tools

166 Articles

Embossing Leather With A Pipe Bender And 3D Printed Tooling

December 20, 2024 by 12 Comments

Embossed leather belts can be deliciously stylish. However, the tooling for making these fashionable items is not always easy to come by, and it rarely comes cheap. What do we do when a tool is expensive and obscure? We 3D print our own, as [Myth Impressions] demonstrates.

The build is based around a Harbor Freight pipe bender. However, instead of the usual metal tooling, it’s been refitted with a printed embossing ring specifically designed for imprinting leather. The tool features raised ridges in an attractive pattern, and the pipe bender merely serves as a straightforward device for rolling the plastic tooling over a leather belt blank. Once cranked through the machine, the leather belt comes out embossed with a beautiful design.

It’s a neat project, and the 3D printed tooling works surprisingly well. The key is that leather is relatively soft, so it’s possible to use plastic tools quite effectively. With that said, you can even form steel with printed tooling if you use the right techniques.

We’ve seen some other neat leatherworking hacks before, like this nicely-modified Singer sewing machine.

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Hacker Tools, Hacked Tools

December 14, 2024 by 3 Comments

We just love a good DIY tool project, and more so when it’s something that we can actually use cobbled together from stuff in our closet, or hacked out of cheap “toys”. This week we saw both a superb Pi Pico-based logic analyzer and yet another software frontend for the RTL-SDR dongle, and they both had us thinking of how good we have it.

If you don’t already have a logic analyzer, or if you have one of those super-cheap 8-channel jobbies, it might be worth your while to check out the Pico firmware simply because it gets you 24 channels, which is more than you’ll ever need™. At the low price of $4, maybe a little more if you need to add level shifters to the circuit to allow for 5 V inputs, you could do a lot worse for less than the price of a fancy sweet coffee beverage.

And the RTL dongle; don’t get us started on this marvel of radio hacking. If you vaguely have interest in RF, it’s the most amazing bargain, and ever-improving software just keeps adding functionality. The post above adds HTML5 support for the RTL-SDR, allowing you to drive it with code you host on a web page, which makes the entire experience not only cheap, but painless. Talk about a gateway drug! If you don’t have an RTL-SDR, just go out and buy one. Trust me.

What both of these hacker tools have in common, of course, is good support by a bunch of free and open software that makes them do what they do. This software enables a very simple piece of hardware to carry out what used to be high-end lab equipment functions, for almost nothing. This has an amazing democratizing effect, and paves the way for the next generation of projects and hackers. I can’t think of a better way to spend $20.

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Build Yourself A Useful Resistor Decade Box

November 22, 2024 by 18 Comments

If you’ve ever worked with guitar pedals or analog audio gear, you’ve probably realized the value of a resistor decade box. They substitute for a resistor in a circuit and let you quickly flick through a few different values at the twist of a knob. You can still buy them if you know where to look, but [M Caldeira] decided to build his own.

At its core, the decade box relies on a number of 11-position rotary switches. Seven are used in this case—covering each “decade” of resistances, from 1 ohm to 10 ohm and all the way up to 1 megaohm. The 11 positions on each switch allows the selection of a given resistance. For example, position 7 on the 100 ohm switch selects 700 ohms, and adds it to the total resistance of the box.

[M Caldeira] did a good job of building the basic circuit, as well as assembling it in an attractive, easy-to-use way. It should serve him well on his future audio projects and many others besides. It’s a simple thing, but sometimes there’s nothing more satisfying than building your own tools.

We’ve seen other neat designs like this in the past, including an SMD version and this neat digital decade box. Video after the break.

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Ask Hackaday: How Much Would You Stake On An Online Retailer

November 8, 2024 by 69 Comments

On the bench where this is being written, there’s a Mitutoyo vernier caliper. It’s the base model with a proper vernier scale, but it’s beautifully made, and it’s enjoyable to see younger hardware hackers puzzle over how to use it. It cost about thirty British pounds a few years ago, but when it comes to quality metrology instruments that’s really cheap. The sky really is the limit for those in search of ultimate accuracy and precision. We can see then why this Redditor was upset when the $400 Mitutoyo they ordered from Amazon turned out to be nothing of the sort. We can’t even call it a fake, it’s just a very cheap instrument stuffed oddly, into a genuine Mitutoyo box.

Naturally we hope they received a refund, but it does raise the question when buying from large online retailers; how much are we prepared to risk? We buy plenty of stuff from AliExpress in out community, but in that case the slight element of chance which comes with random Chinese manufacture is offset by the low prices. Meanwhile the likes of Amazon have worked hard to establish themselves as trusted brands, but is that misplaced? They are after all simply clearing houses for third party products, and evidently have little care for what’s in the box. The £30 base model caliper mentioned above is an acceptable punt, but at what point should we go to a specialist and pay more for some confidence in the product?

It’s a question worth pondering as we hit the “Buy now” button without thinking. What’s your view? Let us know in the comments. Meanwhile, we can all be caught with our online purchases.

Thanks [JohnU] for the tip.

The Tiny Toolkit Manifesto

September 22, 2024 by 47 Comments

Most of us have some form of an on-the-go toolkit, but how much thought have we put into its contents? There’s a community of people who put a lot of thought into this subject, and EMF Camp have put up one of their talks from earlier in the summer in which [Drew Batchelor] sets out their manifesto and introduces tinytoolk.it, a fascinating resource.

The talk is well worth a watch, as rather than setting the tools you should be carrying, it instead examines the motivations for your kit in the first place, and how to cull those which don’t make the grade. If an item seems to see little use, put a piece of tape with the date on it every time it comes out, to put a number on it. As an example he ended up culling a multi-tool from his kit, not because it’s not an extremely useful tool, but because he found everything it did was better done by other items in the kit.

It’s probable we’ll all look at our carry-around kit with new eyes after watching this, it’s certain that ours could use a few tweaks. What’s in your kit, and how could you improve it? Let us know in the comments.

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3D Print Yourself These Mini Workshop Tools

September 6, 2024 by 27 Comments

Kitting out a full workshop can be expensive, but if you’re only working on small things, it can also be overkill. Indeed, if your machining tends towards the miniature, consider building yourself a series of tiny machines like [KendinYap] did. In the video below, you can see the miniature electric sander, table saw, drill press, and cut-off saw put through their paces.

Just because the machines are small, doesn’t mean they’re not useful. In fact, they’re kind of great for doing smaller jobs without destroying what you’re working on. The tiny belt sander in particular appeals in this case, but the same applies to the drill press as well. [KendinYap] also shows off a tiny table and circular saw. The machines are straightforward in their design, relying largely on 3D printed components. They’re all powered by basic DC brushed motors which are enough to get the job done on the small scale.

They look particularly good if tiny scale model-making is your passion.

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Hackaday Links: June 9, 2024

June 9, 2024 by 32 Comments

We’ve been harping a lot lately about the effort by carmakers to kill off AM radio, ostensibly because making EVs that don’t emit enough electromagnetic interference to swamp broadcast signals is a practical impossibility. In the US, push-back from lawmakers — no doubt spurred by radio industry lobbyists — has put the brakes on the move a bit, on the understandable grounds that an entire emergency communication system largely centered around AM radio has been in place for the last seven decades or so. Not so in Japan, though, as thirteen of the nation’s 47 broadcasters have voluntarily shut down their AM transmitters in what’s billed as an “impact study” by the Ministry of Internal Affairs and Communications. The request for the study actually came from the broadcasters, with one being quoted in a hearing on the matter as “hop[ing] that AM broadcasting will be promptly discontinued.” So the writing is apparently on the wall for AM radio in Japan.

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