£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 Intermittent Gear
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Here's a quick experimental mechanism for you to download and make. Both gears in the model have ten teeth. The larger gear started as a seventeen tooth gear then had seven consecutive teeth removed. Turn the handle and the smaller gear is turned a full rotation then pauses as the blank part of the large gear moves past. This motion is repeated as the gear is turned.

The model makes an interesting mechanism in its own right but could also be used in a character based model.


As always, members can download the models for free from the link. Non-members can download the parts for £2.50.

Print out the parts onto two sheets of thin card - 230gsm / 67lb is about right. Use coloured card for a colourful model!


The gears are made from double thickness card. Fold them over and glue them down.


Once the glue is dry carefully cut out the parts.


Fit the long square axle into the small gear lining it up with the grey line.

Roll up the two axle tubes and glue them down lining up the ends with the edge of the grey area.

Fit the shorter round axle into place in the square tube.


Fit the short square axle into the large gear lining up the gear with the grey line.


Assemble the handle in three steps as shown.


Glue the long round tube into the handle.


Fold round and glue down the tabs on the box ends.


Assemble the box base as shown and glue the box ends into place on the tabs as shown.


Thread the handle and axle through the box base. Glue the large gear to the axle. The handle should be free to turn.


Fit the small gear into the hole in the top of the box base as shown.


Fit the box top into place over the end of the round axle.


Fold up the box sides and glue them into place.


Fold in the box end sides and glue them down to complete the model.


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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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£2.50
Download Flying Santa
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Just in time for Christmas! Turn the handle on the Flying Santa and his arms flap as he bobs and swoops through the frosty winter air. Three flaps for each bob. Ho ho ho!

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


Print the parts out onto thin card. 230 gsm / 67lb. The coloured version of the kit is printed on both sides of the sheet. Print one side, flip the card over then print the other side on the back.

Once the ink is completely dry, score along all the dotted and dashed lines and cut out the holes before carefully cutting out the pieces.


Notice that the nose and moustache are cut round the edges and lifted out a little to give a 3D effect.

Roll the head round and glue it down.


Curve the hat into a cone and thread it up through the head. Glue the bobble into place.


Glue the small tab to the back of the head.


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


Fold over and glue together the push rod ends and cams to make double thickness card.


Cut them out once the glue is dry


Glue the arm push rod to the arm as shown.


Fold up the body inner.


Glue together the three parts of the body.

Fit the body inner into the body.


Thread the arm push rods and arms through the holes in the side of the body and glue them to the tab. Make sure that the arms are free to flap up and down.


Glue the tab on the back of the head to the grey area on the back of the body.


Assemble the leg support parts and glue the legs into position.


Glue the legs into the body.


Roll up and make the various tubes lining up their edges with the arrow points.


Assemble the push rod. Glue the push rod end into place with the shortest tube threaded into position.


Assemble the two crank pieces.


Thread the two cams onto the crank pieces and glue them down.


Glue the crank pieces to the centre axle. Make sure that they are lined up.


Fit the two axle tubes into place.


Glue together the two parts of the cam follower. Thread the cam follower tube into place and glue it down.


Make up the four spaces by folding in half and gluing down the small rectangles making four double thickness squares.


Thread the cam follower down onto the push rod. Don't glue it! It must be free to move up and down. Glue two spacers into place on the end of the slider tube as shown.


Slide the other two slider tubes into place. Glue the two remaining spacer pieces onto the second slider tube as shown.


Assemble the link pieces and use them to join together the two spacer pieces on each side. Make sure no glue gets onto the centre slider tube.


Assemble the box top and box base by make triangle section tubes.


Assemble the two box sides by making right angle triangle tubes.


Join the four box pieces together. Use the picture to ensure they are in the correct order.


Thread the push rod assembly up through the box top and glue the centre slider tube to the box top tab.

Fit the axles through the holes in the box sides.


Fold up and complete the box keeping everything as square as possible.


Assemble the handle in three steps as shown.


Glue the handle into place. Notice that the cam follower assembly is at the front and the handle is on the right.


Tightly fold up a couple pennies (4 grams each 20mm diameter) into an off-cut of card.


Glue the coin bundle to the front of the cam follower.


Thread Santa down onto the top of the push rod. He should be facing towards the front where the cam follower and coins are.

Glue the ends of the arm push rods to the top slider tube.


That should do it! Turn the handle and Santa will flap his arms three times for each time he swoops. Ho ho ho!

 


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£2.50
Download Co-axial Gear
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Co-axial Gear.
Essential Mechanism.™
Here's an interesting mechanism for you to download and make! Turn the handle on the front of the box and the planetary gear reduces the output speed by half.
Use it as a stand-alone paper mechanism or as the drive for your own paper animation kit.
Members can download the parts for free from the link, non-members can join in the fun for £2.50

 


Print out the parts onto thin card (230 micron / 67lbs) Coloured card makes for a colourful model.

