Tuesday, September 7, 2010

Making a Jacob's Ladder

I saw my first Jacob's Ladder when I was in the 2nd Grade. I was fascinated as it looked like one block of wood was tumbling down through the others to the bottom. The fact that you could do it again and again without reloading or resetting it in any way was just amazing. It seems like an illusion or a Junior Jedi mind trick, but it really has to do with each piece being doubled hinged. As with most classic folk toys, it is pretty simple to make from some easy to find materials.

Without writing a book, just a couple of historical notes: First off, the name Jacob's Ladder is a Bible reference. In the Book of Genesis, Jacob had a dream where he could see Angels ascending and descending a ladder between Heaven and Earth. The phrase has been used for all sorts of things over the years from rope ladders on ships to plants to this wicked cool toy. Secondly, as to stories that it was found in King Tut's Tomb and was one of the only toys Puritan children were allowed to play with on Sundays... well, I think those are good stories and let's just leave it at that.

I first saw how to build one of these in John R. Nelson, Jr's fantastic book American Folk Toys. Over time, I've changed it a bit to match my tastes and what materials I have on hand or have been given (- thanks Jeff) but that doesn't take anything away from the Mr Nelson's indispensable classic.


I started by ripping 2" wide strips of 5/16" thick wine crate wood. (I know, 5/16"??!! Well, it is probably metric and is "actually" 8mm thick.) Nelson's plans call for 3/8" thick wood and I have often used 1/4" because it is so easy to find. Basically, anything in that range is going to work for you. And oh yeah, if have a bandsaw but don't have a rip fence... go out and get yourself one. You'll thank me later.

Next crosscut your 2" wide strips into 3 1/2" lengths. You'll need six of these. Although you could make it longer, don't forget kids will be playing with this and you don't want to make it too heavy or unwieldy. Sand any rough spots.

Okay, let's start building. Put your first piece down and then take three strips of 2' long by 1/2" wide bias tape. It is used in sewing and is easy to find at any fabric or craft store. I like using different colors for the tape on this. You could also use sturdy cloth ribbon if you prefer. The green tapes run left to right (you can see the starting ends hanging over the side); the white tape runs right to left (it has its starting end hanging over the right side. You can see that better in the next photo.)


Next place a block over top of the first block. This will sandwich the tapes between the two blocks.

Pull the tapes back across the second block. The white tape now runs left to right and the green tapes right to left. Now just alternate adding blocks and loosely weaving the tapes back and forth in the same manner until you add your last block. When you get to the last block, don't wrap the ribbons across the face of the block, just leave enough for the tapes to hang over the edges, just like with your first block.

With all the blocks in place and the ribbons laced through the toy, clamp the block together so that it will be easy to work with. This will help keep everything lined up properly for the next step. (The other side of the block has the exact opposite pattern of ribbons.)

I use 1/2" long little nails to secure the tapes to the ends of the block. Two nails for each ribbon. Brass/Zinc nails with a little rounded head work well and look nice. Stay away from headless brads though. (Headless Brad? Wasn't he a character in an 80's slasher movie?) If a nail gives you a tough time and won't go in straight, take it out and try a different one. Also, once you have a nail lined up and started, don't be afraid to sink it with a few firm hits rather than trying to gently tap it in. You are more likely to bend a nail with a lot of little taps.


Other times I've built this toy (especially when I used 1/4" wood) I've marked and pre-drilled very small pilot holes in the ends of the wood before I threaded the bias tape. You can do that, but trying to line up the little nails through the tape and into the holes wasn't a huge advantage over just putting the nails in directly. The nails are so tiny, I haven't had any issues with the wood splitting. Just be sure to keep them clear of the edges as you nail them in.

After you finish all 36 nails, trim off the excess ribbon and you are all set.

Playing with the toy is very simple. Just hold the long sides of one of the blocks and let the rest of the blocks hang down. Now rotate your hand down on the side that has ribbon showing. The next block will seem to tumble away. Now just rotate your hand back the other direction and the tumbling action will happen again.


With a little bit of practice you can get two blocks cascading at the same time. Which looks pretty neat.

