David L. Farquhar on technology old and new, computer security, and more
In metallurgy, zinc pest is a problem that occurs when impurities are introduced in the process of diecasting. The problem causes the metal to crack and disintegrate, in extreme cases crumbling to dust. It mostly affects products made in the 1920s-1950s.
Zinc pest or zinc rot was discovered in 1923 and well understood by the 1930s. It is relatively uncommon today, but can still occur due to sloppy manufacturing processes.
I had an old Formica backsplash, original to my house. It was still in good condition, but I’m not sure it looked good in 1965, let alone now. I wanted to replace it with tile but didn’t relish the $700 expense. What if I could lay tile right over Formica or other laminates? Here’s how to tile over Formica backsplash.
Tile mastic doesn’t stick well to Formica and other laminates, and the manufacturers won’t warranty it if you try. The most cost-effective solution in terms of time and money is a peel-and-stick product. As long as your existing backsplash is in good condition, it’s a good candidate for this.
WD-40 has a number of uses around the house. It’s been a longtime tinkerer’s favorite for a reason. But it may also be one of the most frequently misused household chemicals. So here’s what WD-40 is used for, and best not used for.
WD-40’s main uses are protecting metals from water, as a penetrating oil to loosen stuck parts, and even as a cleaner. It is not, however, a very effective general purpose lubricant.
I thought the debate ended when the file format went obsolete, but then GIF came back as an animated file format. And with it came the argument of how to pronounce GIF. Is it JIF or GIF?
Steve Wilhite, the inventor of the file format, pronounced it JIF, and in the 80s, so did just about everyone else. In the mid 90s, pronouncing it like GIFT without the “T” became common, the logic being that the “G” stands for “Graphics,” not “Jraphics.”
If you’re hanging something heavy like a cabinet or a shelf and want it to stay on the wall, you need to attach it to a wall stud. Otherwise it’s liable to pull out, damaging your drywall in the process, and possibly causing other damage too. So here’s how to find a stud in the wall.
The most common method is to use a tool, which costs around $20. But even without a tool, with a little practice you can use visual or audio clues to find a stud in the wall.
The Liberty Falls Collection was a collectible holiday village popular in the 1990s. The product was produced in China and sold in the United States in large department stores. It was on the market from 1991 to 2008.
The Liberty Falls Collection is a bit obscure today, but it isn’t especially rare. Purchasers frequently packed the items away in the original boxes every year, so when they turn up, they often turn up in like-new condition.
As a landlord, one common thing I run into when rehabbing a house is questionable pantries. You don’ t have to use expensive wood for pantry shelves, but if you use the wrong lumber, or the wrong design, you can end up with a shelf crashing down. And that’s no good.
You can use nominal one-inch pine boards for pantry shelves, or 1/2 inch plywood, as long as you don’t make it excessively long. Particle board and OSB are not ideal, and reinforcement on all four sides is absolutely necessary with those. Pantry shelves need to be fairly strong, as canned goods can be fairly heavy. Having lots of pantry storage so you can take advantage of sales is one of the best reasons to have a house. So you want to make sure the pantry is put together pretty well. Read more
Laminate countertops are inexpensive and easier to work with than stone. But the cheapest places to get laminate countertops often only offer fixed sizes and won’t cut them for you. So here’s the best way to cut laminate countertop so you can install it yourself and avoid custom orders.
The key to cutting laminate countertop is a straight edge, a fine-tooth sawblade, and lots of support. The most common reason for difficulty cutting laminate countertop is lack of support causing the countertop to pinch your blade.
What is pot metal? It’s a catch-all phrase that covers casting parts out of nonferrous metals. Usually when the phrase is used, it refers to pieces of unknown or possibly questionable manufacture. But there are sophisticated processes, such as diecasting, that fall into the category of pot metal.
Pot metal originated from the practice of gathering all available nonferrous metals and melting them into a pot for casting. Any process that involves casting nonferrous metals is technically pot metal, though the phrase usually refers to a more haphazard composition. Outside of prototyping, it is still used for making toys, trinkets, cheap jewelry, and even hardware.
Lionel trains have a reputation for high quality, but like any machine, you have to take care of them. Here’s how to maintain Lionel trains to ensure they last another generation or two.
Even if you run your trains a lot, your trains should only need maintenance every few years. For about $30-$35 worth of materials, you can ensure your Lionel trains have a long, productive life.