Happiness Is Just A Flaming Oxy-Fuel Torch Away

April 2, 2014 by Kristina Panos 13 Comments

The Egg-Bot is pretty awesome, we must say. But if you have one, you end up with lot of delicate, round things rolling around your abode and getting underfoot. Warmer weather is just around the corner, so segue from spring gaiety to hot fun in the summertime with the MarshMallowMatic kit from [Evil Mad Scientist].

The MarshMallowMatic is a CNC oxy-fuel precision marshmallow toaster based on the Ostrich Egg-Bot design. Constructed from flame-retardant plywood, it is sure to add an element of delicious danger to children’s birthday parties and weekend wingdings alike. You don’t have to get too specific with those BYOM invitations because this bad boy will torch standard and jumbo marshmallows like a boss.

The kit includes a 5000°F oxy-fuel torch and a 20 ft³ oxygen tank, but the tank comes empty and you’ll have to supply your own propane, acetylene, or hydrogen. It comes with adapters to fit disposable propane and MAPP cylinders, which are also not included. However, you will receive a fine selection of sample marshmallows to get you started. Watch the MarshMallowMatic fire up some happiness after the break. You could toast a special message and load it into this face-tracking confectionery cannon to show how much you care.

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Shapeoko 2 Mods: Dust Mitigation And Limit Switches

March 26, 2014 by Rich Bremer 17 Comments

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Not long ago the Shapeoko 2 came out. In case you missed it, the Shapeoko 2 is the 2nd generation bench-top CNC Router of the namesake. All axes roll on Makerslide and v-wheels. The X and Y axes are belt driven, power is transmitted to the Z axis by lead screw.

As with most products, there will be people who must hack, mod or upgrade their as-received item. If you are a regular Hackaday reader, you are probably one of those people. And as one of those people, you would expect there have been a few individuals that have not left this machine alone.

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Mechanical Iris Will Make You Want A Laser Cutter Even More

March 24, 2014 by James Hobson 35 Comments

Mechanical irises are very intricately designed mechanisms that are mesmerizing to see in action — and if you have a laser cutter, you could make one in less than 10 minutes.

Our “Teacher of Science”, Instructables’ user [NTT] has revised a previous Instructables design on a mechanical iris to improve it. The original design used three layers of components and dowel pins for every joint. What [NTT] has done is reduced this to two layers, and eliminated half of the pins required by designing clever circular cutouts. The result is a very slick mechanical iris that is very easy and quick to build — provided you have the tools.

Stick around to see the original iris open and close — unfortunately there’s no video of the new design — but we think you can imagine the differences.

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Humble Beginnings Of A Pick And Place Machine

March 23, 2014 by James Hobson 10 Comments

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[Pete’s] invented a product called an AIR Patch Cable designed to interface with an airplane’s intercom, and is looking to manufacture and assemble them himself — unfortunately, the circuit boards are tiny, and SMD components aren’t exactly the easiest to install. So he decided to build a pick and place machine to do it for him!

It’s not finished yet, but [Pete] has reached a major milestone — he’s finished the base CNC machine aspect of it. He opted for a kit build for the major mechanical components, the Shapeoko 2 — its a solid design and if you decided to make something from scratch it’d probably cost much more and take a lot longer.

From there he began selecting his electronics individually. He’s chosen the Big Easy Driver by Sparkfun to control his stepper motors, which supports a maximum size of NEMA 17 steppers, so he bought five of those too. To control it all, he’s using LinuxCNC which is an excellent choice — and if you’re not crazy about Linux, you can actually download Ubuntu 10.04 with LinuxCNC pre-installed for you to make it super easy — you’ll just need an old dedicated PC to use.

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DIY CNC Dust Collection Really Sucks!

March 23, 2014 by Rich Bremer 23 Comments

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CNC Routers are great. If you’ve ever used one you know this but you also know that they will cover the machine and everything around it with a layer of dust. It is certainly possible to use a shop vac to suck up the dust coming from the router, however, the only problem with that is the shop vac’s filter will clog with dust and lose suction, defeating the intent of your vac system.

[Mike Douglas] was ready to step up his CNC game and decided to make his own dust separator. This design is extremely simple and only uses a couple 5 gallon buckets, a few PVC fittings and pieces of wood. To keep the cost down and the style up, the accompanying ‘shop-vac’ is also made from 5 gallon bucket with a vacuum lid. The project is well documented so head over to his site and check out the build process.

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A Different Kind Of CNC Workpiece Clamp

March 15, 2014 by James Hobson 16 Comments

[Mike Douglas] joined the world DIY CNC machining recently with a FireBall X90 CNC router. Instead of buying an expensive aluminum T-slot bed, he decided to try something we haven’t seen before…

His local hardware store sells aluminum bar clamps designed for clamping wood together — the best part? Only $10 each. What he’s done is added the bar clamps along the two sides of his bed, by adding plywood braces attached to the outside frame of the machine. He is losing a few inches of his usable bed area, but the added convenience of a quick clamping system is well worth it.

With the clamps in place, all he has to do is add two wooden braces (the black bars in the image above) to hold his work piece in place. This wouldn’t work very well for cutting metal, but this CNC router isn’t designed for that anyway.

Too bad he didn’t finish it sooner — it would have been a great entry for our recent Hackaday Hackerspace Henchmen CNC contest!

DAGU: The Standalone CNC Controller

March 14, 2014 by Brian Benchoff 29 Comments

CNC

In terms of user interfaces, 3D printers are far, far beyond the usual CNC machine. It’s difficult to find a new, commercial 3D printer without some sort of display, set of buttons, and an SD card slot for loading G Code and running a printer. For CNC routers, though, you’re usually dealing with a parallel port interface connected to an old computer.

DAGU hopes to change that by providing a huge 240×128 LCD display, a bunch of buttons, and an SD card slot for loading G Code directly from an SD card. This is a fully functional controller, able to deliver 3.5 A to each stepper motor winding.

Right now DAGU is in the prototype stage, but already there are some really interesting features: the interface allows for a basic preview of the job before it begins, and should be somewhat affordable. At least as cheap as using an old computer for CNC control, anyway.

Video demo of the use and operation of DAGU below.

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