Introduction: 3D Printed Xmas Billboard.

I try to design table centerpieces for our vacation parties and "3D Written Christmas Billboard" is yet another. Pressing the momentary switch on the straw man of the mannequin presents ternion Christmastime themed images in the style of the old electro mechanical outdoor billboards.

The mechanism uses a louse gear driven six slot Geneva wheel to provide dwell, gyration and positioning of the towers. The mechanism also uses magnetics to aid in snapping the panels in send in arrange to overcome the cumulative backlash from the 3D written cogwheel civilis.

Equally usual I probably forgot a file or two or World Health Organization knows what else, so if you have any questions, please execute not hesitate to comment as I get along bring i batch of mistakes.

Premeditated exploitation Autodesk Fusion 360, sliced using Ultimaker Cura 4.8.0, and 3D printed in Ultimaker PLA and Toughened PLA on an Ultimaker 3 Stretched and Ultimaker S5s.

Supplies

  • Double sided tape.
  • Solder and soldering iron.
  • AWG28 stranded wire.

Step 1: Parts.

I noninheritable the following parts:

  • One N20 150RPM 6VDC gear motor.
  • One 2AAA bombardment pack.
  • Ii AAA batteries.
  • Two micro lever switches (look for "CYT1073").
  • One momentary labor button switch (Jameco 315651 Oregon like).
  • Fifteen 3mm (diameter) by 1.6mm (thick) neodymium magnets.
  • Four M2 past 10mm cap screws.
  • Four M2 kooky.

I 3D written the following parts at the shadowing settings:

  • Two "Axle, Gear, Layabout.stl", .15mm bed height, 20% infill.
  • One "Axle, Geneva Cause and Gear.stl", .15mm layer tiptop, 20% infill.
  • One "Axle, Geneva, Goaded.stl", .15mm layer height, 20% infill.
  • One "Dishonourable.stl", .15mm stratum height, 20% infill, with supports (touching build plate only).
  • Three "Deadbolt, Gear, Tower.stl", .15mm layer height, 20% infill.
  • Four "Bolt, Top To Base.stl", .15mm layer tiptop, 20% infill.
  • Two "Gear, Idler (1.5m 12t).stl", .1mm stratum height, 20% infill.
  • One "Gear, Tower, Center (1.5m 12t).stl", .1mm layer altitude, 20% infill.
  • Two "Pitch, Tower, Ends (1.5m 12t).stl", .1mm layer height, 20% infill.
  • One "Gear, Squirm.stl", .1mm layer height, 20% infill.
  • One "Holland gin Driving and Gear.stl", .1mm layer height, 20% infill.
  • I "Geneva, Motivated.stl", .1mm layer height, 20% infill.
  • One "Skirt.stl", .15mm bed tallness, 20% infill.
  • One "Top.stl", .15mm layer height, 20% infill.
  • One "Tugboat, Center.stl", .15mm level height, 20% infill.
  • Two "Predominate, End", .15mm layer height, 20% infill.

This mechanism is a high precision print and assembly using at times very small precision 3D printed parts in confined spaces with highly meticulous alignment. I printed the gears and wheels using the Ultimaker Cura 4.8.0 "Engineering Profile" on my Ultimaker S5s, which provides a extremely accurate tolerance requiring minimal if some trimming, filing, boring or sanding. However, antecedent to gathering, I still test fitted and trimmed, filed, drilled, sanded, etc. all parts As necessary for smooth motility of moving surfaces, and tight able for non moving surfaces. Depending on your slicer, printer, pressman settings and the colors you chose, more or less trimming, filing, drilling and/operating room sanding Crataegus laevigata be required to successfully recreate this model. I carefully filed every last edges that contacted the build plate to make absolutely certain that all build plate "ooze" is abstracted and that complete edges are fast using fine jewelers files and plenty of patience to perform this step.

This chemical mechanism also uses threaded meeting place, so I used a tap and die put (6mm away 1, 8mm by 1.25) if required for thread cleaning.

Attachments

  • download {{ file.name }} Axle, Gear, Idler.stl
  • download {{ file.name }} Axle, Geneva Drive and Gear.stl
  • download {{ file.name }} Axle, Geneva, Driven.stl
  • download {{ file.name }} Base.stl
  • download {{ file.name }} Bolt, Gear, Tower.stl
  • download {{ file.name }} Bolt, Height To Base.stl
  • download {{ file.name }} Gear, Idler (1.5m 12t).stl
  • download {{ file.name }} Gear, Tower, Center (1.5m 12t).stl
  • download {{ file.name }} Gear, Column, Ends (1.5m 12t).stl
  • download {{ file.name }} Gear, Worm.stl
  • download {{ file.name }} Geneva Drive and Gear.stl
  • download {{ file.name }} Geneva, Involuntary.stl
  • download {{ file.name }} Skirt.stl
  • download {{ file.name }} Top.stl
  • download {{ file.name }} Tower, Halfway.stl
  • download {{ file.name }} Tower, End.stl

Step 2: Tower Preparation.

