This working Train Whistle is made from corrugated card with a set of thin card bellows.

I'm sure you will find it fun to make!

Check out my Instagram feed for some interesting development photos

Step 1:

There is only one part to download, the template for the bellows is in the pdf file. The rest of the project is presented as a step by step how-to.

Follow the instructions and make your own corrugated card train whistle.

Step 2:

Print out the single part onto card and cut it it to use as a template.

You will also need a large sheet of thin card. I use a sheet 640mm x 450mm 230gsm white card. You will also need various sheets of corrugated card. We keep our Amazon delivery packages for just such an eventuality.

In the pictures the large rectangle represents the large sheet of card.

Starting 10mm from the top use the template to mark out small lines down both sides.

Step 3:

Using a long ruler and scoring tool, score between the lines as shown.

Step 4:

Start 7mm from one side use the template to mark on the score lines.

Step 5:

Work your way down to mark out all the score lines.

Step 6:

Use the marks to score the first set of diagonals.

Step 7:

Then the second set of diagonals.

Step 8:

Count out six parallelograms then draw a line down and cut off the excess card.

Step 9:

Pre-crease along all the score lines. The final sheet should look something like this .

Step 10:

Roll round and line up the edge of the card sheet so that parallelograms are aligned and glue them together.

Step 11:

Cut a v shape into each of the tab as shown.

Step 12:

Working one layer at a time, fold in the bellows into shape.

Work all the way down the tube to complete the bellows.

Step 13:

Select a piece of corrugated card that completely covers the open end of the bellows. Glue the tabs and glue the bellows to the card.

Once the glue is dry cut round leaving a gap of a few millimetres.

Step 14:

Repeat the process at the other end.

Cut a 15mm square hole in one end of the bellows.

Step 15: Making the Pipes

Make the parts for two the pipes using corrugated card using the dimensions shown below. The corrugations should be running horizontally.

Step 16:

Using the handle from your scissors and working from the inside of each pipe, flatten down the corrugations of the upper side of the slot to make a thin sharp edge.

Step 17:

Fold round and glue the tube. Apply a strip of glue to the end of the pipe and stand it one a suitable off-cut of card making sure it is square. I stood a book on the end of the pipe to make sure it held into place as the glue dried. Repeat the process with the second pipe. Once the glue is completely dry cut of the excess card.

Step 18:

Glue the two pipes back to back.

Construct two side covers like the one shown.

Glue them so that they are lined up with the bottom edge of the pipe slot.

Step 19:

Cut the two covers and glue them into place. The top edge of the cover and the bottom edge of the holes should be lined up.

Using brown paper tape or glued paper strips, connect the pipes to the bellows over the hole.

Step 20:

Fashion a handle from some card offcuts and glue it into place to complete the model.

Step 21:

Once all the parts are dried, operate the train whistle by pushing and pushing on the bellows. Hoot toot!

Step 22:

<p>I have to try this with my grandchildren nice. thank you for the instructions.</p>
<p>You're welcome :-)</p>
<p>WOW! The paper folding is a little complicated, but if you like origami, it's perfect. Kids would love this! I think maybe doing the folding out of tissue paper would be good for a party.</p>
<p>Have fun! I think you might have difficulty using tissue paper - I used thin card as the bellows do need a certain amount of strength.</p>
do this with the kids.gonna be fun!
<p>Hi Robives, you're the best, what creative are your models</p>
<p>Thank you :-)</p>
<p>One other thing, could you make another one on using normal printer paper? I dont have anyother paper biger then that.</p>
<p>Did it with ordinary printer paper (A4) with a template: Print </p><p>http://aschers.de/instruct/bellows_template.pdf as Poster and glue together. Worked for me with 80g/m&sup2;.. </p>
<p>Thanks for the info!</p>
<p>There are various bits and pieces on my website, try searching for bellows - https://www.robives.com/search/node/bellows</p>
<p>Should you make a note of which of the folds are hills, and which are valleys ? </p>
It is not really necessary, Once you start folding it is pretty obvious which is which
<p>Any video of it working?</p>
<p>Yeah, it is on my Instagram Feed - @robivescom</p><p>link here : https://www.instagram.com/p/BSlsd7HhSRL/</p>
<p>this is someting that actually deserves the feature! nice work!</p>
<p>Thanks :-)</p>
I found it to hard to make
<p>You certainly have to take care to be accurate and the bellows are fiddly to fold - hope it worked for you</p>
<p>This looks like it would make a nice &quot;door announcer alarm&quot; if it were attached to a door with an elastic string to push/pull the bellows.</p>
<p>Nice idea!</p>
<p>I read a paper on this form of origami, and couldn't visualise the making process ! Thanks a lot. I'll try this now. </p>
<p>Im sure I'm gonna build this one the weekend. NIce work</p>
<p>Have fun!</p>
<p>Nice !! I might have to try this :)</p>
Thanks Karen, do give it a try, it's a fun build :-)

About This Instructable




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