I've left most of mine in natural wood but you can also paint them in bright colors and give them a protective finish. You can make one of these in under an hour. They make great gift and they really last. I made my first one almost 10 years ago and it is still going strong.

Wednesday, August 25, 2010

Making a Spool Racer (aka Spooldozer!)

Growing up in the DC area, I used to spend a fair amount of my time watching Channel 20. By "fair", I pretty much mean every waking moment.


Afternoons, in between Captain 20's gerbil races and "Banana Splits" episodes, Channel 20 would run Jhoon Rhee commercials and some odd little 30 second to 1 minute long "how to" films for kids. One of them that really stuck with me was "The Spooldozer."


Maybe it was that I still had "Killdozer" on the brain, but something about the Spooldozer spot really grabbed me. Basically, it is just an old folk toy that usually gets called a "Spool Racer" or a "Spool Tractor." There are a lot of variations of this simple toy and it really only takes a minute to put together. So let's make one.


  You'll need
  A wooden spool
  A rubber band
  A push pin
  A short piece of dowel or a pencil
  A washer or any small disk to sit between the dowel and the spool.




Thread one end of the rubber band through the hole in the center of the spool. I find that using an un-bent (de-bent? re-bent? un-bendified?) paperclip with the end as a hook works well. Just fish it through and pull the edge of the rubber band through. Secure it with the push pin.






Now, working on the other side of the spool, thread the rubber band through the washer (in this case a 1" toy wheel I happened to have around) and then over the dowel. The washer can be made of anything and greatly reduces friction.


I used a 4 1/2" piece of 3/16" dowel, but you could use anything from a pencil to a chopstick for this. Have the front of the stick be about flush with the front of the spool.






So here is the finished push pin side:


The finished washer/lever side.



The completed Spooldozer

Now here is the scary part... you're done. Seriously, it is time to start playing with it. Just wind the dowel clockwise a few dozen times until it starts to get tight and then set it down and let it go.






Now a few things to keep in mind (and dare I say... ponder...)

  • The weight and length of the dowel/pencil will impact how fast and straight the toy will run.
  • It gets better traction on carpet than wood. On wood it tends to spin in place if it has wound up too much. (No doubt there is a physics lesson in here somewhere...)
  • Small rubber bands can be placed around the ends of the spool to improve traction.
  • Remember though, kids don't mind if it spins out and acts all crazy. It is a toy.
So there you go. About as simple as it gets.

You know... maybe this is too simple. A wise crustacean I used to work with operated under a guiding principle that stated -"Why make it simple, when you can make it complex."

Let's just say, with a little bit of wood from, ummm, maybe a clementine box, and a lot of time, a more complicated version can be made. However, that is for a different day and a separate posting.

Tuesday, July 20, 2010

Making a Toy Helicopter out of Coffee Stirrers

I drink my coffee black. True, there are times I feel that I'm missing out on a whole world of fun and flavor. On the other hand, my coffee is always the way I like it. That tradeoff seems worth it. Anyway, The other day at work, I'm heating up my 37th or 38th cup of the morning in our office kitchenette when I looked over at the pile of coffee adulterates next to the sink. Next to the four kinds of artificial sweeteners (what a country!) there was a cup full of wood coffee stirrers. "Hmmmm, free wood..." I think to myself.

Well, I'm pretty sure you are familiar with these little guys. Most people think their use is limited to stirring beverages and making the occasional scaled down popsicle-stick pagoda. Well, most people aren't insanely cheap, toy obsessed, perpetual 12 year old boys. I, however, am.

Honestly, I think the stirrers are made from wood that doesn't quite make the cut for toothpicks or matchsticks. They aren't real uniform or strong but they are plentiful. Their quantity is their quality. Holding a few of the stirrers in my hand I fanned them out and started thinking about some possibilities. I looked at them from the side and the idea of a propeller immediately came to mind.

About 20 years ago my sister gave me a toy wooden helicopter. I still have it. It consists of a carved prop with a dowel down the center. You spin it in your hands and then give it one big push with your right hand and it flies several feet in the air. This is actually a really old folk toy and lots of toy making books out there have plans for carving your own. I decide to try and make one from the stirrers.

