A claw is a mechanical device that can grab or pick up objects. In my previous blog posting I made a simple mechanical claw and a 3D mechanical claw. https://papercraftetc.blogspot.com/2021/07/a-stem-project-simple-mechanical-claw.html In the this posting, I will make an amusement park arcade game using a smaller version of the 3D mechanical claw.
The claw game is made up of two boxes that are glued together. The boxes were designed with triangular supports to make the box sturdy. The upper box has a track that the claw must follow. The claw is used to pick up pompoms and deliver them to the trap door area. When the claw is released, the pompom falls into the dispenser area to reward the player.
An Amusement Park Arcade Game made with a 3D Mechanical Claw
The claw in action. Push down on the claw arm to pick up the pompom and push up to release the pompom.
Here is the PDF. I used 65 lb. cardstock. Six mini sized brads are needed to make this 3D mechanical claw. I purchased the mini brads at Michaels.
Here is the .Studio file.
Here is the SVG.
Make the Upper Box
Layout the pieces to make the upper box.
Crease all of the dotted lines of the upper box except the trap door. It is best to leave this uncreased until the end because you want to be able to angle the trap door correctly.
Apply glue to the upper tab of the window.
Adhere the upper and apply glue to the lower tab of the window as shown above.
Adhere the window at a right angle to the trap door base.
Apply glue to the three tabs on the trap door base and the bottom tab of the side window.
Adhere the bottom tab of the trap door base to the side piece. Slide the left tab of the trap door base piece into the side piece as shown above.
One side has been inserted. Repeat for the other side.
Adhere the side window tab to the base.
Completed side. Repeat the above steps to adhere the other side.
Apply glue to the top of the trap door base.
Adhere the track piece on top of the trap door base. Set this aside.
Make the Lower Box
Layout the pieces to make the lower box.
Crease all of the dotted lines of the lower box.
Apply glue to the bottom tab of the window. Adhere it to the base of the lower box.
Apply glue to the upper back tab of the box as shown. The glue is not placed in the triangular area on each side of the tab These triangles need to be left unglued so that an adjoining piece will be slid into this area.
Apply glue to the three tabs on the side of the lower box.
This tab is slid into the side of the box as shown above.
Glue the top triangle.
Adhere the triangle and repeat the above procedure to glue the other side of the box.
Completed lower box.
Apply glue to the upper edge of the lower box.
Adhere the upper box onto the lower box.
This claw uses mini sized brads which I purchased at Michaels.
Layout the pieces to make the small 3D mechanical claw and six mini brads.
Bend the semicircle(dotted line) at the bottom of each claw at a right angle to the claw. Glue two of the claws together to make a two layered claw with a circular base.
Crease the body and pull arm pieces as shown.
Insert a brad into the hole of the body piece as shown above. Repeat for the other two holes.
Insert the arm in the upper hole of the brad. Repeat for the other two holes.
Splay the brad apart and put one prong on each side of the hole as shown above. Repeat for the other two brads.
Cut the prongs of the brad to size.
Insert a brad through the other arm hole and them through the slider section of the body.
Put the pull arm piece on top and thread the brad through the pull arm hole.
Splay the brads and cut the prongs to size.
Apply glue to the two tabs on the triangles and the tab on the pull arm. Adhere together to form a triangular prism. Check the tension on the brads to make sure that the claw can freely move up and down.
Splay the center tabs of the triangle upward and apply glue inside the tabs.
Adhere the circle as shown above.
Apply glue to the circles and adhere together. Please wait for the glue to dry before operating the claw.
To close the 3D Mechanical Claw, pull downwards.
To open the 3D Mechanical Claw, pull upwards.
Insert the claw into the box by lifting up one side of the H.
Add some pompoms and you are ready to play.
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