Garage-built Aluminum Miniboat Tears up the Surf. Or Not.

It’s the water-borne equivalent of building a minibike out of steel pipe and an old lawnmower engine. Except it’s a DIY personal watercraft made out of aluminum and an old chainsaw, and it has that same garage build feel – and the same disappointing results.

When we first saw the video below, we were hoping for one of those boats that let you water ski by yourself, or a wave-hopping, rooster tailing DIY jet ski. Alas, the chainsaw [MakeItExtreme] chose to power this boat is woefully underpowered, and the boat barely has enough oomph to make a wake. [MakeItExtreme] acknowledges the underwhelming results and mentions plans to fix the boat with a more powerful engine and a water jet drive rather than the trolling motor propeller they used. Still, whatever improvements they make will probably leverage the work they put into the hull, which is a pretty impressive display of metalwork. We’re used to seeing [MakeItExtreme] work in steel, so it was interesting to watch aluminum panels being cut, bent, and welded into a watertight hull. Looks like there’s plenty of room in there for more power, and we’re looking forward to version 2.0 of this build.

If you like rough and ready metalworking videos, there are plenty of them on [MakeItExtreme]’s YouTube channel. We’ve covered quite a few before, including this all-terrain hoverboard and a spot welder that’s more-or-less safe to use.

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Hackaday Links: August 7, 2016

The Starship Enterprise (no bloody A, B, C, or D) recently got a makeover. It was donated to the Smithsonian, and the workers at the Air and Space Museum took it apart and put it back together. Why? It’s the 50th anniversary of TOS. Hopefully the new show will be using some practical effects.

After years of trying, we’ve finally attained max buzzword. Here’s a pentesting hacker quadcopter drone, “a hacker’s laptop that can fly.” Why would anyone do this? Because, “You need to be close to the wireless signal to be able to read it. [Danger Drone] removes that barrier of physical access.” For just $500, you can do the same thing a coat hanger yagi can do. Amazing.

Q2 reports for 3D printer companies! Lulzbot is going gangbusters yet again. We’re looking at the greatest success of Open Source Hardware here. Stratasys, on the other hand, lost less money in Q2 2016. That’s their good news.

About a year ago, we heard about an LCD that was one inch high and ten inches long. That’s bizarre, but great for rackmount gear. The company behind this weird LCD is updating this weird and wonderful LCD and giving it touchscreen capability.

On this week’s edition of, ‘you’re going to cut your arm off with that thing’, here’s an angle grinder converted into a chainsaw.

A few weeks ago, we posted a link to this video, demonstrating an absurdly clever method for creating a mold for a fiberglass dome. You can just use a pendulum and a pile of dirt. Now, the mold for this fiberglass dome is complete. [J Mantzel] has already pulled 1/8th of his gigantic fiberglass sphere out of his mold, and there are only seven more to go. After that, he’ll find out if these sphere sections actually line up.

UK peeps! Hackaday and Tindie are doing a London Meetup! Details to come, but follow the event page on Hackaday.io.

I arrived in Vegas a day (or two) early for DEF CON. Instead of contemplating the banality of existence on the strip, I decided on a meetup at the grave of James T. Kirk. The meetup was a huge success. Walking two miles in 115° heat was not a great idea, but I didn’t die.

Hackaday Links: April 3, 2016

April Fool’s Day was last Friday, and the Internet was garbage for a day. Our April Fool’s prank was amazing, and in a single day garnered more views than the Raspberry Pi 3 launch announcement from a month prior. There just might be a market here for Apple. Here’s a short roundup of some of the best electronics April Fool’s posts:

This, surprisingly, was not an April Fool’s post. [Dave Jones] has been looking to upgrade his workspace for a few years now. He’s finally found a place. It’s the old Altium office in Sydney. [Dave] worked at Altium before spinning up the EEVblog, so this really is his old stomping grounds. It’s 4000 square meters (43,000 square feet), and exactly 3950 square meters larger than his current lab. What is he going to do with all that space? He’s looking for suggestions, but I would suggest an awesome model train layout. A [Dave Haynie]-style tour would also be acceptable.

Yesterday was the unofficial geekhack / deskthority / r/mechanicalkeyboards SoCal Mechanical Keyboard meetup at Datamancer in Montclair, CA. I was there, got a Control key to replace the Caps Lock key on my Novatouch, and took a lot of pictures.