(A bit of honesty here. This is actually the second wood helicopter I've built. A couple of years ago I made one out of... you'll never guess... clementine box wood! But that is another story.)

So beginningat the beginning, I took a bunch of stirrers and sorted through them to find seven or eight "good" ones. (Again, a relative term when applied to these guys.) I need six for the propeller but I found out early on that these split easily when you are drilling them so a few extra will almost certainly be needed.

The sticks are 7 1/2" long, 1/4" wide and oddly enough... about 1/20" thick (I'm guessing they are really metric. Just saying.) I taped the best ones together and marked the midpoint. I used my hand drill and a 1/16" bit to drill a pilot hole. I then used a 1/8" bit to finish the hole through the middle of the sticks. Honestly, a few cracked and split a bit, but no worries. I had a few extra and there is glue on them anyway. (I used the drill press on the second one I made and it was a much easier. Right tool for the right job, I guess...)

Now the easy part. Just insert a 1/8" dowel through the center hole and push one of the stirrers about an inch down. Hold the dowel so its top is pointed at your nose and you are looking down at the 1/4" wide stirrer. Put some glue on the surface of left side of the top part and the right hand side of the bottom part. (You are gluing the surfaces of the stirrers, not the thin sides.) Now insert the dowel through another stirrer and press that stirrer on top of the first one. Be sure to overlap half of its width of the first stirrer. The top will overlap the left and the bottom the right. You'll repeat this process of gluing and placing each stirrer until you use all six.

With the "pitch" of the prop this way, the surfaces will fly up if you launch it by pushing off with your right hand. If you really want to make a left handed coffee stirrer helicopter (and who am I to judge you if that is your dream) just glue the top to the right and bottom to the left to change the pitch. As you assemble each layer, press them together and use clothes pins as mini clamps until the glue dries. You can do a two or three layers at a time this way.

In all honestly, you could probably just glue the dowel in place now and take it for a "spin." However, not being someone who is willing to leave well enough alone and being someone who just got a WHICKED COOL belt and disk sander, I felt the need to round off the edges and smooth it a bit and then finish it up by hand.

The first stirrer is farthest to the left.
The last one, farthest to the right.
Not perfect, but that really isn't the point.

So now, in the spirit of complete honesty, I have to admit that at first, it didn't work. When I tried to fly it the propeller was clearly generating thrust, but it went every direction but up when I launched it. RATS!

One of my daughters very nicely tried to explain to me that maybe coffee stirrers simply weren't made to be toy helicopter parts. However, I wasn't willing to accept defeat so easily. For centuries humans had dreamt of coffee stirrer power flight and I wasn't gonna let some silly thing like physics get in the way. So, after thinking though it, I realized that the problem wasn't the propeller. The problem was the central dowel. It wasn't long and or heavy enough. I dare say, I had a lateral stability problem. I swapped out the dowel for a longer one  (about 8" long) and it immediately flew like a champ. (Note to the Nobel Committee - When you cut the check, "Toy Making" is two words.)

The dowel could probably be a little shorter, I'll tweak up the design in the coming weeks, but as it is, it's fine. It flies higher and is much lighter than my other two wooden helicopters. This was a simple toy to make and it would be hard to imagine a less expensive one. I might see about cranking out a half dozen of these "dragonflies" some afternoon.

Monday, July 5, 2010

Building a Simple Pinball Game

When I was young, my friend Paul had a Japanese Pachinko machine. If you've never seen one of these in action, you are missing out. Little metal balls plinking back and forth down a maze of little pins. It is really something to see. Think of it as the love child of a modern pinball machine and the "Plinko" game from "The Price is Right" that grew up to be a slot machine. Anyway, it is fascinating to watch and fun to play with.


I really liked that sound and feel and always wanted one. Once I grew up, I found out that stuff like that COSTS MONEY! (Who knew?) So for Christmas about seven or eight years ago, I decided to make something similar for my daughters.


Before I share how I made mine - time to put that BA in History to use and share a little pinball history.


