Sunday, November 20, 2011

Baby Cribs and Baby Crib Accessories You Shouldn't Use

!±8± Baby Cribs and Baby Crib Accessories You Shouldn't Use

When you're shopping for essential items for your newborn baby it can be tempting to purchase every little thing that you see. However, there are many purchases related to your baby's crib and nursery that are totally unnecessary and even dangerous. When it comes to purchasing a crib, simple is always better. You may be attracted to beautiful cribs with all kinds of ornate details and scrollwork but infants and toddlers can strangle themselves within seconds if their clothing becomes caught. Someone in your family may also be encouraging you to use a crib that has been passed on through many generations. However, older crib models may not meet today's strict safety standards. Many experts recommend not using baby cribs produced before 2000. There should be a manufacture date printed somewhere on the crib which is required by law. If you can't find the date the crib is probably too old. You're better off purchasing a new crib if you're not sure about using a used crib. It's always better to be safe than sorry.

Sleep positioners should also not be used in your baby's crib. These devices are usually made of foam and are used to position babies so they can sleep on their back. However, child safety experts warn that use of these positioners can actually close off the child's air passages and cause suffocation, despite marketing claims that they actually help your infant sleep better. No tests have been done on these devices to prove they have any benefit so save your money.

Do not place soft bedding, blankets, stuffed animals, or pillows in your baby's crib. The only thing that should be in the crib besides your baby is a mattress, mattress pad, and a fitted sheet. The addition of soft bedding can increase the risk of suffocation. Instead of using a blanket it's usually better to dress your baby in a footed sleeper with light layers underneath. Wearable blankets are also available. Remember though, you don't want your baby to get too warm as this can also cause respiratory problems and stress. Crib bumpers are also generally not recommended. However, if you decide to use them, mesh bumpers are the best options as they still allow air to flow through all sides of the crib.


Baby Cribs and Baby Crib Accessories You Shouldn't Use

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Tuesday, November 8, 2011

Build Furniture Without a Woodworking Workshop

!±8± Build Furniture Without a Woodworking Workshop

When you get started in woodworking there are many paths to follow, forks in the road, dead-ends and shortcuts. It's a journey that our forebears would make with the help of a living, breathing guide: a master, a grandfather, a shop teacher.

Sadly, the guides are fewer in number today. And so you are left with people like me to help. Like the making of meat byproducts, it's not a pretty sight. Getting your woodworking instruction from books, magazines, television and an occasional class is a slow way to learn a complex task. In fact, many woodworkers spend a long time (years!) simply accumulating machines and tools before they ever build a single stick of furniture. And when they do begin to build, they inevitably discover that they actually need different machines and tools to make what they really want to make.

So they buy more tools and machines.

I want you to know something important that does not get said much: There is another way to begin building furniture. You don't need a table saw, a workbench or even a shop. You don't need to spend ,000 to build your first birdhouse. You can go to the home center in the morning and build something in the garage on the same day.

I'm not talking about building junk, either. The difference between a nice-looking set of bookshelves and a rude assemblage of 2x4s isn't a table saw. The difference is cleverness, sound design and just a wee bit of patience.

To build nice furniture you need three things: A handful of decent tools that you won't outgrow, some help getting started and some realistic projects to build.

The core of "I Can Do That" is a free 79-page manual you can download at popularwoodworking.com/icandothat that will help you choose all your tools and introduce you to the skills you need to cut wood and put the pieces together. The other essential component -- project plans -- can be found on many woodworking websites.

Eventually, we think you will outgrow this approach to construction as your skills improve. I bet you will want a table saw someday. And a drill press. And a smoothing plane. When that day comes, however, you will also have a house full of well-proportioned, well-built projects under your belt. You will be ready for those awesome tools, and the learning curve will be mercifully shorter.

If all this sounds like something that a bunch of idealists cooked up at a corporate strategy meeting, you're wrong. Though I had some carpentry training from my father and grandfather, I started building furniture on my back porch in Lexington KY, with a similar set of tools. Probably the only major difference is that I had a circular saw instead of a miter saw (at the time I did not know those existed). I built a lot of stuff with my simple setup -- some stuff we still have today and some stuff was long ago abandoned at the curb.

So this, dear readers, is a valid path.

My only regret in following it is that I wish that I had this manual (or a master woodworker) to make my journey easier.

Rules for Tools
I am not an emotional guy. I don't get nostalgic about high school, my first car or my first dog. I don't much hugs from family members at holiday gatherings. But I do have the deepest respect and affection for my tools. The care you give tools will gush readily into the things you build with them. None of the tools in the kit we recommend should be disposable; if you take good care of them, they will last.

