RGB Trap Pedal

prusaprinters

<p>This is the Trap Pedal off the 1989 Kenner, The Real Ghostbusters, Ghost Trap. The part is the blue rubber part at the end of the yellow hose attached to the Ghost Trap.</p><p>I have modeled this off an existing, intact, Trap Pedal. This will allow you to print off a replacement to restore the toy.</p><h3>Design</h3><p>The toy pedal is made of 4 pieces (not including the hose):</p><ol><li>Pedal Body (Rubber) - Main body</li><li>Pedal Seal (Rubber) - Large ring on the bottom of the pedal, likely there for manufacturing purposes</li><li>Pedal Cap (Hard Plastic) - Cap that plugs the air hole in the middle of the seal</li><li>Pedal Nipple (Hard Plastic) - Nipple seals the air port on the front of the pedal and increases air pressure to the pump assembly</li></ol><h3>Body Models</h3><p>There are 4 models here for the trap pedal body:</p><ol><li>Solid Model - Entire body is one piece</li><li>Filled Model - Body is solid but there is a depression in the base for the cap and seal (for looks)</li><li>Hollow Model - Model is hollowed out with a custom support pillar that can be removed after the print</li><li>Hollow Model (Unsupported) - Model is hollowed out without any custom supports</li></ol><h3>Configurations</h3><ol><li>Solid Model + Nipple</li><li>Filled Model + Nipple + Cap</li><li>Hollow Model + Nipple + Cap + Seal</li><li>Hollow Model (Unsupported) + Nipple + Cap + Seal</li></ol><h3>Getting the Pedal to Work</h3><p>I have printed off a bunch of different models with TPU and have not got one to work yet. I may have my layers too thin (allowing air to escape) or some of the geometry just may not be friendly to TPU.&nbsp;</p><p>My best attempt was with the Solid Model. I printed it with an 8% Archimedean chord infill and an 8% concentric infill. This created air chambers while supporting the body enough to let it hold its shape. The chords seemed to do the best.</p><p>I was able to use a drill bit to pop a hole to the center and insert the tube. I was able to get the doors on the trap to lift halfway with this printing style. I may try to put artificial infill into one of the hollowed out models with a proper air channel going down the middle, or hope someone with a little more talent than myself can modify it to work.&nbsp;</p><h5>Archimedean Chords</h5><figure class="image image_resized" style="width:75%;"><img src="https://media.prusaprinters.org/media/prints/120764/rich_content/abb2e364-85df-4f08-8bdc-7687f1a454b6/chord.png#%7B%22uuid%22%3A%2299d1d268-f767-4e6b-9179-4078142b0d3f%22%2C%22w%22%3A1270%2C%22h%22%3A952%7D"></figure><p>&nbsp;</p><h5>Concentric</h5><figure class="image image_resized" style="width:75%;"><img src="https://media.prusaprinters.org/media/prints/120764/rich_content/043bd306-4b9a-422d-b2f5-4aaeca27358a/sliced.png#%7B%22uuid%22%3A%22b6d020af-d436-4d5c-9e47-34b32b3f889d%22%2C%22w%22%3A1225%2C%22h%22%3A919%7D"></figure><p>&nbsp;</p><p>&nbsp;</p>