It all started because French soldiers brought a game called Bagatelle to America during the Revolutionary war. It caught on and stayed a part of the new country. Basically, think of it as a mini pool table with more holes. It has wood pegs blocking the holes to make it more difficult. Here is an old political cartoon with President Lincoln at a bagatelle table. (Jeeze, it must have taken cartoonists weeks to make these drawing. Makes you wonder if their editors were ever like, "This is great stuff, but the war ended six years ago so it isn't quite as topical as we'd like...) 


Eventually smaller tabletop bagatelles (begatellei? bagatelleum?) became popular as a saloon or parlor game. Metal pins replaced the wood pegs and it became more of a gravity game with a ball pushed to the top of the board and it finding its way through a maze of pins to various holes. In 1871 the patent was granted for the first plunger for launching the ball (replacing the stick) and pinball was born.
Pinball machines honestly have a bit of a shady past. They had a bad reputation partially because they were seen as games of chance and not games of skill. (The "flipper" didn't even come around until after WW2.) Free game tokens could be traded back in for cash, so they were in effect slot machines. Seeing as how those are illegal in most places, so were pinball machines. In fact, they were illegal in NY City well into the 1970s.


Study your notes on this. There will be a quiz on it next Thursday followed by everyone having to watch The Who's Tommy and pretend like they liked it.


Now on to making one.



This was one of my "proof of concept/leap of faith" toys. I knew what I wanted at the end and knew what I had on hand to make it. When you make stuff like this just take your time and think a little ahead. You'll do fine.


I had a piece of 1/2" thick plywood that was 11" wide by 17" long. Most interior/furniture plywood will have at least one smooth side. Just be sure you are using a smooth side as the playing surface. Next I did my measurements. One thing is that you want to minimize stuck marbles. The average size of the marbles I have lying around is 1/2" so I knew the space between pins needed to be at last that wide. I also knew that I don't want any marbles to have a path to just fall straight through without some plinking around. So... I set up a pattern starting 1" down the board and marked each point with a pencil where the pins/nails would be in rows with offset columns. Each nail in the row is one inch from the next nail. The next row was one inch down and then offset by 1/2" with pins one inch apart. I then had a strip of 1/2" wood as my depth guide and just started tapping in the nails one at a time until I finished 1" from the bottom. It ended up looking like this:




168 3/4" brads each driven in 1/4".
I know... I'm freakin nuts!


Honestly, you'd be surprised how fast this went. One thing that made it easy was that I was just working on a flat piece of board at this point. I had not attached the sides or bottom yet.


Next came the sides and bottoms. I had some 3/8" thick by 1 5/8" wide strips that I used for the frame on three sides. Across the top I used a piece of 1/4" thick x 1/2" wide trim to cover the end of the plywood. No fancy joinery here. I just used end buts, a little glue and few brass nails to hold it in place. Then I laid out the scoring area by cutting pieces of the 1/2" trim and gluing them on edge one inch apart across the bottom. Printed numbers on paper glued to spots finished this off.




I wanted this to be played anywhere so I added an adjustable leg to the back that lets you set the angle that you are playing at. I drilled a 1/4" hole into a 2 3/4" piece of the side/bottom wood. I then glued it off center on the back of the board. After it had dried, using a thumb screw, washers and a butterfly nut, I attached a 17" piece of that wood that I had rounded off its top.




The higher the angle the faster the ball drops. At the lower angle the balls are less likely to leave the table while falling. You can drop pennies and dimes as well and they are fun to watch, but they tend to get stuck on the 1/4" dividers at the bottom. (So maybe use thinner dividers or no nails directly over the holes.)




So there you go. Here it is in action.





We've played it as just highest score with each marble, high score with five marbles or "first one to twenty." It has held up pretty well over the years. Just the occasional nail straightening or the support arm being re-glued.

Thursday, June 17, 2010

Making a Toy WW1 Tank (Part 4)



So the last things to do are make the sponsons, assemble, paint and finish the toy. (And play with it before I have to give it away.) All in all, not so bad and not too many surprises ahead.


The sponsons on the sides are a defining feature of British WW1 tanks. I want them to move but still be sturdy. It would be nice to have the gun barrels move left and right as well as up and down, but at this scale they would have been a little fragile and probably a bit droopy. So a few doodles and a test cut or two later a pretty simple solution came up.


