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Mon 8th Feb 2016

It's been a while - I've been finishing off a book project for a US publisher - I'll tell you all about it as soon as I can. Meanwhile, I'm now working on a pirate model, here's the head, of which I'm rather pleased. Normal service will now be resumed.


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The Flying Pig web site is the home of my printed paper models. It has been quite a while since I added anything new so I have been looking through my robives.com catalogue to see what would make a nice paper animation kit.

I've picked out these few as possibilities but what do you think? Are there any models from the store that you would like to see made into printed kits? Let me know in the comments below or by email.

 

Flexiphant Tortoise Hen Pecked Dog's Dinner

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Sat 23rd Jan 2016

New Year new YouTube clips! Mr Cool has been busy as always and has produced this delightful little mash up using the rack and pinion mechanism from earlier this month. Thanks for sharing!

Meanwhile on the other side of the Atlantic Michael42er has made the pro version of the Hopping Reindeer model. Lovely as always Michael! Thank you!

I'm in the last week of a book project - more details of which shortly, once the book is completed I have loads of ideas for new projects for robives.com. Should be a good year!


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£2.50
Download Rack and Pinion
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Rack and Pinion, an Essential Mechanism to download and make. As the pinion turns the rack moves back and forth. Make this model as as exercise in pure mechanism or as the starting point for your own paper animation characters. The mechanism converts rotary motion of the crank wheel at the front of the box to straight line motion of the rack. You could use it to move a car across the box top, have a tortoise extend its neck out of its shell or perhaps make a frog with an extendible tongue! You can see an animation of the rack and pinion here

Members and patrons can download the model for free, thanks for signing up! Non members can join in the fun for £2.50 at the link above.


Print the three parts sheets onto thin card (230gsm / 67lb) I used coloured card for a colourful model.

Cut out the holes then score along the dotted and dashed lines before carefully cutting out the parts.


Fold over and glue down the rack to make double thickness card. Once the glue is dry carefully cut out the rack teeth.


Make the crank wheel from double thickness card.


Make the pinion from double thickness card ensuring that the centre tabs are lifted free from the glue.


The centre pieces are also made from double thickness card.


Fold round and glue down the tabs on the box ends making equilateral triangle tubes.


Fold round and glue the tabs on the box top and base making right angled triangle tubes.


Assemble the rack slider and glue it to the rack.


Thread the rack tube to the slider tube ensuring that it is free to slide up and down the tube.


Glue the ends to the top, note the location of the holes in the box ends.


Glue the box base into position but don't glue the side tabs into position yet.


Thread the slider tube though one of the holes in the box ends. Note that the rack is parallel to and closest to the base.


Thread the other end of the slider tube into the other end of the box.


Splay out and glue down the tabs at both ends of the box.


Glue down the box side tabs.


Thread the pinion to the axle outer tube. Don't glue it into place as you will need to fine tune its position..


Roll round and glue the axle tube lining up the end as accurately as possible.


Thread the axle inner into place inside the axle outer. No need to glue, friction will hold it in position.


Fit the axle stub into the crank wheel.


Thread the side pieces to the pinion assembly and glue them to the marked areas on the box.


Move the pinion into position on the axle so that it meshes with the rack


Glue the crank wheel into position to complete the project.


Turn the crank wheel and the rack will move back and forth.


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I've made rack and pinion mechanisms before, but I really wanted to use the mesh gear design that I have been using with standard gears. Here's what I have come up with so far. Click on the picture to see the Instagram animation.


The idea with the mesh gears is that they can be made from simple flat shapes. This is, I think, in keeping with the ethos of paper engineering. The flat shapes are then meshed together at ninety degrees to each other. I've used the same technique with this rack and pinion mechanism. As the pinion turns the orange tube (the rack) is driven back and forth along the blue inner tube.


Here's the next stage prototype with new tooth profiles on both the pinion and the rack. The box holds the parts in alignment.


I finished off the box by adding a big crank wheel to the front.


As well as being interesting as a pure mechanism I'm sure that the rack and pinion will come in useful as the core of some interesting automata projects.

By attaching a thin paper loop it can be used for pulling a model across the top of a box...

...or by cutting a long thin slot in the box top it should be possible to make a mouse scuttle...

...or a tortoise peep out of its shell.

Next step - I'll be completing the parts layout and releasing the rack and pinion as an Essential Mechanism for you to make for yourself.


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£2.00
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Stanley Claus: Santa's younger brother. Stanley takes care of the New Year after Santa has finished his shift. Members can download and make Stanley for free at the link - thanks for signing up. Non-members can join in the fun for £2.00


There are two versions of the model, coloured and uncoloured. Print out the version of your choice onto thin card. 230gsm/67lb


Before cutting out the parts score along all the dotted and dashed lines and cut round the nose and the ears.


The antlers are double thickness card. Fold them over and glue them down before carefully cutting them out. Make sure you don't glue the tabs together.


Curve round the four sections of the head and glue them together.


Glue the antlers to the marked areas on the top of the head.


Glue the beard into place.


Glue the 'tache to the underside of the nose.


Gently curve round the body in preparation for gluing.


Glue the body.


Roll round and glue the legs.


