Plastic Molding

Liquid plastic casting resins tend to be expensive and have set properties that limit your flexibility.  Mikey77 has come up with his own material out of materials so common, chances are you already have them. Best of all, you choose the color, viscosity, and set time yourself based on your needs.

He calls the stuff Oogoo, a name reminiscent of Sugru, an off the shelf product with very similar properties. In a nutshell, his recipe is very simple, just mix corn starch with silicone caulk.

The problem with silicone is that it takes a long time to dry from the outside in, the corn starch allows it to dry from the inside out, and very quickly. The ingredients are pretty safe and stable, so you can mix in your own dyes and other ingredients. Check out his full instructable here.

Thermochromic Pigment

I’ve been wondering ever since the Hypercolor days why no one sells a house paint that changes from black to white as it gets warm. The same goes for shingles, jackets, etc. I can only assume that the costs of production must still outweigh their value as an active thermal insulation, but now that I see this, I’m tempted to at least make myself a jacket. In the video below, there is a tutorial on how to make fabric that quickly changes from black to white as it gets hot.

(via Badass Nerd)

Worlds Smallest Dustpan?

Proving once again that the Post-It Note is one of man’s most versatile inventions. (via thereifixedit)

Tilt Shifting Paintings

Tilt shifting in photography is when you deliberately put your lens out of line with the sensor in such a way that it changes the focus on the sensor/film rather than just based on distance of objects and depth of field. The resulting photos and videos trick the eye into thinking it is seeing a tiny scale model rather than something miles away. A similar effect can be created through video/image editing. In the above pictures, artcyclopedia has added an effect similar to tilt shift via software to several of Van Gogh’s works (click the picture to see their full gallery and the originals). I love the effect.

I think the kind of visual cues we take from tilt shifted photography are to some extent a product of the photographic age. We are used to seeing two dimensional representations of three dimensional space as seen through the single eye of a camera. When you look at a real scene through two eyes, whatever you are looking at is in focus, while anything out of focus is blurry and doubled (and by definition, not what you are currently looking at). One of the flaws with the current round of 3D movies is that while things have depth cues based on sending a different signal to each eye, there is no adjustable depth of field based on what you are looking at. The focus of any given object is chosen by the camera, rather than the viewer, and the whole image is the same distance away, even if each eye sees a different angle.

I did a little experimenting on my own to get a better understanding of things. I think the choice of impressionism is a good one. Impressionists have a tendency to capture the soul of a thing crisply, but without much detail. This means that when you blur a background, it looks believable rather than smeared. Creating this effect in Photoshop can be pretty simple.

Part of what makes tilt shift photography make things look miniature is the difference distance makes to depth of field. In tilt shift, focus is much more independent of distance. In a large scale photo, once you are focused a ways out, it tends to focus to infinity. Painters tend to make their paintings fully focused at all distances, which improves clarity, but degrades the feeling of depth. With a tilt shift effect I wanted to choose a subject in the composition, bring the eye to them, and then create the illusion of depth in the rest of the image by virtue of knowing where the eye is already looking. This is counter to one of the usual goals of composition: To keep the eye moving. Below is a Monet I found with a quick image search that served my needs nicely for a very simplified test.

The alterations I made can be seen below. I don’t think it made the image nicer, but I think it accomplished my compositional goal of directing the eye and holding it on the subject.

I chose it because it covers a vast distance, contains a subject to draw the eye, and has a tree that exists within the plane of focus, but in front of an area that I planned to blur. The  clarity of the tree is what makes the end result different from what you would see with a tilt shift lens. This only took a few minutes. Below are the steps I took. If you have a copy of Photoshop, give it a shot. It’s a good skill to have in your repertoire.

1. After opening the image, duplicate your background layer and work in the duplicate.
2. Select anything outside your intended focus area that needs to remain sharp. In this case, the tree and the canopy on the right.
3. Click on Select/Inverse.
4. Click the add layer mask button in your layers pallet.
5. Click select/Reselect.
6. Click on the gradient tool and make sure you have it set to a black to white reflected gradient.
7. Click on the part of your image that should remain focused and drag toward the edge of the picture perpendicular to the intended strip of focus and release.
8. Right Click on the layer mask and click on Apply Layer Mask.
9. Click on Filter/Blur/Gaussian blur, and drag the slider to create the blur.