The hoarding uses trinity towers, two "Tower, End.stl" and uncomparable "Tower, Center.stl". I chose to decorate our towers with free downloaded Christmas images. I selected landscape painting (as opposed to portrait) oriented images since the towers broadly bring home the bacon a 5 (tall) by 7 (wide) landscape aspect ratio. I then loaded to each one image into a paint program and scaled all to 71mm tall by 105mm wide. Once scaled I 2D printed the images and cut gone the supernumerary. With the images ready, I performed the following steps:

  • Placed two strips of threefold sided thin tape on each side of the left column (red tower as appears in the images).
  • Adhered the left edge of the image to the unexhausted edge of the tower, then ironed in situ.
  • Cut the remnant of the see from the tower.
  • Placed two strips of double sided thin tape recording along each slope of the right tower (blue pillar as appears in the images).
  • Adhered the right edge of the remaining image to the right march of the tower, then ironed in place.
  • Trimmed the remainder of the image from the pillar.
  • Placed two strips of double sided thin tape connected each side of the center tower (green column as appears in the images).
  • Centered the difference of the image on the tower, the ironed in place.
  • Trimmed the excess from the tugboat.

I repeated this procedure with the remaining two images on the left over two sides of the towers.

Step 3: Top Assembly.

To assemble the top, I performed the following steps:

  • Using a flat punch, I pressed three neodymium magnets into the left loom fashioning bound the polarity of the magnets matched.
  • I repeated this process with the center and right towers, again making certain the sign of all magnets matched.
  • Using a monotonic punch, I ironed sextet (cardinal in from each one jam) neodymium magnets into "Top.stl" matching the polarity of the towers.
  • Slid the center tower onto the top assembly.
  • Ironed "Gear, Tower, Center (1.5m 12t).stl" onto the center tug such that the elongated tooth aligned with the face on the tower I desired to be the initial image.
  • Secure the gear in place using one "Bang, Gear, Tugboat.stl" making certain the tugboat revolved freely.
  • Positioned one "Gear wheel, Idler (1.5m 12t).stl" onto the base assembly and secured in place with one "Axle, Pitch, Bu.stl" making foreordained the gears rotated freely.
  • Continual this process with the remaining idler gear wheel and axle again making in for the gears turned freely.
  • Slid the left loom (bloody in the images) onto the top assembly.
  • Pressed one "Gear, Tower, Ends (1.5m 12t).stl" onto the tower fashioning confident the tower epitome allied with the focus tower image.
  • Secured the gear in situ victimisation one "Bolt, Gear, Tower.stl" qualification sure the towers rotated freely.
  • Perennial the previous two steps for the remaining hul (blue in the images).

Step 4: Base Assembly.

To assemble the lowborn, I performed the following steps:

  • Attached the two micro lever switches to "Base.stl" using the four M2 cap screws and M2 nuts.
  • Positioned "Geneva Drive and Gear.stl" connected the basis assembly, and secured in place with "Axle, Hollands Drive and Gear.stl" making certain the gearing rotated freely on the base.
  • Positioned "Gear, Worm.stl" on the base assembly and secured in place by sliding the gear motor axle into the worm gear motor axle cakehole.
  • With the Geneva drive and gear positioned as shown, placed "Geneva, Involuntary.stl" onto the foundation assembly and locked in blank space with "Axle, Geneva, Driven.stl".
  • Secured the battery bearer to the base assembly victimization image sided tape making certain the on / off switch was accessible through the window on the bottom of the base assembly.
  • Soldered a wire from the common terminal of the Geneva driving force micro jimmy switch to the common terminal of the center tower switch.
  • Soldered a wire from the normally nonopening terminal of the Geneva drive micro lever switch to the normally stoppered pole of the center tower switch.
  • Soldered the battery holder black wire to the normally closed terminus of the center tug micro lever switch.
  • Soldered the assault and battery holder red cable to the gear drive "+" fatal.
  • Soldered a wire from the nerve centre tugboat micro lever switch common terminal to the gear motor "-" terminal.
  • Soldered a 10mm length of wire to one terminal of the momentaneous push button switch.
  • Soldered a 10mm distance of wire to the remaining terminal of the fleeting push button switch.
  • Soldered the free end of same of the 10mm lengths of wire from the short push clitoris switch to the Holland gin drive little lever electrical switch usual terminal.
  • Soldered the free closing of unexpended 10mm lengths of wire from the momentaneous push button switch to the Geneve drive small lever switch normally unreceptive depot.

At this point, I installed two Abdominal aortic aneurysm batteries in the battery holder, turned connected the battery holder switch, and made certain the Geneva drive wheel rotated clockwise as viewed from the best of the gear.

Tread 5: Final Assembly.

For final assembly, I performed the following steps:

  • Placed cardinal AAA batteries in the battery holder.
  • With the Geneva drive gear positioned atomic number 3 shown, and the long tooth on the center towboa gear positioned as shown, slid the teetotum assembly onto the substructure assembly, and so secured in situ with four "Bolt, Tipto To Unethical.stl".
  • Turned on the battery pack and adjusted both micro lever switches until the mechanics stopped.
  • Pressed the momentary push shift and made certain the mechanism rotated through every last three panels then stopped.
  • Removed the exceed.
  • Positioned the fugitive exchange in "Fudge.stl", past slide the skirt down over the base assembly.
  • With the Hollands drive gear positioned as shown, and the elongated tooth on the nerve centre tower gear positioned as shown, slid the teetotum fabrication onto the base assembly, then secured in place with 4 "Bolt, Upside To Base.stl".

And that's how I 3D written, assembled and tested "3D Printed Noel Billboard".

I hope you enjoyed it!

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