When you’re soldering, smoke rises from your iron. That smoke is full of a variety of chemicals, depending on what type of solder you’re using, but it’s almost certainly not good for you. That’s why you can buy fume extractors to suck smoke away.
But benchtop extractors tend to suck, and not in the way they’re supposed to. It can be hard to get the extractor to pick up all the fumes, leaving fumes that float into your face.
Over at Other Machine Co., they built up a custom downdraft fume extractor to solve this problem. The downdraft extractor is a table that you work on, providing downwards suction that grabs the fumes. Their table uses a standard MERV13 air filter that’s rated to trap particles as small as 1.0–0.3 μm. Cooling fans provide the airflow, and a piece of perforated sheet metal acts as a work surface.
The table works great for soldering, and is also helpful for working with other chemicals like adhesives and solvents. DXF files for the frame parts are provided, and everything else can be sourced from McMaster.
There’s nothing quite like getting an eye full of solder fumes, but when it comes to solder fume extraction, the most common solution take up a whole lot of work area. Here’s a very clever solder fume extractor that doesn’t get in the way, and can be perfectly positioned over the acrid brimstone of a soldering station.
The build consists of a cheap bathroom vent fan built into the back of the workbench feeding into a long PVC pipe that blows the exhaust to the floor a few feet away. The fan is controlled by a simple wall switch, but the intake is where this build really shines. It’s a series of hard, flexible plastic segments that allow the intake to be precisely oriented above the work piece, or wherever it’s most convienent to suck solder fumes from.
This solder fume extractor is just a part of a really amazing electronics workbench. A lot of thought went into this workspace, from threaded inserts in the work surface to mount a panavise to an amazingly thoughtful equipment rack for computers, monitors, and other assorted heavy equipment.
via Hacked Gadgets
Here’s an easy to follow guide for building your own glove box. It’s a lab tool that contains the project you’re working on to keep things in or out. For instance, we could have used this a few years back when we tried to add an acrylic window to a hard drive. Instead, we ended up putting several hours of work into a cool-looking paperweight. But it will also come in handy for chemistry experiments that generate harmful or dangerous byproducts.
The picture above tells most of the story, but [Jason Poel Smith] does include several good tips about the construction in his video. He uses weather stripping along the edges of the clear container to ensure a seal. The hose is used to provide negative pressure so that no fumes leak out. We figure adding a smaller hole on the opposite side with a charcoal filter will help air pass into the chamber to serve as a fume extractor.
We’ve already seen a similar setup for a reflow oven. Perhaps this is the perfect solution to protect yourself from 3D printing fumes. We’re sure you saw the headlines about 3D printing being as bad as smoking cigarettes.
Continue reading “Make your own fume-extracting glove box”
Our homemade shop tools rarely reach this level of finished quality. We probably would have stopped with assembly of this USB powered fume extractor. But [X2jiggy] went for style points by adding a coat of paint.
There are several nice features included in his build. He wanted it to be very easy to power the device so he settled on the 5V USB standard. But a PC fan running at 5V won’t pull much air. He used a boost converter board to ramp that up to 12V. The enclosure is a wooden hobby box. He drilled mounting holes and an airflow opening in the bottom of the box for the fan. The lid of the box has a rectangular opening which accepts a carbon filter meant for aquariums. The rocker switch and LED seen above are also nice touches, but not strictly necessary if you build this for yourself.
We’re still in the habit of gently blowing the fumes away from us as we solder. So the question is, will this device save us from a gruesome disease down the road, or is it mostly to capture the odor of the solder fumes?
Looking for a more permanent setup? You should build a solder hood for your workbench.
Continue reading “USB fume extractor takes stink out of soldering sessions”
Hobby electronics from 1982
[Lennart] came across one of his projects from several decades ago. It’s a twinkling star which blinks LEDs at different rates using some 7400 logic chips and RC timers.
