Soda bottle rockets

Most people are familiar with model rockets, but here I have made a "rocket" out of an ordinary 2-liter soda bottle, and the "launch pad" is constructed out of PVC pipe. The "fuel" is air and water.

To make the launch pad, I used a 5' length of 1/2" PVC water pipe. I cut two 11" lengths which were glued into a slip/threaded T connector. One end was capped, while the other end was capped with a cap where a hole was drilled and a universal valve stem was inserted through the hole.

A threaded connector was screwed into the T connector, and I glued a 32" length of pipe into that. A 90 degree elbow connector was glued onto the open end, and the remaining 6" length of pipe was inserted into the elbow. At the end of the 6" piece, another male threaded connector was glued on, and the threads were wrapped a few times with electrical tape, just enough to make a tight seal when the 2-liter bottle is placed over the top. Test fit a soda bottle over the end to see if you have the right amount of tape.

To launch the rocket, a soda bottle is filled about 1/3 full of water. (Too much water will make the rocket too heavy to go high, while not enough water will prevent it from building up enough pressure.) Invert the bottle and quickly put it over the taped end, twisting it in the direction of the tape to ensure a good seal. (If you twist it the opposite way of the tape, you could cause the tape to loosen up and come off.) Use a bicycle pump attached to the valve to pump air into the system until enough pressure is built up and the rocket launches into the air. By using an automatic friction release, we won't end up putting so much air into the system that the bottle might explode before launch.

I spent about $3 at Lowe's on the PVC pipe and components, and an additional $3 at an auto parts store for a pair of valve stems. I had to purchase more PVC glue for about $4 because I had run out. (I still had a bottle of PVC cleaner.)

So, the total cost in materials was about $10. My kids spent the entire afternoon launching soda bottles into the air, so it was well worth it.

How to make a birdfeeder

This is a fairly easy project for making a birdfeeder from a plastic milk jug or juice bottle. This can be used toward Tiger elective 32, Wolf achievement 5e, Wolf elective 13, Bear achievement 5b, or the Webelos Craftsman activity pin (which could also be helpful for completing the Naturalist activity pin).

To make this, you will need a plastic milk jug or juice bottle (with the cap!), a drill, a utility knife (or a hobby knife or good scissors), a hot glue gun, a 5/8" dowel (approximately 12" long, depending on the size of the jug or bottle), and waterproof rope. Optionally, you will need permanent markers or waterproof paints to decorate the birdfeeder once you are done.

First, thoroughly clean the jug and soak it in hot water to remove any labels. Then dry it off.

Next, use the drill to make a small hole in one of the side panels. Use your knife or scissors to cut out an opening so the birds can get in and out. Make sure the bottom of the opening is high enough so that there will be room at the bottom of the jug for plenty of food. Otherwise, you will have to refill the birdfeeder frequently. Depending on the shape of the jug, make a second opening on either the adjacent side or the opposite side.

Drill a 5/8" hole below each of the openings, then slide the wooden dowel through. Use the hot glue gun to seal around the edges where the dowel pokes through the jug.

Drill two holes at the top of the jug, big enough for the rope to fit through. Feed the rope through the holes.

Optionally, you can decorate the birdfeeder with some bright colors to help attract the birds. At the very least, you should paint the wooden perch to help protect it from the weather.

Hang the birdfeeder about 4' to 6' above the ground. Try to pick a place that birds would consider "safe". Hopefully, birds will spot your birdfeeder, and you should have regular visitors after a few days.

No-mess model rocket painting

If your son is like mine, painting a model rocket can be a messy proposition. If he holds the rocket with one hand while he paints with the other, he will inevitably get paint all over his hands.

To keep his hands from getting messy, you will need a metal coat hanger. These can be found at dollar stores in packs of 10 or 12. Take the triangular portion of the coat hanger and pull the neck away from the long, straight end, thus turning the triangle into a square. Beck the neck at a 90 degree angle, perpindicular to the square. Straighten out the neck and bend it into a zig-zag shape.

