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Running Dog. Turn the handle and see the dog run powered via the mesh gears and crank mechanism

Watch the running dog in action in this YouTube video!

The running dog is based on the Mesh Gear / Crank mkii Essential Mechanism. All the parts, including the Mesh Gear Crank are included in the Running Dog file. Members can download the parts file for free at the link, non members can join in the fun for £2.50

Download and print out the parts onto thin card. (230 gsm / 67lb is about right) Score along the dotted lines and cut out the holes before carefully cutting out the parts.

You will need to construct the Mesh Gear / Crank first, instructions are here.


Once you have completed the box it is time to construct the dog.

Start by assembling the neck and body then gluing them together as shown.


Glue the leg supports into the body with the front piece to the front and the back piece to the back. Make sure that the glued section is upright.


Assemble the stand and glue it into the body.


Fold up and glue down the two linkage pieces as shown so that the short section is made from double thickness card.


Glue the linkages to the leg supports so that they just clear the stand piece.


Make up the four legs by folding them over to make double thickness card then cutting them out. Make the paws in the same way and glue them to the tabs on the ends of the legs.


Assemble the head and ears.


Make up the tail from double thickness card and glue it to the back of the body


Glue the legs to the small tabs on the leg support (arrowed)

Line up the leg so that the centre top of the leg is over the hinge in the leg support. (dotted cross)


Repeat the same process with the front legs.

When you pull the linkages the legs should move up and down freely.


Glue the head to the neck.


Glue on the eyes and nose.


Fit the dog to the top of the main drive shaft gluing it into position .

Glue the two linkages to the top of the box to complete the model.


Turn the handle to see Spot run!


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£2.50
Download Poseable Dog
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A Poseable Dog to download, print-out ad make. This delightful canine has movable legs, head and tail, the perfect desktop companion who never needs you to take him for a walk!

The parts file is available for members to download for free at the link. Non-members can join in the fun for £2.50.

Print out the parts sheet onto thin card (230gsm / 67lb). Score along the dotted and dashed lines and cut out the holes before carefully cutting out the pieces.

 

 


The tail, legs and paws are all made from double thickness card. Fold over the pieces and glue them down. Make sure that the small tabs on the legs are lifted up and not glued.

 


Once the glue is dry carefully cut out the pieces.

 


Thread the tabbed tail piece through the hole in the tail and fold the tabs flat on the other side.

Glue the cover to the tabs on the other side of the tail. Make sure you don't get any glue on the tail itself, these circular pieces must be free to turn inside the tail hole.

 


Glue the second tail cover into place on the back of the tail then glue the two creased pieces to the two covers so that they are lined up with each other.

 


Assemble the body as shown.

 


Thread the tail out of the body from the inside then glue the two semi-circular tabs to the inside of the body so that the top of the circle lines up with the crease line in the body.

 


Glue the wide paws to the front legs...

 


...and the narrow paws to the rear legs.

 


Glue the neck into place in the body, use the grey areas for alignment.

 


Thread the leg tabs into place through the holes in the body and fix them into place with a couple of small dots of glue on the tabs glued to the 'L' cover circles. The legs should be free to move.

 


Fit the rest of the legs in the same way.

 


Fit the head covers into place as shown.

 


Glue the body front into position.

 


Assemble the head.

 


Glue the head to the head cover circles. The head should be free to nod up and down once the glue is dry.

 


Glue on the eyes.

 


Laminate the two layers of the ears together curving them into shape before the glue dries.

Once the glue is dry cut out the ears.

 


Glue the two ears to the head as shown.

 


Once the glue is dry your new best friend is complete! Woof!


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£2.50
Download Rise of the Mammals
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Rise of the Mammals.

Turn the handle and the slightly scared mouse holds her ground in the face of the blue dinosaur! The mechanism is powered by a combination of two stage gear box for the dinosaur and cam to drive the mouse.


You can see the completed smodel in animated action of this YouTube video.

Members can download the parts for free at the link. Thanks for signing up! Non-members can join in the fun for £2.50.

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

Score along the dotted and dashed lines and cut out the various holes before carefully cutting out the parts.

 


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


Roll up the various tubes carefully lining up their ends with the arrow points and gluing them into place.


Make up the two crank pieces.


Fit one of the crank pieces into the large gear with the off-centre square hole. The short end of the crank goes through the hole.


Make up the push rod ends from double thickness card. Once the glue is dry carefully cut them out.


Thread the longer of the three crank tubes through the two push rod ends. Glue the push rod ends to the push rod.


Assemble the crank unit as shown.

Fit the two shorter crank tubes into the ends of the crank pieces. (Not shown on this picture)


Fit the small gear to the grey line on the long square tube and thread the long axle into place as shown. Use a dab of glue to stop the tube rotating.


