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workshops:prototypes:cardboard_claw [2019/12/04 17:24]
pmusk [Step 9: Join the claw arms to the end pieces] 		workshops:prototypes:cardboard_claw [2023/06/01 20:45] (current)
Michelle Brown ↷ Page moved from workshops:prototypes:2022-23delivery-lasercutcovers:cardboard_claw to workshops:prototypes:cardboard_claw
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 ======Cardboard Claw ====== ======Cardboard Claw ======
  
-{{ :workshops:prototypes:cardboard_claw:img_9956.jpg?nolink&400 |}}+{{ workshops:prototypes:2022-23delivery-lasercutcovers:cardboard_claw:img_9956.jpg?nolink&400 |}}
  
 This workshop was devised by Peter Musk to address a brief to produce a STEM activity to suit all ages, that could be run by unskilled facilitators working without tools or glue, and costing less than $2.00 pp. This workshop was devised by Peter Musk to address a brief to produce a STEM activity to suit all ages, that could be run by unskilled facilitators working without tools or glue, and costing less than $2.00 pp.
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 ===== Step 1: Check for fit ===== ===== Step 1: Check for fit =====
  
-{{ :workshops:prototypes:cardboard_claw:img_9975_syringes_and_tube.jpg?nolink&600 |}}+{{ workshops:prototypes:2022-23delivery-lasercutcovers:cardboard_claw:img_9975_syringes_and_tube.jpg?nolink&600 |}}
  
 Locate the parts required: two syringes, and a length or plastic tubing. Locate the parts required: two syringes, and a length or plastic tubing.
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 ===== Step 3: Fit the syringes into the handle ===== ===== Step 3: Fit the syringes into the handle =====
  
-{{ :workshops:prototypes:cardboard_claw:img_9961_syringes_in_handle.jpg?nolink&600 |}}+{{ workshops:prototypes:2022-23delivery-lasercutcovers:cardboard_claw:img_9961_syringes_in_handle.jpg?nolink&600 |}}
  
 It helps if you fold the handle first along the score lines, and then unfold it again. This way you can be sure it will close easily when the internal pieces are in place. It helps if you fold the handle first along the score lines, and then unfold it again. This way you can be sure it will close easily when the internal pieces are in place.
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 Fold the handle along the scores to close it over the syringes (making sure the flange fits into the slots on both sides), and fix a 100mm zip tie through the holes to lock the bottom syringe in place. Fold the handle along the scores to close it over the syringes (making sure the flange fits into the slots on both sides), and fix a 100mm zip tie through the holes to lock the bottom syringe in place.
  
-{{ :workshops:prototypes:cardboard_claw:img_9962_first_zip_tie.jpg?nolink&600 |}}+{{ workshops:prototypes:2022-23delivery-lasercutcovers:cardboard_claw:img_9962_first_zip_tie.jpg?nolink&600 |}}
  
 ===== Step 4: Attach the claw yoke ===== ===== Step 4: Attach the claw yoke =====
  
-{{ :workshops:prototypes:cardboard_claw:img_9963_adding_yoke.jpg?nolink&600 |}}+{{ workshops:prototypes:2022-23delivery-lasercutcovers:cardboard_claw:img_9963_adding_yoke.jpg?nolink&600 |}}
  
 The claw yoke has a slot that fits the barrel flange of the top syringe, and two holes that will align with holes in the top of the handle. The claw yoke has a slot that fits the barrel flange of the top syringe, and two holes that will align with holes in the top of the handle.
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 It comes as two identical parts, one that goes underneath the syringe, and the other that goes on top. It comes as two identical parts, one that goes underneath the syringe, and the other that goes on top.
  