Glue the legs together


Curve the arms.


Glue the arms into the shoulder holes in the body.


Glue the legs to the feet.


Glue the legs to the body lining up the top of the leg tab to the bottom of the arm hole.


Complete the model by threading the head tabs into the body slots. there is no need to use glue for this stage, leaving it i=unglued allows you to move the head changing the pose slightly.


Stanley Clauses!


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£2.50
Download Hopping Reindeer
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A mash up model for the festive season. I've taken the Reindeer and Tree from here and the Three Cam and Gear Box from here and made this paper automata. In a call back to one of my first ever designs I've called it the Hopping Reindeer.


All the parts that you need are in the downloadable file. Members can download for free, thanks for your support! Non members can download the parts at the link for £2.50

Print out the parts onto thin card (230gsm /67lb)

Score along the dotted and dashed lines then cut out the parts. The instructions are basically the same as the original models with a few small changes. Check out the reindeer and tree instructions here. The instructions for the base are here but check out the instructions below for some minor changes to the original.


Here's the completed cam shaft, note that the third cam now has three lobes.


Here's the cam shaft and gear fitted into place.


The slightly redesigned cam followers now have a triangular end to more closely follow the cams.


With the box upside down the cam fits in here.


The push rod is slightly long and fits to the cam follower like this.


All three cam followers fitted into place.


Make up three reindeer.


Glue them to the ends of the pushrods.


Turn the handle and delight at the Hopping Reindeer! Festive Felicitations one and all!


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£2.50
Download Three Cams and Gear
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Three cams and gear box - Turn the handle and the gear turns, driving the cam shaft and the three cams. Download and make this Essential Mechanism as a exercise in pure mechanism or as the starting point for your own character based paper animation.


Print out the parts onto thin card (230gsm /67lb) I used coloured card for a colourful model but you could use white card or print a pattern onto a sheet of plain card before printing out the parts.


The gears are made from double thickness card. Fold them over and glue them together. Once the glue is dry carefully cut them out.


Fit the short axle tube into the pinion gear lining it up with the grey line.


Glue the cam shaft to the large gear.


Fold over and glue down the cams to make double thickness card.


Fit the cams to the cam shaft arranging them so that they are offset by 120 degrees.


Roll up and glue down the three axle tubes. Line up the edge of the tube part with the edge of the grey area and the points of the triangles..


Make up the box end.


Fold round and glue down the triangular tubes on the side of the box top and box base.


Fold in the sides of the box end and glue them down making right angled triangles


Glue the box end to the base - note that it glues to the end with the larger space on the triangular tabs.


Glue the box top to the box end.


Fold round and then glue in the other box end.


Glue down the flaps to complete the box.


Fit one of the short axle stubs into the cam shaft.


Fit the gear and cam shaft into the box then locate it into place with the other short axle stub.


Fit the pinion gear to the end of the long axle.


Assemble the handle in three steps.


Roll round and glue down the gear locater.


Fit the gear locater onto place so that the gear is held up against the box side but is still free to turn. Thread the long axle and pinion into place so that the pinion engages the large gear.


Glue the handle into place at the front of the box.


Assemble the three cam followers.


Fold over and glue down the three push rods make a double thickness shaft with a tab at each end.


Glue the push rod to the cam follower.


Fit the three cam followers into place using the grey areas for alignment.


And there it is! Click the picture below to see an animated version on Instagram.

 

Next time! I'll show how you can make this charming reindeer automata using this project and the reindeer paper toys from the previous post.


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Paper Reindeer and Tree - A little gift for all my lovely subscribers :-) Papertoy Reindeer for members to cut out and make. Print out and make this festive project as a table decoration or as a paper character. Match it with an Essential Mechanism to bring it to life!

Print out the parts onto thin card. Score along the dotted and dashed lines then cut the parts out.


Fold over the legs and glue them down to make double thickness card.


Carefully cut along the thicker parts of the lines at the top of the legs, You need only cut small arches to give the legs a 3D look in the finished model.


Carefully cut the body out.


Make the head from double thickness card.


Glue the body inner to the inside of one side of the body


Gently curve the body round and glue it to the other side of the body inner.


Glue the neck into place.


Glue the head to the neck tab lining it up as shown.


Ta daa!


Glue the three parts of the tree together as shown. Glue the tree to the circular base.


Looking good! Next I'll be publishing the parts for a three cam box perfect for mounting the reindeer to.

You might want to make three reindeer to be ready!


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Thu 10th Dec 2015

More creations from the ever inventive Michael42er. Check out his incredible version of my laser cut cupid project.

Says Michael:
"Since the publishing of the "Cupid laser cut" models, I thought of the construction of this model. Unfortunately, I have found no one who performs this section works reasonably priced. The idea to build a paper / cardboard model is now realized. The pattern were used on the same scale. I used extra-thick cardboard for the side panels and the base plates. The gears and the pinion coming from the project: "Essential Mechanisms: Gear Box 2: 1". It works just fine, is effortless and very attractive. It has been a pleasure."

What a fantastic piece Michael. Thank you so much for sharing!

 

There is a YouTube video so you can see the model in all its animated glory.


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