First, take a look at the list of tools in the box on the previous page. You probably have at least a few of these tools already, even if you're an apartment dweller. The remainder can all be bought at any home center with a minimal investment. But before you rush out and spend your beer money, take a moment to read about my tool-buying philosophy.

You want to be careful when buying tools because these tools should last most of your lifetime. You won't replace these tools with fancy machinery when your skills advance, so you don't want to buy the cheapest tools on display in the tool crib.

So what's wrong with that jigsaw? Everything. Chances are the motor is underpowered, the bearings (if it even has bearings) are flimsy and the electronics are poorly insulated. Push the tool a little hard and it will -- no lie -- catch fire.

That said, you also want to avoid the tools that are loaded with lots of gizmos and features (with the price tag to match). In general, tools with lasers, bubble levels, wrist straps, micro-adjustable doo-dads and digital readouts are not necessary for accurate work. In fact, they might actually make life harder for you.

So I recommend you do two things. First, before you go shopping, visit toolseeker.com and browse around so you can see what brands and models are out there. Toolseeker.com also will help you figure out what to expect as far as price. Second, when you go shopping, seek out the brand-name tools, but choose a brand's stripped-down version of the tool.

Here's an example::Let's say you want to buy a random-orbit sander, and you like the Porter-Cable brand. The company offers the 343 model for and the 344 for . The more expensive model has variable speed. And while variable speed might sound helpful, it's not useful in a sander, really. Skip it and spend the on wood, glue or finish.

This philosophy extends to blades, bits and sandpaper. Buy brand names. Nothing is more expensive than cheap sandpaper, bargain blades or no-name drill bits. But don't buy the fancy professional accessories with plastic cases and flashy graphics. Flashy graphics are supposed to impress the guys on the job site. At home you will impress only the family dog.

Once you get your tools home, treat them like shards of the true cross. Never ever let your tools rust. Rust spreads like a cancer in ferrous materials (iron and steel) and can make your measuring and cutting tools difficult to use. There are a lot of products out there to prevent and remove rust, but the best thing going cannot be found on the shelf: a small can of vigilance.

When you are done with a tool, wipe down the metal surfaces -- especially the cutting surface -- with a rag that has been soaked with WD-40. Always keep the rag nearby (mine is seven years old) and renew it with a squirt of WD-40 when it gets dry. Wiping your tool down does two things: First, it removes dust from the tool. Dust can carry salt. Salt attracts water. The combination of salt and moisture will start breaking down your iron and steel tools.

Second, the WD-40 helps prevent rust by forming a thin protective barrier, albeit one that must be constantly renewed to be effective. Other people will disparage WD-40 (I once did). Ignore them.

Buying Materials
Another key component to the "I Can Do That" philosophy is that all the materials come from a home center. You don't have to buy your materials there, but you also don't have to trek out to some exotic hardwood supplier, learn the foreign language of lumber and spend a ridiculous sum on wood for a purpleheart planter box.

The truth is, you can build a lot of nice things with the run-of-the-mill (literally) lumber and plywood from a home center. You just have to learn how to shop for it.

Let's talk about home-center wood. In general, you are going to find lots of construction lumber -- white pine, yellow pine, Douglas fir and perhaps hemlock. This is sold in thicknesses best for construction 2x4s, 2x6s, 2x8s and so on. There are times you are going to want to pick through this stuff, but when you do, you need to know that it is usually too wet to be used immediately for furniture. If you buy construction lumber, take it home, crosscut it to rough length and let it dry out for a couple weekends before you dive in. You'll be glad you did.

In addition to construction lumber, you'll find hardwoods and softwoods that are thinner and designed to be used for trimwork in a house and even furniture. This stuff has been planed to 3/4" thick and is in convenient furniture-sized hunks. But you need to be quite wary of it. Why?

Well, first off, this stuff is far more expensive than wood will be at an old-fashioned lumberyard -- convenience costs, I tell you. And though it's quite expensive, the really flat and clear boards are just as overpriced as the warped, knotty and split ones.

So sort though the entire pile of wood when looking for boards. Yes, you might get dirty looks from the employees; but if you are going to pay for a pine 1x12, then by God you should get the best one in the store. When you are done, re-assemble the store's wood pile so it is better than you found it.

What sort of furniture woods are you going to find at the home center? For the most part, lots of pine, red oak, poplar, and sometimes maple and aspen. You can build a lot of nice stuff using this wood, especially if you are willing to paint your projects (we will talk about finishing next).

Also, don't forget to visit the moulding section of the home center. You can get away with a lot of store-bought moulding when building furniture -- you don't have to have a router. And the nice thing is that most stores sell the moulding by the linear foot, so you can cut what you need right there (and get some practice with a handsaw.)