-{{ :workshops:prototypes:cardboard_claw:img_9965_seeond_yoke_piece.jpg?nolink&600 |}}+{{ workshops:prototypes:2022-23delivery-lasercutcovers:cardboard_claw:img_9965_seeond_yoke_piece.jpg?nolink&600 |}}
  
 Fit both parts of the yoke around the syringe, and slide them down into the top of the handle so the holes for the zip=tie align. Fit both parts of the yoke around the syringe, and slide them down into the top of the handle so the holes for the zip=tie align.
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 =====Step 5: Set out the back end piece ===== =====Step 5: Set out the back end piece =====
  
-{{ :workshops:prototypes:cardboard_claw:img_9966_2_yokes_and_end.jpg?nolink&600 |}}+{{ workshops:prototypes:2022-23delivery-lasercutcovers:cardboard_claw:img_9966_2_yokes_and_end.jpg?nolink&600 |}}
  
  
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 =====Step 6: Set out the claw arms ===== =====Step 6: Set out the claw arms =====
  
-{{ :workshops:prototypes:cardboard_claw:img_9968.jpg?nolink&600 |}}+{{ workshops:prototypes:2022-23delivery-lasercutcovers:cardboard_claw:img_9968.jpg?nolink&600 |}}
  
 The claw arms fit in between the end pieces, so lay them out accordingly, aligning the holes as best you can. The claw arms fit in between the end pieces, so lay them out accordingly, aligning the holes as best you can.
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 You can now lay the front end piece in place, and get the paper fasteners ready to join everything together. You can now lay the front end piece in place, and get the paper fasteners ready to join everything together.
  
-{{ :workshops:prototypes:cardboard_claw:img_9969_pin_layout.jpg?nolink&600 |}}+{{ workshops:prototypes:2022-23delivery-lasercutcovers:cardboard_claw:img_9969_pin_layout.jpg?nolink&600 |}}
  
 =====Step 8: Join the yoke to the claw arms ===== =====Step 8: Join the yoke to the claw arms =====
  
-{{ :workshops:prototypes:cardboard_claw:img_9971_first_two_pins_in.jpg?nolink&600 |}}+{{ workshops:prototypes:2022-23delivery-lasercutcovers:cardboard_claw:img_9971_first_two_pins_in.jpg?nolink&600 |}}
  
 Push the split pins (or paper brads) through the slot in the yoke, and the inner holes in the claw arms.  Push the split pins (or paper brads) through the slot in the yoke, and the inner holes in the claw arms. 
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 ===== Step 9: Join the end pieces to the claw arms ===== ===== Step 9: Join the end pieces to the claw arms =====
 +
 +{{ workshops:prototypes:2022-23delivery-lasercutcovers:cardboard_claw:img_9972_all_pins_in.jpg?nolink&600 |}}
 +
 +You can now fix the claw arms to the end piece with the last two paper fasteners. 
 +
 +Align the holes in the ends of the claw arms with the holes in the end piece (making sure the plunger flange is fitted into the slot provided), push the split pins through and bend the legs down as before. Thus time making a tight fit is preferred.
 +
 +
 +===== Step 10: Operational tips =====
 +
 +When you have finished assembly, the claw arms will be wide apart. Pulling down on the syringe at the end of the handle will pull the end piece towards the handle, and bring the claw arms together.
 +
 +If things get stuck
 +  * check the pins that go through the slots in the yoke can move freely - the less binding here, the better.
 +  * after a while, the claw arms might not move as far as they should - this is a sign that a n air bubble has formed in the system. Unfortunately, the only way to fix this is to cut the zip ties, and remove the bubble. Sometimes this will mean disassembling and re-fill the tubing and syringes with water. The quicker you push the syringes, the more likely this will happen - slow and steady is best. 
  
  
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 ===== Files ===== ===== Files =====
  
-Cutfiles: {{ :workshops:prototypes:cardboard_claw:cardboard_claw.zip |}}+Cutfiles: {{ workshops:prototypes:2022-23delivery-lasercutcovers:cardboard_claw:cardboard_claw.zip |}}
  
-Instructions (word doc handout): {{ :workshops:prototypes:cardboard_claw:cardboard_claw_assembly_instructions.docx |}}+Instructions (word doc handout): {{ workshops:prototypes:2022-23delivery-lasercutcovers:cardboard_claw:cardboard_claw_assembly_instructions.docx |}}

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