All posts by William Davison

About William Davison

William Davison, Jr. moved from Northern Nevada to the Denver, Colorado area to work in the aerospace industry after obtaining his electrical engineering degree from University of Nevada, Reno. He keeps busy with his many hobbies (old BMW car restorations, LEGO Robotics and Halloween effects/costumes). He loves to restore, make and create. If he isn't doing something in the shop, then you can find him riding his 1956 BMW R50 motorcycle. See more of William's photography at

Introducing the LEGO Zoltar!

The movie Big was released on June 3rd, 1988… 30 years ago almost! Tom Hanks (the main character) goes from being a kid and wishing to become an adult. Of course he still has the mind of a kid and the adventure begins. If you haven’t seen the movie I suggest it as a throwback movie night with a loved one. It was one of my favorite movies that inspired me to always be a kid at heart, play with toys and enjoy building LEGO at any age.

I really liked that movie… the Zoltar Arcade game grants him his wish after a coin is strategically shot into Zoltars mouth.  Changing him from a kid into “Big” adult over night!

Inspired by the movie, the Zoltar Boardwalk game and after I searched and searched and never found a Zoltar made with LEGO bricks. I decided I would make the first LEGO Zoltar… so Introducing the LEGO “Zoltar the Magnificent!”

Please feel free to share and repost! Trying to get this to be on Jimmy Fallon… in June!

More programming to do, so i will post more photos and video as I get him done.

IMG_0133 main photo

Design and photos by William Davison, Jr. #LegoZoltar


Working on getting the Face Just Right.


Mouth closed. and detail of the necklace.


I worked on this build over four months, and just finish up the head, mouth and movements this past weekend.


Just the frame.


Side detail and the coin shoot details (Yellow far side).


Other side detail.


Wheel on the left moves the coin ramp up or down, the red button center starts the mouth moving, the music and the eyes light up.

Video can be seen here.

I will be programming the RCX controller and making the small paper cards that “Grant your wish!” in the next few days. I will be sure to post a better video showing the coin ramp and how the


CAD to 3D Print

After getting some free time for designing my own CAD item, I decided to make a BMW keychain for my key ring for the 1968 BMW 2002.

Using TinkerCAD I laid out a simple design and exported the STL file.

bmw keychain


Below is the start of my print.IMG_0107

The image below is the slicer program Repetier which converts the STL file into GCode that my 3D printer understands and controls the stepper motors.IMG_0108

Here is the final print.


LEGO Motorcycle with sidecar

857-1: Motorbike with Sidecar

This set came out in 1979. I went ahead and downloaded the instructions and started the build. The original was blue and gray, I went with the all Black styling. The single cylinder engine is basic, there is no suspension but the complexity of the gear to chain and the steering makes this kit a fun build.

I might modify this model and make it based on a 1-3-5 width build instead of the 2-4 6 width build.


Making a Marine


Image result for USMC

A friend’s son is going to boot camp in a few days and will embark on a life changing event. I wanted to make a card with a few USMC saying, but realized he doesn’t know these just yet. In 1997 I made my way to Las Vegas after my active duty as a Marine was over. I still look back at how I learned to be excellent, The pain, the pride, the education, the failures and the restarts. The mindfulness to have persistence in everything challenging. So the quote in the inside of the card is something I believe to be true.

“Excellence is never an accident; it is the result of high intention, sincere effort, intelligent direction, skillful execution and the vision to see obstacles as opportunities.”


Stay motivated!

Image result for Semper Fidelis! 

Travel the Sea

Travel the Sea

By William Davison, Jr.


To travel on the mighty sea

Each wave, an adventure beckoning thee

To see the edge of a new universe

To let your heart be free


As you prepare for your adventure and stow your gear in its place

Look over the bow… lookout into the oceans vast space

Just like the great world mariners on duty,

Sea loving sailors that have gone before you

Be proud’n be bold… gaze out over its beauty

Gaze out over its boundless blue


The sway of these souls, ‘these Salty sailors of the sea’

They travel in good spirit, truly content and free

Happy existing on the rolling waters and warm comforting seas

Free spirits, some may say, but always at peace, when sailing with thee


Now tie the bowline knot well

Hold it tight as you sail, and when you return

Shall your spirit be lifted…

And your mast on an even keel

LEGO Test Car

Sorting my LEGO bricks has been long and not too much fun. But building my favorite old kits has been awesome!

This LEGO kit 8865 The Technic Test Car was one of my largest and most complex kits. I was 14 years old, and I can still remember putting this one together. The head lights pop up, the seats recline and adjust, the transmission is functional and the 4 piston motor is detailed to let your imagination cruise down the street in a very awesome ride.

Year Released: 1988
Advertised Number of Pieces: 892
AnonymousLegoFiend did a great job describing the function and the motor to transmission in action.


Step Stool redo

IMG_0402I saved this little guy from the trash… my old wooden bench was broken (for the third time) and I didn’t trust sitting on it anymore.  I took it all apart, cleaned, steel wooled all the rust and painted.

img_0405.jpgUsing a silicon grease spray I cleaned off all the rubber steps, redid the seat cushion out of an old sweater and put it all back together.

IMG_0407Took about an hour.

Once it was all done, I think it will be a good addition to my work bench out in the garage when I work on my motorcycle and the cars. the really cool thing, the seat top pops up and it has two steps to reach items off my shelves.


All the metal that was chrome was painted and I left the Brown paint as it seemed to be in good condition.IMG_0410IMG_0414