And please spread the word if you like what you see here. Thank you!
A Look at the Proxxon Motorized Angle Polisher
Last issue, I wrote about Adam Savage restoring the yellowed plastic cover of a vintage Nagra IV-S audio recorder. He ended up using a combination of a 12% hydrogen-peroxide bath and stages of a polishing compound to bring the cover back to its former glory. In this video, he talks about the Proxxon motorized angle polisher he uses while restoring the faded and scratched plastic dome on a spacesuit helmet replica and extolling the virtues of the tool.
Paint Coatings: The Great Weapon Against Rust
Grady of the fantastic Practical Engineering channel continues his series on corrosion engineering by looking at one of the great weapons wielded in the war against steel rust: paint (or more accurately paint coatings).
Next-Level Oscillating Multi-Tool Tips
Wow. James of Stumpy Nubs always brings the goods, but I learned so much from this video on improving one’s use of an oscillating multi-tool. I just recently bought my first cheap oscillating tool (to see how I like it) and am just beginning to learn how to use it properly. Even if you’ve had an oscillating tool for a while, I bet you’ll learn something here. How to angle your plunge cuts, pre-scoring cuts, holding onto the blade for better control (yes, it’s safe), using semi-circular blades for making straighter lines, so much more. Lots of tips for cutting metal with an oscillator, too. And, James has a good recommendation for an inexpensive blade assortment.
Quick ‘N Dirty Aluminum Casting
In this Daniel LupienYouTube short, he shows you how easy it is to create a simple sand mold and cast it in aluminum. All you basically need is a chunk of aluminum, a crucible and tongs, a source of heat, some kinetic sand (or regular casting sand), and something to press into the sand to create the mold.
No-Cost Stud Finder
When my wife and I moved to our new digs in Benicia, CA last fall, I needed to install a swivel-arm wall mount for our TV. I simply used a 1″ disk magnet I had on-hand to locate the stud. No fancy stud finder needed. In this Becky Stern tip, she shows the method of using a string and a magnet. Easy peasy. If you’re uncomfortable with this method and want to make sure to find the center of the stud and locate (and steer clear of) any wire runs, pipes, etc., sophisticated imaging scanners can be had for under $30.
Fixing a Leaky Faucet with a Ten Dollar Tool
We know that professional plumbing doesn’t come cheap. Doing your own basic maintenance and repairs may seem intimidating, but it shouldn’t. Jobs like clearing a trap, changing a toilet float assembly, or replacing faucet washers are relatively simple and easy. Years ago, I changed a toilet float kit. It was easy (after getting the very frozen-in old assembly out). And, I felt like I’d accomplished something and saved myself over $100. The replacement kit was $15.
Mark Frauenfelder of Cool Tools recently replaced the rubber washer in his shower. He writes in Recomendo: “Our shower head was leaking, even after I replaced the rubber washer. YouTube informed me that I had a scarred valve seat, which is the brass ring that’s supposed to form a tight seal against the washer. I bought a reseating tool for about $10 on Amazon, which smooths the surface of the valve seat. It worked, and saved me a $150 plumber visit.”
Notable Quotables
“Move carefully and fix things.” -Civic technologist, Bill Hunt
“Read your fear as excitement.” -Author and public speaking guru Scott Birkin [Said about public speaking, but applicable to many other, similar situations.]
Shop Talk
Reader Art Elliott shares this tip:
“My fav pencil is the tri-conderoga. It’s the best of both worlds. Three sided, so it doesn’t roll away, and thinner than a regular carpenters pencil, so you get sharper lines, but it’s also thicker than a regular pencil, so the lines are still nice and thick. My family got me a pack for Father’s Day and they’re my go-to in the garage.”
***
On the issue of CA glue curing accelerated by water or baking soda or baking soda and water, reader Josh Martin writes:
“Setting CA glue with water makes an inconsistent, often crumbly consistency to the set glue. Baking soda improves on this, but nothing works as well as accelerator (or just time).”
In reference to storing CA glue in the freezer, reader KX4WD enthuses:
“The money I could have saved on super glues over the years with this storage tip!”
Become a Patron!Support our reviews, videos, and podcasts on Patreon!
Cool tools really work.
A cool tool can be any book, gadget, software, video, map, hardware, material, or website that is tried and true. All reviews on this site are written by readers who have actually used the tool and others like it. Items can be either old or new as long as they are wonderful. We post things we like and ignore the rest. Suggestions for tools much better than what is recommended here are always wanted.
