Rob ives Combination Lock.pdf

Combination Lock A working lock to cut out and make

An intruiging working model showing the workings of a combination lock. This lock is of the type often seen on bicycle chains. There are 10000 possible combinations on this working model. Fabulous fun and educationl too!

Version 1.00 © Rob Ives / Flying Pig 2004 Please do not make illegal copies of this model, it is very cheap to buy from our website and almost all of the money goes to feed and clothe my family :-) Rob Ives © Rob Ives / Flying Pig 2004. 1 Brickworks Cottages, Broughton Moor, Maryport, Cumbria, CA15 7RU UK tel. 01900 814333, fax. 01900 819610

Instructions You will need a craft knife or other sharp knife, a pair of scissors, some glue and a glue spreader. The best type of glue to use is white school glue (PVA.) First of all print out all five parts sheets onto thin cardboard. Photocopier card is ideal. Leave the ink to dry completely before continuing.

Dashed lines are hill folds

Dotted lines are valley folds

Before cutting anything out, score along all the dotted lines and cut out any holes with a craft knife. Both these jobs are easier to do on full sheets of card. Dashed lines are hill folds, dotted lines are valley folds. Cut along the solid lines. Grey areas show where to glue.

Cut out

Shaded areas show where to glue.

Black lines show where to cut.

Tumbler 1

Tumbler 2

Tumbler 3

Tumbler 4

Choose the combination number for your lock and right the digits in the boxes above.

TheTumblers For each of the four tumblers start by gluing the chosen number to the square bridge between the two tumbler sides. Make sure that the number is lined up very accurately. Once the glue is dry glue the rest of the numbers into place so completing the finished tumbler

Finished tumbler

The Pins and Centre Shaft Assemble the four pins as shown. Glue them into place on the centre shaft before the centre shaft is assembled. Once the glue has dried, roll round the centre shaft and glue it together as shown. Pin

Finally, glue the end of the centre shaft into place making sure that the pins line up with the green mark on the shaft end.

Centre shaft with pins

Combination Lock: Instructions sheet 1

Finished Centre Shaft.

© Rob Ives / Flying Pig 2003

© Rob Ives / Flying Pig 2004. 1 Brickworks Cottages, Broughton Moor, Maryport, Cumbria, CA15 7RU UK tel. 01900 814333, fax. 01900 819610 Please do not make illegal copies of this model, it is very cheap to buy from our web site and almost all of the money goes to feed and clothe my family :-) Rob Ives

Instructions

TheTumblers and Lock Body. Make up the end of the lock and the outer shaft. Be careful to line up the outer shaft with the key hole shape in the lock end. Outer Shaft.

Lock end

Assembling theTumblers. Slide tumbler number one into place on the outer shaft. Make sure that it is the correct way up! Slide the first of the spacers up to the tumbler and glue it into place. Use the grey line for alignment. Make sure that the tumbler turns freely while the glue dries. Repeat the same process with the three remaining tumbler. The flaps on the final spacer glue to the inside of the tube. Once the glue is dry your lock is complete. Make sure you don't loose the combination number!

Combination Lock: Instructions sheet 1

© Rob Ives / Flying Pig 2003

© Rob Ives / Flying Pig 2004. 1 Brickworks Cottages, Broughton Moor, Maryport, Cumbria, CA15 7RU UK tel. 01900 814333, fax. 01900 819610 Please do not make illegal copies of this model, it is very cheap to buy from our web site and almost all of the money goes to feed and clothe my family :-) Rob Ives

Outer Shaft

Pin Pin

Pin

Pin

Inner Shaft

Cut out

Spacer

Cut out

Spacer

Combination Lock: Parts sheet 1

© Rob Ives / Flying Pig 2003

© Rob Ives / Flying Pig 2004. 1 Brickworks Cottages, Broughton Moor, Maryport, Cumbria, CA15 7RU UK tel. 01900 814333, fax. 01900 819610 Please do not make illegal copies of this model, it is very cheap to buy from our website and almost all of the money goes to feed and clothe my family :-) Rob Ives

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Cut out

Spacer

Combination Lock: Parts sheet 2

© Rob Ives / Flying Pig 2003

© Rob Ives / Flying Pig 2004. 1 Brickworks Cottages, Broughton Moor, Maryport, Cumbria, CA15 7RU UK tel. 01900 814333, fax. 01900 819610 Please do not make illegal copies of this model, it is very cheap to buy from our website and almost all of the money goes to feed and clothe my family :-) Rob Ives

Cu t ou

t Cu

t ou

m Tu

ble

r3

t Cu t ou

Cu

t

ou

t

m Tu

bl e

r4

t

e th ue n Gl ose er ch mb nu re. he

9 8 7 6 5 4 3 2 1 0

e th ue n Gl ose er ch mb n u r e. he

9 8 7 6 5 4 3 2 1 0

Cut out

Spacer

Combination Lock: Parts sheet 3

© Rob Ives / Flying Pig 2003

© Rob Ives / Flying Pig 2004. 1 Brickworks Cottages, Broughton Moor, Maryport, Cumbria, CA15 7RU UK tel. 01900 814333, fax. 01900 819610 Please do not make illegal copies of this model, it is very cheap to buy from our website and almost all of the money goes to feed and clothe my family :-) Rob Ives

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Inner shaft end

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Combination Lock: Parts sheet 4

www.flying-p ig .

Cut Line up pins here Out

© Rob Ives / Flying Pig 2003

© Rob Ives / Flying Pig 2004. 1 Brickworks Cottages, Broughton Moor, Maryport, Cumbria, CA15 7RU UK tel. 01900 814333, fax. 01900 819610 Please do not make illegal copies of this model, it is very cheap to buy from our website and almost all of the money goes to feed and clothe my family :-) Rob Ives

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Cut

out

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Outer shaft end

www.flying-p ig .

Combination Lock: Parts sheet 5

© Rob Ives / Flying Pig 2003

© Rob Ives / Flying Pig 2004. 1 Brickworks Cottages, Broughton Moor, Maryport, Cumbria, CA15 7RU UK tel. 01900 814333, fax. 01900 819610 Please do not make illegal copies of this model, it is very cheap to buy from our website and almost all of the money goes to feed and clothe my family :-) Rob Ives