Glue the two cam pieces to the axle.


Assemble the box top and bottom as shown - the side pieces are right angled triangles.


Fit the centre piece into the hole in the box base.


Glue the tabbed small gear to the end of the link tube.


Thread the axle through the centre piece and glue the large gear to the link tube.


Take the two box end pieces. Fold the tabs round and glue them down to make triangular tubes.

Fit the box end to the base. Fit the axle into place as shown.


Fold up and glue the box end into place as shown.


Repeat the process at the other end with the other box end and the crank assembly.


Fit the box top into place threading the push rod up through the hole.


Assemble the handle in three steps.


Fit the handle to the box. Once the glue is dry you can test the mechanism to make sure it it s working properly.


Make up the rear legs and feet as shown.


Glue the feet to the grey areas on the box top.


Assemble the body inner as shown.


Glue the body inner to the body top between the two small arrows on the body top.


Glue the side pieces to the top.

Line the tabs up next to each other.


Finish gluing the tabs together along the length of the body.


Glue the body inner to the inside of the body lining it up with the top of the cut outs in the body sides.


Glue the neck push rod to the link piece.

Glue the link piece to the moving part of the body inner as shown.


Glue the other end of the push rod to the head tab.


Glue the two leg pads into place.


Glue the body front onto place.


Glue the head to the head tab.

Glue the arms into place.


Assemble the mouse as shown.


Fold over the body stand and glue it down.

Glue the tabs to the inside of the mouse body.


Thread the mouse stand down through the hole in the box then roll round and glue down the piece to make the cam follower end.


Glue the dinosaur front to the push rod end.


Glue the leg pads to the inside of the legs.


Turn the handle to bring the past to life!


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£2.50
Download Two Stage Gear
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Essential Mechanisms

A two stage gear with crank output. Turn the handle on the side of the box and the crank turns slowly. The gear box works in two stages at each stage a nine tooth gear drives a seventeen tooth gear. The output stage is driven at 1/3.57th the speed of the drive handle.


Members can download the parts for free at the link. Thanks for signing up!

Print out the parts onto four sheets of thin card. (230 gsm / 67lb) I've used pre-coloured card to make a colourful model.

Score along all the dotted and dashed lines and cut out the holes before carefully cutting out the parts.


The gears are all made from double thickness card. Fold them in half and glue them down. Once the glue is dry carefully cut them out.


Roll up and glue down the five tube sections. Line up the end of the tube with point of the arrow heads on the tube sides.


Assemble the two crank pieces as shown.


Find the large gear with the offset square hole. Fit the crank piece into place gluing it to the grey area. The short end of the crank goes through the hole.


Make up the two push rod ends from double thickness card. Once the glue is dry carefully them out.

Thread the longer of the three crank tubes through the push rod ends. Assemble the push rod tube then glue the push ends into place on the grey areas.


Fit the crank pieces to the push rod tube then glue the other two axle tubes into the open ends of the crank pieces as shwon in the picture.


Assemble the three parts of the drive gear as shown.


Glue together the box base and box top - the edges are right-angle triangles.


Glue the centre piece into place in the box base. (The one with only one hole)

Glue two tabs onto one side of the base and the other two onto the other side.


Fit the second small gear to the link tube as shown lining up the edge of the tab with the end of the tube.


Thread the link tube through the hole in the centre piece with the small gear closest to the centre of the box base. Glue the second large gear to the link tube. Make sure that the gears are free to turn.


Fold in the various tabs on both of the box-end pieces to make triangular tubes.

Glue the box end without the side cut-outs to the tab on the base nearest the large gear.


Thread the drive gear into place in the box-end then fold up the box end and glue it to the base.


Repeat the same process with the other box-end, don't glue the sides down yet.


Fit the box top into place. Make sure the centre piece is glued into place in the hole in the box top.

Glue the ends to the top then glue the sides into place to complete the box.


Assemble the handle in three stages as shown.

 


Complete the model by gluing the handle to the drive shaft.


Once the glue is dry, turn the handle and marvel as the gears mesh together driving the crank!

Use this model as an exercise in pure mechanism or as the starting point for your own character based models


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Paper Unicorn!

Rock the unicorn back and forth and she stretches out her head and neck using a simple linkage concealed beneath the body.

I designed this model for Brother International Creative Centre, it is available to download for free here.

It is a fairly straightforward model being classified as medium difficulty on their website. I hope you enjoy it!


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£2.50
Download Shark Attack
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Shark Attack!

Turn the handle and the sharks circle menacing around the boat. Duuh duh! Duuh duh!

This model uses a variant of the mesh gear essential mechanism which I will shortly be releasing as a stand alone project.