Solder fume extractor
We’re still blowing the solder fumes away from us using our mouth, but this might inspire us to do otherwise. It’s a large PC fan mounted on a lamp goose neck. It clamps to the bench and is quite easy to position.
Ultrasonic liquid level measurement
Wanting a way to measure the liquid in these tanks without submerging a sensor, [JO3RI] turned to an Arduino and an ultrasonic rangefinder. His method even allows the level to be graphed as shown in his Instructible about the project.
Adding an ‘On’ light to save batteries
Dumpster diving yielded this electronic drum machine for [MS3FGX’s] daughter to play with. The problem is that pushing any of the buttons turns it on, it doesn’t have an auto-off, and there’s no way to know when it’s on. This is unacceptable since it runs on 5 AA batteries. His quick fix adds this green On LED. We wonder if he’ll improve upon this and add an auto-off feature?
CMOS Binary Clock
This is a portion of the guts of [Dennis’] CMOS Binary Clock project from the early 2000’s. He even built a nice case with a window for the LEDs which you can see are mounted perpendicular to the protoboard.
We have no idea how well this diy fume extractor works, but it sure does look great! We’ve been thinking that it’s time to stop trying to blow away the solder fumes while working on project and this might be just the kind of motivation we need. The 6″ cube doesn’t get in the way of your work, and since it includes a carbon filter it should keep the smell of burning flux to a minimum.
[Jeff’s] project basically brings together a 120mm PC cooling fan with a power source. The fan mounts inside of a steel enclosure he picked up from Digikey. The face plates that come with it were modified to accept the fan, as well as the grill hardware that goes with it. Before assembling he painted the box with some Rustoleum “Hammered” black spray paint. This gives it a texture that will hide any imperfections in your application.
We’re a bit hazy on how this is being powered. It sounds like he’s plugging the cord into mains but we don’t see any type of regulator to feed what must be a 12V DC fan. There are build instruction available but they didn’t clear up our confusion.
Teensy CNC mill
The guys at Inventables put together a neat CNC router kit that looks very interesting. It uses Makerslide linear bearings and CNC’d parts to make a surprisingly cheap frame for something that can engrave wood and metal. Inventables is running a Kickstarter-esque preorder to fund this production run but right now they’re 30 orders short. We’d like to see how these routers turn out in the real world, so if you’re on the fence (or just want a CNC router), this might be the time to buy.
DIY solder fume extractor
[Jared] sent in a fume extractor he put together. It’s a small PC case fan with a carbon filter sandwiched between a pair of grilles. Not much, but if should keep those wonderful flux fumes away from your face.
A million fake Internet points to the first person to come up with a DIY clone
[filespace] shared an awesome Electrofishing video with us. Electrofishing pulses a DC current through two electrodes attached to a boat. This current causes galvanotaxis in fish, causing them to swim towards the anode. The fish can be caught with a net and released afterwards; there’s no damage to the fish at all. We’d love to see a DIY solution, but throwing M-80s into a lake doesn’t count.
Improving GSM reception with a bit of metal
[Raivis] lives in the country, so even his voice reception on GSM is terrible, let alone data. Inspired by an earlier post, [Raivis] built a discone antenna to improve his cell signal. Now everything is crystal clear and his Huawei E1752 USB/GSM modem improved from 3 mbps down to 5 mbps down.
CNC halftone photos
[Dana] sent in a few pics of a project he’s working on. He’s making halftone prints with a CNC and metal. We’ve seen this before, but we’re really loving [Dana]’s take on it. He’s using two-layer engraving plastic with a .005” engraving tool on his CNC. There’s a gallery of his work after the break; [Dana]’s portrait is 14000+ dots and took 6 hours, his bosses kids are 16000+ dots and took 4 hours, and [Dana]’s niece is 5500 dots and took 35 minutes. Very awesome work, and now [Dana] has fulfilled a lifelong dream of machining his face.
Continue reading “Hackaday Links: May 29, 2012”