It’s a presidential election year in the US, and that means millions of people are going to make America great again by polluting their front yard with campaign signs. These campaign signs are usually made out of coroplast, a material that looks like corrugated cardboard, but is made out of dead dinosaurs instead of dead trees. Coroplast is a very interesting material, and [uminded] tipped us off to some guy that makes mini speedboats in this rather uncommon material.

There are some things you just shouldn’t do. Combining octocopters with chainsaws, for example. You shouldn’t do it, but someone will anyway, and YouTube exists. Here’s an octocopter with a chainsaw.

Foxconn is buying Sharp. Sharp has a rather large portfolio of LEDs and optoelectronics, but this deal is mostly for Sharp’s large contract manufacturing business.

Massive Wood Joints With Chainsaw Mortiser

mortise-tenonOne common joinery method used in wood working is the mortise and tenon. A mortise is basically a hole in a piece of wood and the tenon is another piece of wood cut to tightly fit in that hole. The tenon is usually secured in place with either glue or a wooden pin or wedge.

The folks over at [WayOutWest] were building a fence and needed a way to cut a bunch of mortises in 4×4 inch posts to accept 2×6 inch rails. Although they had a chainsaw, trying to cut a mortise with it by hand turned out to be super dangerous because the chainsaw would kick up every time the tip of the blade touched the wood. The team had some parts kicking around so they made a fixture to hold the chainsaw as it is plunged into the 4×4’s.

The contraption’s frame is made from an old scaffolding stand and the slides are just pipes inside of pipes. The chainsaw is bolted to the slide and a lever moves it forward and back. A second lever moves the piece of wood getting mortised up and down so that the mortise can be cut to any width. This is a pretty ingenious build that only cost a little effort and will end up saving a bunch of time mortising countless fence posts.

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What Could Possibly Go Wrong Giving a Robot a Chainsaw?

Chainsaw wielding robot

[Morgan Rauscher] is a rather eccentric artist, inventor, maker, professor… jack of all trades. His latest project is called the Art-Bot – and it’s an 8′ robotic arm equipped with a chainsaw. Did we mention you can control it via arcade buttons?

He’s been building sculptures for over 10 years now, and has enjoyed observing the evolution of automated manufacturing – from CNC machines to laser cutters and even now, 3D printers. He loves the technologies, but fears machines are making it too easy – distancing us from the good old physical interaction it once took to make things with a few simple tools. His Art-Bot project attempts to bridge that gap by bringing tactile transference to the experience.

The cool part about the Art-Bot is that it is mostly made of recycled materials – in particular, bicycle parts!

Making a robot from bicycle parts is really not that difficult, and I highly recommend it.

The rest of the robot consists of electric actuators (linear), the control circuitry, and of course — a chainsaw. For safety’s sake, [Morgan] also built a polycarbonate wall around it to protect users from it going on a murderous rampage wood chips and other debris thrown from the robot.

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Electric Chainsaw Teardown

An electric chainsaw with its case removed

For his Beyond Unboxing series, [Charles] tore apart a Ryobi cordless chainsaw to get a better look at how this battery powered tool works.

Inside he found a three-phase motor and controller. This motor looks like it could be useful in other projects since it has a standard shaft. The battery pack was popped open to reveal a set of LG Chem 21865 cells, and some management hardware.

With all the parts liberated from the original enclosure, [Charles] set up the motor, controller, and battery on the bench. With a scope connected, some characterization of the motor could be done. A load was applied by grabbing the spinning shaft with welding gloves. [Charles] admits that this isn’t the safest way to test a motor.

While it is a very fast motor, the cut-in speed was found to be rather low. That means it can’t start a vehicle from a stop, but could be useful on e-bikes or scooters which are push started.

This chainsaw a $200 motor, controller, and battery set that could be the basis of a DIY scooter. It sounds great too, as the video after the break demonstrates.

[Thanks to Dane for the tip!]

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Russian Man Builds a Chainsaw Out of a Grinder

Ready for another ill-advised tool hack we definitely do not recommend you try at home? Why not take a gander at this man’s home-made chainsaw… made out of a grinder! (translated)

What this (Russian?) man has done is modified his large electric grinder — into a chainsaw. He’s added a weld plate, some mounting locations, and now it can accept either grinding wheels, or after a few minutes of assembly, a full length chainsaw blade attachment. He’s probably pretty proud of himself, but we really hope he doesn’t end up losing a finger… or worse.

Anyway, we’re not even going to point out the lack of safety guarding in this video, because it is such an obvious bad idea in general. That being said, it actually works in the demonstration!

Stick around — don’t sweat too much though, no one gets hurt. There is one thing that can be said about this project though… It’s most definitely a hack.

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