Paid subscribers to robives.com can download the model for free at the link, thanks for your support! Non-members can download the parts file for £2.50


The model comes in both coloured and non-coloured versions. Print out the one you choose onto thin card. (230gsm/67lb is ideal) Score along the dotted and dashed lines and cut out the holes before carefully cutting out the pieces.


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


Once the glue is dry carefully cut them out.


Roll up the three axle tubes carefully lining up the edges with the arrows as shown.


Fit the pinion gear into the pinion tube lining it up with the grey line and gluing it into place with the tabs.

Fit the 8mm tube into the square tube lining it up between the two grey lines.


Fit the gear shaft into the large gear and thread in the 9mm axle tube so that it lines up at the bottom face of the gear.


Fold round and glue the base piece leaving the ends unglued. Fit the base spacer into position. The end of a chop stick can be handy for reaching inside the base when gluing the tabs on the spacer down.


Glue closed to complete the base.


Fold up and glue the box front and box back. Note that the long triangle tube is a right angled triangle.


Crease the score lines on the box sides in preparation for assembly.

Note the four grey alignment arrows, arrowed in the picture.


Glue the two sides to the base between the alignment arrows.


With the two sides glued into place, glue and push home the 7mm tube.


Fit the large gear over the 7mm tube. It should be free to turn smoothly.


Glue the box front to one of the box sides. Make sure you glue it to one of the edges closest to the rectangular holes in the side pieces.


Join the box front to the other box side.


Fit the axle support between the two box sides making sure that the circular hole is facing towards the front of the box.


Thread the pinion gear into place between the box front and the axle support.


Glue the box back into place.


Thread the box top down over the vertical axle tubes and glue the top into place.


Assemble the handle in three steps as shown.


Glue the handle to the pinion shaft.

Once the glue is dry turning the handle should turn the outer of the two vertical shafts. The centre vertical shaft should remain stationary.


Glue together the rotating disk and tube.


Make up the shark fins from double thickness card. Once the glue has dried carefully cut them out.


Glue the fins to the disk. The wake pattern on the disk should be behind the fin.


Fit the rotating disk to the outer vertical tube. Turn the handle and test that the disk turns properly.


Assemble the boat stand and boat stand inner.


Fit the boat stand to the inner vertical tube.


Assemble the two parts of the boat.


Fit the boat onto the boat stand, you won't need to glue it down.


Assemble the boater man from double thickness card.


Glue him into the back of the boat to complete the model.

Turn the handle to see the sharks circle menacingly round the boat!


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£2.50
Download Mesh Gear
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Essential Mechanisms: Mesh Gear.

Turn the handle on the side of the box and the interlocking gear teeth drive the vertical shaft. Make the model as a demonstration of pure mechanism or use it as a starting point for your own character based automata.

Members can download the project for free at the link. Thanks for signing up! Non members can download the parts for £2.50. Once you have downloaded the file, print out the pieces onto thin card. (230 gsm / 67lb) I used coloured card for a colourful model. You can use coloured, white or patterned card. The choice is yours.

Score along the dotted and dashed lines and cut out the holes before carefully cutting out the pieces.


Start by making the two gears. They are made from double thickness card. Fold over the pieces and glue them together. Once the glue is dry carefully cut out the teeth.


Make up the crank in three steps.


Fit the nine tooth gear to the crank handle. Line it up with grey line on the handle shaft.


Roll up the two axle tubes and glue down the edges so that they are lined up with the arrow points as shown.


Glue the an axle tube into the handle pushing it completely home.


Glue the short axle tube into the gear, again lining it up with the grey line.


Thread the axle tube into place so that the short axle tube is between the two grey lines.


Fold up the box inner as shown. The end tabs are folded round and glued down to make equilateral triangle tubes. Note that dashed lines are hill folds, dotted lines are valley folds.


Assemble the two short stiffeners and glue them into place on the underside of the box inner as shown. They should be roughly two millimetres from the hole.


Assemble the two box sides. The side tubes are right angled triangles and the end tube is an equilateral triangle.


Fold up and glue down the triangle tube sections on the box top.


Assemble the two box top stiffeners and glue them to the underside of the box. They should be a couple of millimetres from the hole in the box top.


Glue the two box sides to the folded up box inner as shown.


Fold up the box sides and glue them to the box inner as shown. Keep the box centre as square as possible.


Thread the small gear shaft through one side hole in the box inner, through the alignment piece, and out the other side.


Drop the larger gear into place so that it meshes with the other gear.


Complete the mechanism by gluing the box top into place.

As the handle is turned the gears mesh and the vertical shaft is rotated.


The rotation of the vertical shaft can be difficult to see. The hand makes it clearer.

Glue the two halves of the hand together leaving the middle unglued. Slip the completed hand over the vertical shaft.