Your son can now slide the launch lug (the part that looks like a small piece from a drinking straw) over the open end of the hangar, and the entire assembly can be set down on a table. You should still lay out some newspapers to catch drips, but at least the paint won't be all over his hands!

Birdwatching update

Today, I saw a red-winged blackbird eating from our birdfeeder. That's the first one of those I've seen all spring, and it's also the first bird other than a sparrow that I've seen at the feeder.

So far this year, I've seen many different birds in my neighborhood. I've seen house sparrows, red-winged blackbirds, mourning doves, crows, robins, Canadian geese, cardinals, northern mockingbirds, starlings, and red-tailed hawks. Not too far from my house, I've seen blue jays, mallards, and wild turkeys.

When you stop and take the time to look around, you will find that there are many different types of birds in your area.

It's a bird! It's a plane! It's... no, wait, it's a bird!

Over the past few years, we've seen plenty of birds in our yard. We have robins that like to make nests under our deck, and I've seen plenty of house sparrows, red-winged blackbirds, and other species that I am not so sure of.

A few weeks ago, my kids and I constructed a birdfeeder from a plastic juice jug and hung it in a cherry blossom tree in the front yard. We were hoping it would attract birds not only to the feeder, but to a birdhouse that we hung in the same tree. So far, the feeder has been dominated by the house sparrows, and we've been able to get some close-up looks at them (both male and female varieties) out of our living room, as the feeder is only a few feet away from a window. (A feeding sparrow can be seen in the picture at the upper left. This is the view as you look out the window, although the camera gets obscured/confused by the mesh screen.) So far, still no takers on the birdhouse.

As the temperatures finally start to warm up in Rochester, I'm starting to see some new species arrive. Until recently, all I've seen in my yard have been the robins and house sparrows. Lately, I've been seeing something in my neighborhood that looks similar to the house sparrow -- possibly a fox sparrow? This morning, I saw a pair of northern mockingbirds in my front yard, with one coming very close to a window so I could get a good look at it.

For help on identifying birds, I suggest trying whatbird.com or Scotts bird identifier. (Yes, that's the same company that makes all the grass seed and fertilizier.) It is important to make note of as many details as you can before you rush off to try to identify it. If you keep track of its size, coloring, beak shape, etc., your ability to identify it will greatly increase.

Potato prints

This is an easy craft for kids of any age, although younger kids may need some assistance from a grown-up because a knife is involved.

Take a potato and cut it in half using a straight blade, such as a paring knife or pocketknife. Don't use a serrated blade because it will make a wavy surface, and you won't get good prints from your potato. Blot the two halves on a piece of paper towel.

Take a nail or other sharp implement and scratch the outline of your design into the flat (cut) side of the potato. If you are planning to make a letter or number, remember to make your design backward so that it will print out correctly! Carefully use a paring knife or pocketknife to trim away the areas outside of your design.

Once your potato stencil is ready, press it firmly into an ink pad, then onto a piece of paper. Depending on how fresh your ink pad is, you can probably get two or three good prints before you need to re-ink your potato.

Leader awards

Kids aren't the only ones working on some sort of badge for their uniform. Yes, leaders can earn awards, too. It's nice to receive recognition for the time you put into Scouting. I recently earned my fourth Boy Scout square knot award -- the Cub Scouter award (pictured at the top).

The first two square knot awards I earned, I actually earned when I was a Cub Scout. Way back when I was in Pack 3, Den 2, I earned the religious emblem for Cub Scouts and the Arrow of Light. As an adult, I am entitled to wear the square knot emblems corresponding to those achievements (bottom left and bottom middle). Two years ago, I earned the Cubmaster Award (bottom right) for being fully trained at my position and completing several other activities related to the award. At this month's roundtable, I received my Cub Scouter Award for completing additional activities at my position.

If you are a leader and would like to work on an award, you can check out the different awards and their requirements at www.boyscouttrail.com/square-knots.asp.