Sugru is a soft moldable material that reminds me of Fimo clay. But unlike Fimo, it does not have to be heated to cure. It air drys and is rubbery and sticks to anything. I used it to make a new button for my utility knife when the plastic one broke. I made bumpers for my cell phone. I put some on my tools so they would not roll off the table. I am still discovering ways to use the product. — Philip Lipton
This stuff comes in tiny pouches of different primary colors. You knead a bit with your hands until soft, then you apply it where you would like an additional grip, or stop, or section of repair. It’s pretty sticky, can be worked like clay, but dries into a hard rubber. The photo shows a paring knife handle that was falling apart from years of dishwasher use. I coated the outside with Sugru and it now it feels great and is dishwasher proof. See Sugru’s website for other ways it can be used. — KK
Artists know about this stuff. It’s flexible polymer clay that hardens into rigid plastic after a spell in your kitchen oven. Bright steadfast colors. Or you can paint, drill, and polish it. Great for making toys, models, small sculptures, modern jewelry, and weird stuff — anything that demands that colored plastic look. SuperSculpey is a translucent beige-colored (skin like) variety sold in bulk that dollmakers and Hollywood special effects swear by. Most good art suppliers will stock it. — KK
A few weeks ago, my 11-year old son and I decided to sculpt, so we got out SuperSculpey Firm polymer clay. After working with this newer style of Sculpey for a while, we decided it totally kicks ass on softer styles of Sculpey. Why? Because it doesn’t flop over on its side when handled. And it’s firm enough to keep its shape when carved. My son began making a tank. So I made a tank. We have yet to paint them.
The Sculpey brands are especially encouraging for beginners, yet professionals artists depend on them as well. Pros ranging from vinyl toy artists to designers for film use it. Unlike normal clay, Sculpey hardly changes shape or size when baked, and hardening takes place quickly, at the relatively low temperatures of a convection oven (even a toaster oven will do).
Because of its polymer base, there’s loads of fun techniques to try with Sculpey: like baking your sculpture for only half the allotted time. When you take it out of the oven, prematurely, you’ll find your little masterpiece has a soft, rubbery texture. In this state, it won’t lose its shape and can be easily carved with a knife or a file. Have you cut too much away? Add a little more Sculpey and put it back in the oven, for more cooking! — Robyn Miller
Precious Metal Clay lets you make fine jewelry with little experience or equipment. It works like Fimo clay, except it is more crumbly because it contains powdered precious metal, such as silver, or gold. (It will also dry out faster.) The organic clay binding burns off when you fire it and you end up with pure fine silver or gold in the shape of the clay you made. If you have jewelry skills you can keep working it from there, soldering, shaping, etc.. Since I don’t have much skill I just polish up my pieces or antique them with silver black. There’s an implication that you have to fire PMC pieces in a kiln (that would be nice), but so far everything I’ve done I’ve fired myself on the kitchen floor with a basic propane torch.
All PMC shrinks significantly when fired. However since the shrinkage is proportional, jewelers use this shrinkage to produce very fine detail that would be difficult if you had to work at full size. PMC comes in various formulations with different shrinkage rates. The original PMC shrinks 30%, while PMC+ and PMC3 shrinks only 10%. (I’ve never tried using the torch on anything except silver PMC+ and PMC3 because I prefer the lower shrinkage of these.)
My one piece of advice about firing PMC with a propane torch: This stuff is very expensive (it’s silver or gold, remember!) so take a small piece and sacrifice it to learn how to heat evenly first. It is very easy to overheat it which will melt the silver into a blob., which is bad. If you aren’t sure if it’s metal yet (it’ll be whitish), pick it up with needle nose plier and drop it very gently on the metal surface you fired it on. It should make a satisfying metal-on-metal thunk. When I am feeling more flush, I’ll find out if gold PMC can be fired this way. — Quinn Norton
Shapelock is “Ultra-High Molecular Weight Low Temperature Thermoplastic. Similar to nylon and polypropylene in toughness., except it’s easy to work with and shape.”
You get a bag of plastic pellets, put them in 160F water, and they phase change, becoming soft and moldable. If you don’t let the water get too hot, when you take the plastic out, it’s cool enough to shape with your hands.
When it cools down, it hardens into a strong, durable, paintable, machine-able white plastic. If you don’t like what you made, you just put it in 160F water again and reshape it.
Great for making prototypes — also fun to play with. The same stuff, under a different name (Friendly Plastic), is available in larger quantities, at a slightly cheaper rate. — Patrick Tufts