I’m sure you can find a more long winded tutorial somewhere, but if you have a moderate knowledge of Photoshop, this should suffice as a bare bones process to get you started.

Leafy Zip Ties

Someone has come up with these fancy zip ties with leaves on the ends. They’ve got them in all sorts of colors for different application, from attaching plants to support rods, to making your iPod cord look like it’s sprouted white leaves. I like ‘em. I hope they become a thing. And they sell them on Amazon!.

How to get Data off an old Hard Drive

When getting a new computer, there is always the issue of how to get your stuff off of the old one, which is often not even functional, like the time I knocked a full glass of water into my power supply (oops). This elegantly designed little product not only helps you with this problem, it also gives that old drive new purpose. It works on both IDE (old wide cables) and SATA (new little cables) drives, and lets you plug them into your USB port.

I always keep my old hard drives when I get a new machine, both for security reasons, and as backup, but then they changed the cables. This adapter not only lets you get your data off those old drives into your new computer, it also makes them into a better way to back up your data than DVDs, which I find unreliable, or the lesser capacity of flash drives. It supports the newer USB2 as well, so it works quickly (for USB).

Amazon has ‘em for $18.

Or you can go straight to Buy.com:

Cables Unlimited USB 2.0 to IDE & SATA Adapter Cable w/ Power

DIY Guitar Tuner

HackaDay has a fun little project up for those of you who play the guitar and have a do-it-yourself mentality. This little device can be used like a guitar pick. Using the buttons to select your note will cause the LEDs to flash at that frequency. The light will only be visible on the string when it’s in tune.

Or, for around ten bucks, you can save yourself some time and buy one pre-made.

Self Sharpening Pencil

This mechanical pencil from Japan has an internal gear system that automatically rotates the lead as you go, keeping it sharp at the tip. I’m he kind of person who will just walk into a pen store and spend fifteen minutes trying them all out to find the best ones. I can’t stand writing with those gummy-inked bic pens. that always leak, fail, and skip. It’s about time the rest of us started to appreciate quality again. It’s one of the things that made this country great. What we purchase makes a difference to what is made, who succeeds, and who does not. Buy quality. Buy Innovation. It will lead to more of the same.

This Kuru Toga pencil can be found at amazon

Upside Down Spray Bottle

Duh. I feel like an idiot. That is always a sign of a good post around here. This is one of those inventions you could have come up with using some junk lying around in the garage in a few minutes, but you didn’t. Neither did I. You know that stiff plastic tube in the spray bottle? Why is it stiff?

…

Yeah, I don’t know why either. This manufacurer has made a spray botlle with a very flexible tube, weighted at the bottom, so no matter what the orientation of the bottle, the tube is always where the liquid is at. That means no more running out of spray when you are trying to spray the underside of your plants. Do people really do that? For me it is always a problem when I’m trying to clean the ceiling of my microwave.

You can get one through Lee Valley.

Amazon has something similar as well.

(Via BoingBoingGadgets)

Electrically Conductive Wire Glue

If you ever have a delicate electrical project where you are afraid that the heat of soldering will damage tiny components or melt nearby materials, you should try out this electrically conductive Wire Glue. It isn’t terribly easy to work with, being runny and inflexible. but if you are in a delicate position, or you are trying to solder to things that solder just doesn’t like to stick to, it becomes an invaluable addition to any geek’s toolbox, and it is lead free.

Update: The stuff is water based, but after using it to glue together the leads for the under water portion of an electrolysis unit pulling around 80 volts, it has held up fine for weeks of under water load (as long as you let it fully cure first). It worked as advertised for our uses, but we haven’t tried replacing the ink in our inkjet and printing out a circuit board or anything. We leave that bit of fun to you.
The cheapest place I’ve found it is through ThinkGeek Gadgets

Amazon also carries Wire Glue, and it is still cheap enough you could just toss it on your next order and not feel like you spent anything.

Update: Chemtronics also has a line of electrically conductive epoxy and pens. After trying both in some pretty harsh and corrosive environments, I’ve found the Chemtronics stuff to be more durable. Amazon carries their stuff too.

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