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


The four gears are made of double thickness card. fold them in half and glue them down. Once the glue is dry carefully cut them out.

 

 


Roll up various tubes and glue them down, carefully line up the ends with the arrow.

 


Assemble the two parts of the cross piece.

 


Fit the long 8mm tube into the cross piece lining it with the square tube between the two grey lines.

 


Glue the other two 8mm tubes into place.

 


Fit the square section into the pinion gear then fit the short tube into place using the grey lines for alignment. Repeat the process with the second pinion gear.

 


Thread the pinion gears over the 8mm tubes. They should turn freely. Glue the end stops on to hold the pinion in place without stopping them from turning.

 


The completed pinion assembly.

 


Glue the four spacers to the grey areas on the large fixed gear. Fold the spacers up and glue them to make a shallow box.

 


Assemble the box front and back.

 


Glue the fixed gear into place in the hole in the box back.

 


Thread the pinion assembly into place so that the gears mesh with the fixed gear. The assembly should be free to rotate.

 


Fit the square tube into place in the large gear using the grey line for alignment.

Fit and glue the remaining tube into place lining it up with the end of the square tube.

 


Fit the large gear into place as shown. Don't glue it! It should be free to turn over the pnion assembly.

 


Assemble the two box ends.

 


Thread the box front into place over the axle.

Glue the two box ends into place as shown.

 


Assemble the handle in three steps.

 


Glue the handle to the shaft as shown. Let the glue dry completely.

Turn the handle and the mechanism turns the output shaft at half the speed of rotation of the handle.

 


To make it easier to see the rotation of the output shaft assemble this push-to-fit hand. Once the glue is dry, slip it over the output shaft.

 

 


The input and output shafts are lined up so you can daisy chain more than one of the mechanisms. Each gear divides the rotation by a further two times.


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Another of my designs from the Brother International website. Pull up the body on the easy to make paper girl and the arms raise upwards. Way hay!


Everyone can download and make the paper girl for free from the Brother website here.


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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 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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£2.50
Download Hippo
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Turn the handle, the gears mesh and the cams turn. On top of the box the hippo slowly opens her mouth wide in a leisurely yawn whilst the bird flits back and forth looking for insects to peck.

Paid members can download and make this model for free from the link. Non-members can download the parts for £2.50UKP

Once you have downloaded the file, print out the parts onto six sheets of thin card. 230gsm or 67lb is about the right weight.

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


Fold round and glue the side of the box top and base to make right angled triangles.


Fold of the end of the box end to make triangular tubes.


Repeat the process with the other two box ends.


Join the three parts together to make the other box end.


The two box ends are different lengths. Use the grey glue areas on the sides of the top and base to work out which end goes where then glue together the four parts as shown. Leave one side open as in the picture.


Glue the head support into place.


Fold over and glue down the ear ends to make double thickness card. Once the glue is dry cut out the ears.


Curve round and glue together the head. Notice how the nostrils stick up. You did cut them out didn't you?


Roll round the two small rectangles to make toothy pegs.


Glue the teeth into the head with approximately three millimetres protruding.


Glue the head push rod to the inside of the head. Line up the end of the long tab with the crease arrowed in the picture.


Assemble the cam follower and glue the tab to the inside front of the box.

Glue the head to the head stand.

Thread the push rod down through the hole and glue the end to the cam follower.


Wrap a coin in a off-cut of card. (I used a UK penny. One Euro cent or Dollar cent is also ideal)

Glue it to the underside of the cam follower. The extra weight will ensure good contact between the cam follower and the cam.


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


Fold over and glue down the big gear and the two cams to make double thickness card. Let the glue dry completely.


Cut out the gear and cams. If you choose to you can cut out the six holes in the big gear to make spokes. It looks nice but is not necessary, you decide!


Glue the teeth of the small gear into place on the grey areas of the gear back sheet. Leave the ends unglued as shown in the picture.


Glue the two gear inners back to back then glue them to the yellow axle lining them up with the grey line nearest the end of the square tube.


Roll round and glue down the teeth round the gear inner.


Glue the ends closed then glue in the tooth ends to complete the gear.


Roll up the two axle tubes lining up the ends with the arrows along their length.

 


Push the yellow round axle into place in the tube

Thread the three lobed cam into place and glue it into place lining it up with the central grey line for alignment.


Assemble the large gear wheel in the same way. The gear lines up with the line closest to the side of the square tube, the cam lines up with the more central grey line.

Make sure that you put the cam on the correct way round, use the picture as a reference.


Fit the two gears into the box. Fold round and glue closed the box fronts to locate the gears into position.


Assemble the bird stand. Glue the tab into place on the grey area.


Thread the bird stand up through the box top and the hippo body.


Glue the tab onto the grey area on top of the hippo.


Glue the bird to the end of the bird stand as shown.


Assemble the handle in three steps.


Complete the model by gluing handle into place.


Turn the handle and bring your model life!

You can see the model in animated action in this Instagram video:


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