As far as fasteners go, let me put one little bug in your ear. The worst thing you can do is to buy screws and other fasteners in those little boxes and plastic bags. You know, the ones that have five wood screws in them. Those are, for the most part, made from soft metal and cost too much. If I have to buy screws at a home center, I will buy a box of 100 or more that are intended for home builders. Heck, I would buy drywall screws before I would buy the little plastic baggies.

And as far as glues go, you're in luck. Home centers have a great selection of glue. Just don't buy the no-name stuff. It might be great. It might not. The name brands (Titebond, Probond, Gorilla) don't cost much more.

Finishing Materials
When it comes to finishing materials you are in tremendous luck when it comes to shopping at a home center. If you know what to look for you can achieve almost any kind of finish you desire.

First, let me say a word about paint. Don't let other magazines or woodworkers bully you out of using paint. A lot of excellent and well-made furniture is painted (for example, virtually every Windsor chair ever made). Personally, I love paint on certain pieces. It allows the graphic lines of a project to really stand out. Paint allows you to easily get the color exactly like you want it. And it's a finish that is hard to mess up. In general, I find that latex semi-gloss paint works very well for furniture. It's durable, doesn't stink up the house like oil-based paint and is easy to clean up.

But what if you don't like paint? Again, you're in luck. Home centers carry a wide variety of stains. And here's a trick that you don't hear a lot: You can mix two (or three or more) stains to get the color you are looking for. Just be sure to mix oil-based stain with oil-based stain, and water-based with water-based.

And while we are talking stains, I recommend you avoid the products that both stain and protect your project. These "one-step" products are usually just stains with a little more binder material in them. They offer little protection to your project, and I don't think they look good, either.

Instead, you should protect your wood with some sort of film finish. In general, you are going to find three sorts of products at the home center that will do this.

There will be Watco, Danish oil and tung oil. These usually are a blend of boiled linseed oil and varnish. It's OK stuff, but you need four or five coats to build up a nice film.

You'll find lots of polyurethane. In general, I think polyurethane is harder than necessary; plus, it doesn't bond well to itself. So sometimes a coat can flake off. If you use polyurethane, be sure to sand the finish thoroughly between coats with #320-grit sandpaper or sanding sponges.

You'll also find varnish or spar varnish. This is the good stuff. It's a lot like polyurethane, except it's a bit softer and bonds more easily to itself. Buy a can of varnish and a can of paint thinner/mineral spirits (they are the same thing). Thin your varnish with three parts varnish and one part paint thinner and you can then apply a nice thin coat with a rag. After three coats or so, you'll build up a nice sheen. Just be sure to sand your finish between coats.

Finally, get some paste wax and some way to apply it. I like the fine synthetic steel wool, which is a gray pad. The gray pad will smooth your finish to the touch and the wax will give the whole project a nice consistent sheen.

Don't Forget Your Workmate
The last important piece of your toolkit is a Workmate. This is a portable workbench that you will never outgrow, even if you become obsessed with workbenches, build 10 of them and write a book about it.

The Workmate is one of the greatest woodworking inventions of the 20th century. It's a big vise, a worktable, a clamping surface, a stepstool. With a Workmate, you can work almost anywhere in the house or yard.

When you buy one, get the nicest one in the store (I know that this contradicts my earlier advice on tools). The plastic ones are not so nice. In fact, the best way to buy a Workmate it to pick up an old one from a garage sale. My Jimmy Carter-era one cost me and even included the plastic dogs, which are great for holding panels.

Now Get to Work
Once you buy your tools, pick out a project and get your materials, you should dive immediately into the project. No matter how daunting the joinery journey ahead, I promise you that most of the barriers in woodworking are mental. The first step is always the hardest, and that's true when it comes to cutting your first pocket-screw hole or sand-shading your first piece of inlay.

'I Can Do That' Tool List
The foundation of the "I Can Do That" approach is the small number of tools you need to build nice and sturdy furniture. Here's a list of the basic kit.

- 12" combination square
- 16' tape measure
- jigsaw
- 10" miter saw
- 7 1/4" circular saw
- electric drill
- scratch awl and brad awl
- bastard-cut file
- file card
- palm-grip random-orbit sander
- block plane
- combination oilstone
- pocket-hole jig or a biscuit joiner
- 16 oz. hammer
- nail sets
- 4-in-1 screwdriver
- Workmate
- F-style clamps


Build Furniture Without a Woodworking Workshop

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Tuesday, November 1, 2011

Impact Resistance Test in Home Furniture

!±8± Impact Resistance Test in Home Furniture

Impact tests are those that assess the strength of the cabinet against the occasional impact that will happen during its lifetime.

HEIGHT IMPACT

Before determining the impact point is placed a sheet of foam, from which we determine the drop height of the impactor. Then, place a second sheet of foam.

