and 20 locks from the Mississippi river, then another 600 miles to the Gulf of Mexico and the open ocean.
Below you can find some of the highlights of [Doug] and [Kay] fabricating the prop for their ship. First, a pattern was created with a CNC machine, then a mold was made to cast each blade in brass. It’s an impressive bit of work putting all these tools together, and you really get a sense of the challenge of building something this big.