Last Date.
Introduction: Last Date.
My father once told me <PERSON> song "Last Date" was playing at the time he asked my mother to marry him on their "last date" and, well, she said yes!
This model, "Last Date", is in remembrance of their "last date" and their forever marriage until their passing. We love and miss you both and wouldn't be here if not for your "Last Date"!
As usual I probably forgot a file or two or who knows what else, so if you have any questions, please do not hesitate to comment as I do make plenty of mistakes.
Designed using Autodesk Fusion 360, sliced using Ultimaker Cura 4.7.0, and 3D printed in PLA on Ultimaker S5s.
Supplies
* Soldering iron and solder.
* Thick cyanoacrylate glue.
* Sandpaper or emory cloth.
* Lite machine oil.
* AWG28 stranded wire.
* Indelible ink pens (blue, red).
* Double sided tape.
Step 1: Parts.
I acquired the following parts:
* One N20 100RPM 6VDC gear motor.
* One 2AAA battery holder with on/off switch.
* Two AAA batteries.
* One normally open momentary pushbutton switch (must fit a 13.00mm hole).
* One micro lever switch (search for "CYT1073")
* Thirty six inches of 1.15mm (3/64") diameter music wire.
* Two 3mm (diameter) by 1.5mm (thick) neodymium magnets.
* Two 6mm (diameter) by 1.5mm (thick) neodymium magnets.
* Four M2.5 by 16mm cap screws.
* Four M2.5 nuts.
The attached file "Parts.pdf" contains the name, quantity, infill, layer height and support of all 3D printed parts I printed for this mechanism. Note parts with a ".3MF" extension are dual extrusion prints.
This mechanism is a high precision print and assembly using at times very small precision 3D printed parts in confined spaces with highly precise alignment. I printed the gears, levers, arms, cams and wheels using the Ultimaker Cura 4.7.0 "Engineering Profile" on my Ultimaker S5s, which provides a highly accurate tolerance requiring minimal if any trimming, filing, drilling or sanding. 654
However, prior to assembly, I still test fitted and trimmed, filed, drilled, sanded, etc. all parts as necessary for smooth movement of moving surfaces, and tight fit for non moving surfaces. Depending on your slicer, printer, printer settings and the colors you chose, more or less trimming, filing, drilling and/or sanding may be required to successfully recreate this model. I carefully filed all edges that contacted the build plate to make absolutely certain that all build plate "ooze" is removed and that all edges are smooth using small jewelers files and plenty of patience to perform this step.
This mechanism also uses threaded assembly, so I used a tap and die set (6mm by 1, 8mm by 1.25) if required for thread cleaning.
Step 2: Pushrods.
To create His pushrods, I performed the following tasks:
* Cut a 160mm length of music wire.
* Created a 90 degree bend, 15mm long, in one end of the cut length of music wire.
* Placed the 15mm bend into the hole in "Jig, His, Pushrod.stl".
* Created a 90 degree bend in the remaining end of the cut length of music wire.
* Cut the last 90 degree bend to 5.5mm in length.
* Removed the wire from the jig.
* Sanded the cut ends smooth.
To create Her pushrod, I performed the following tasks:
* Cut a 150mm length of music wire.
* Created a 90 degree bend, 10mm long, in one end of the cut length of music wire.
* Slid the straight end of this wire into the slot in "Jig, Hers, Pushrod.stl", then placed the 10mm bend in the hole in the jig.
* Bent the straight end up 90 degrees.
* Cut this bend to 3mm in length.
* Removed the wire from the jig.
* Sanded the cut ends smooth.
Step 3: Base.
To assemble the base, I performed the following steps:
* Attached the two micro lever switches to the base using the 2.5mm bolts and nuts.
* Placed "Arm, His, Pushrods.stl" into the base assembly. 784