The test method is performed according to the following process: first determine the loading point of the seat (point on the seat in the vertical center of mass of the user's mass) then place a sheet of foam to determine the drop from of it until the impactor, then place a second sheet of foam between the first and the impactor and finally dropped freely impactor with a mass of 25 kg. This process is repeated 10 times and any other position that is considered of importance. If it is a product intended to be used by more than one person, try a square from one end and a central place.

A test which simulates the same is based on American standards ANSI / BIFMA: the test procedure is to drop freely a mass of 102 kg that hits the seat from a fixed height of 152 mm measured from the uncompressed seat to the base of the bag. After it, the test is repeated, this time with a bag loaded with 136 Kg. After the first impact of the seat, it must to be fully operational and after the second must have been produced no sharp breaks.

HEADS RESISTANCE TESTS

Impactor is situated to the starting position of test and control the test parameters, such as time between impact and stop in case of breakage.

Another way to test the seams and seat structure is applying energy from impact test on backrests and armrests. To test is essential to block the movement of the seat sliding and impact in the center of the upper back (or at the rear edge of the seat if it is backless chairs) or on the side of the armrest in the position considered most unfavorable. A total of 10 impacts at each element, from the outside in, with the impact hammer, that consists of a cylindrical head of 6.5 kg mass attached to a steel tube 38 mm in diameter with a thickness of 2 mm and a length of 1 m to the low friction joint. The angle of fall of the hammer to the achievement of impact varies between 38 º and 68 º depending on its intended use the seat.

TABLE IMPACT TEST

In the studies of impacts on tables is turned on the strength of the table to occasional impact when placing things on top of it. The test consists of dropping the impactor freely over the top of the table 10 times, following the same steps that in the case of impacts on the seats of the chairs. The drop height varies between 180 and 240 mm, in the case of tables with glass top security than the drop height varies between 240 and 300 mm, in this case, instead of using two layers of polyether 25 mm thick, using a polyether foam 100 mm thick.

BATHROOM AND KITCHEN FURNITURE IMPACT TEST

It determines the resistance to hard charges located on the drawers of kitchen and bathroom. The test consists of dropping a steel ball of 42.8 mm diameter and a mass of 324 g from a height of 600 mm above the bottom of the drawer when the drawer is 2 / 3 of its total opening. At the end of the test evaluates the possible flaws that affect the mechanical strength or functionality. The fronts of the kitchen and bathroom cabinets (doors and drawers) are impacting the central part of himself with a leather ball with a diameter of 200 mm and a mass of 5 kg from a height of 500 mm. In the case of lower cabinets with doors, are tested after being closed and opened 45 degrees and found that there are no breakages and that the elements continue to function correctly.

TEST IMPACTS ON CHILDREN'S FURNITURE

The impact tests on children and juvenile furniture ensure durability of the model at such issues as the base (cribs), trays (chairs), mattress, safety barriers, etc.., Special mention by the type of furniture and what type of audience that will be use it, where any defect in design or accidental breakage of any component can cause a serious accident.

Test consists on impacts on both the mattress and in the barrier. The base of the cradle hits a thousand times in each of the six points identified by the European Standard. Its dropped freely and avoid the impactor rebounds (10 kg device with a tip mass in the opposite hemisphere and a guide to maintain the vertical and secure the point of impact) from a height of 150 mm between the base and the impactor is placed a cushion with a density test (35 + 2) kg / m3 and a thickness of 60 mm, dismissing every 5 completed trials.

To test the resistance of the head and sides of the cribs, the impactor is placed lateral (pendulum of steel cylindrical head covered with a layer of rubber 10 mm thickness and a hardness between 76 IRHD and 78 IRHD with a total mass of 2 Kg) ready to hit the crossbar or side 10 times from outside and the next rung 10 times from inside to hit all the bars (or all points determined whether it is solid side). The impact is made on a point at a height of 200 mm below the top edge of the side, dropping freely side impact from a horizontal position. Each and every one of the corners of the cribs are impacting five times inside and five on the outside as close as possible to the top edge impactor dropping freely from a 60-degree angle.

Berths are also tested by impacts. The bases are tested on the two beds and the steps of the staircase to the upper bed. The impacts on the bunk bed frame are made on seven points from a height of 180 mm measured from the top of the mattress test (in this case, with a density of (30 + 2) kg / m3 and 100 mm thick ). The impact on the steps of the staircase leading to the upper bed is performed ten times in each of the following: on the steps above, below and you're closer to the center, hitting the center and as close to one side as possible, is dropped from 150 mm impactor (consisting of a bar of 1400 mm, which places a mass of 15 kg, finished in a steel plate of 100 * 100 * 6 mm).


Impact Resistance Test in Home Furniture

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