I took another piece of 2x3 and drilled a 3/4" hole through it with a spade bit. Then I took a 3/4" piece of dowel and set it down into a "V" made out of... you'll never guess... the little support corners from a clementine box! (Clementine boxes really are the onions of the frugal toy making world.) I drilled a 1/4" hole about half way through that dowel and then inserted a piece of 1/4" dowel into it. (Don't glue it into place yet though. If you do, you won't be able to make some of the cuts coming up.)




Drill all the way through and make sure you have a thick enough piece of scrap under it.Simple jig that makes it easy to hold any size dowel in place. The triangles are glued down.


I cut the large dowel down to about 1 5/16" with the 1/4" hole being in the middle. I didn't want too tight of a fit because I want the gun to rotate without binding. With the barrel dowel in place I checked the fit and marked the widest point in the arc of the barrel rotation and then made straight cuts with the bandsaw. I tested the fit and made sure the larger dowel could rotate freely but not be pulled out to the front. Then I trimmed the sponson to the rough width and length.


I rotated the barrel through 90 degrees and marked where I need to make the cuts.Here is the "rough cut" of the sponson along with the 1/8" plywood that will make the roof and floor.


I used clementine wood that had printing on it for the roof and floor. I just made the printing inward facing because often that paint will "bleed" through the acrylic craft paint I use to finish toys. (Note to self - look for non-toxic primer.) I have plenty of clear wood I could have used, but I wanted to leave a little proof on a hidden inside part of the tank that this had been built using food box wood. It might seem psycho, but I felt like it was a little "shout out" to Homer McNeil and his toys.


Use enough glue to get a solid seal all the way around. Use clamps and be sure not to get any glue on the dowel that holds the barrel. It needs to be able to rotate freely.Don't glue the barrel in until after the top and bottom have dried and you have finished shaping the sponson.

I used a combination of the bandsaw and belt sander to get the final shape I wanted. There was a wide range in the shapes of the sponsons on the British tanks depending on the model number and the number of guns it carried. The next one I build might have a smaller dowel and barrel towards the back to house a machine gun. Anyway, mine doesn't match an exact version, but it captures the general idea.


Obviously, you'll need to make two sponsons. Make sure that your cuts and sanding match up. 
Now you can glue the barrels in. 


Here we go, the home stretch. I painted it olive drab with the red and white recognition stripes at the front.
I glued and clamped the sponsons one at a time so that I could be sure to line them up how I wanted them.
I did change the location of the nylon clacker to the back of the tank and held it in with a small brass screw. It sounds better clacking "in" rather than out on the gear and it looks like it will be less wear on it. (Actually, I'm gonna keep an eye on it to see if it holds up. I might experiment with a thin metal one instead.)


A scornful look from a black cat isn't required at this stage, but it seemed to be help.The infamous "clacker" in place. Cut from a surplus nylon Venetian blind slat.


The large letter/number combinations at the front of the hull were unit identifications in WW1. The smaller numbers at the back were tank serial numbers. I personalized the tank for my friend's kid by making his birthday the serial number and used a play on his name for the unit ID. I painted the letters and numbers using a very fine point brush and... yes... a toothpick.
The tops of the tracks are painted grey.I did add small driver shields and painted small slots on them.


The last thing I fixed was the machine gun. I really didn't like how the 3/16" dowel looked. To fix it I drilled a 1/16" hole in the center of it and then expanded that hole with a 1/8" hole (doing it like that prevented splintering) and then put a piece of 1/8" dowel into that hole.


After the painting was done, I gave it a coat of spray acrylic and then gave it a test run on the floor.





All in all, not so bad. Nothing too tricky (although there must be an easier way to make the clacker... just saying.) Without the paint, I think this could be knocked out over a weekend without any problem.


Here are the rough plans as a cutting guide. BE SURE TO SET THE IMAGE TO PRINT LANDSCAPE! The tank tracks should be a little over 8" from tip to tip. I tapered the back of my sponsons but like I said, I might add smaller guns at the rear on the next one. (And there definitely will be a next one.)


Just Saying...

While we don’t necessarily need more objects, we just might benefit from more making.
- John Dunnigan

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Regular guy who likes to make stuff who lives with a very patient wife, three daughters and three cats.