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£2.50
Download Gear Box
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Essential Mechanisms: Gearbox.

This gear box features a two to one reduction gearbox. (The gear ratio is actually 23:12 so that the same teeth are not constantly in contact with each other) Use this model as an experiment in pure paper mechanism or as the starting point for your own character based designs.


Print out the parts onto thin card. I used coloured card to make a colourful model. You can use coloured, white, patterned or a mix of all three. Thin card, roughly 230 gsm / 67lb is ideal.

Score along the dotted and dashed lines and cut out the holes before carefully cutting out the pieces.


The teeth of the pinion gear are made individually. Don't worry, there are only twelve! Fold up and glue down each tooth then glue them together in a strip. Make sure that the teeth are just touching at their base.


Twelve teeth glued together.


Glue one of the gear centres to the pinion axle along one of the grey lines.


Glue the two gear fillets into place so that their ends touch the gear centre where the tabs stick out. (arrowed)


Glue the second gear centre into place.


Take the gear strip. Starting from the end with the hanging tab glue the teeth round the central core...


...finishing by gluing the end down to complete the pinion.


Roll up the two paper axles gluing their ends down lined up with the arrows.


Take the longer of the two axle tubes and thread it through the pinion. Line up the grey line with the end of the square tube. (Arrowed)


The larger gear is made of double thickness card. Fold the piece over and glue it down. Make sure that the central tabs are not stuck. Once the glue is dry, cut out the gear. You can cut out the four sector holes if you like although they are purely for decorative purposes.


Fit the gear to the second square tube lining it up with the grey line then fit the white axle tube into place.


The two gears ready for action!


Assemble the handle in three steps.


Making the Box

Make up the two box side. The triangle sections should be right-angled triangles.


Make up the two box ends. This time the triangle sections are equilateral triangles.


Join the two ends to one of the sides. Use the two and three dot makings to ensure the correct arrangement.


Fit the second box side.

Glue in the side flaps from the box ends onto one side only. Make sure that the box stays square.


Fit the gears into place as shown.


Close the box over the axles and glue them down.


Complete the gear box by adding the handle to the pinion gear.

You can use this as a complete model, the gear is a rather satisfying mechanism in its own right. Or you can use the project as the starting point for your own character based design. I'll be adding a couple of examples of what you could do in the near future.


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£2.50
Download Dinosaur
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A paper dinosaur to print out and make.

Members can download the parts for free at the link, thanks for signing up! Non-members can join in the fun for £2.50. There are three versions in the download, two coloured and one line only version for you to print out on your choice of coloured or patterned card. Print out the dinosaur onto thin card (210gsm / 67lb) Score along the dotted and dashed lines and carefully cut out the parts.


Fold round and glue down the bottom tab of the centre piece.


Note these two marks on the body top...


Glue the centre piece to the body top between the two marks.


Starting from the end of the neck (arrowed), glue the two sides into place.


Work your way right down to the tail end gluing the tabs down two or three at a time.


Glue the two tail parts together using the tabs.


Using the small arrows for alignment, glue the body front into place.


The legs and feet are made from double thickness card. Fold the pieces over and glue them together. Once the glue has dried carefully cut out the pieces.

Glue the legs to the feet.


Glue the legs to the body on the grey areas.


Assemble the head then glue it to the top tab. Make up the eyes from double thickness card and glue them into place.


The arms are also double thickness. Once you have made them and cut them out, shape them gently for a realistic pose then glue them into place.


The paper dinosaur could be a good starting point to design your own animated paper character!


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£2.00
Download Crank Slider
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The crank slider is a combination of two mechanisms, a crank and unsuprisingly a slider. It makes a useful starting point model for your paper animation projects. Build the mechanism then fit a flying bird or a leaping cat or perhaps even a writhing snake!

The model is free to download for all members. Non-members can download the parts for £2.00


Print out the two pages onto thin card (230 micron-67lb) Score the dotted and dashed lines and cut out the holes before carefully cutting out the parts.

 


Fold the crank ends over and glue them down to make double thickness card. Once the glue is dry carefully cut out the parts.


Assemble the the two crank parts as shown.


Roll up the three axle tubes. Line up the edges with the the small triangles.


Assemble the push rod. Glue the push rod ends into place with the short axle tube threaded into position.


Glue the two crank parts and the two axle tubes into position.


Glue up the two box sides as shown.


Glue up the box top and base as shown.


Glue together the four parts of the box. Note that the holes in the box sides go furthest away from the box top .


Assemble and glue the slider tube into position.


Thread the push rod up through the slider tube. Fit the box onto the crank and glue the box closed.


Glue the front and back flaps into position.


Assemble the handle.


Finish off the box by gluing the handle into position.


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