My dad had one of these in the corner of the garage all the time I was growing up, I don't think it ever got used.
I draw in SketchUp. The small parts are connected by a sprue, to get them above the minimum size allowable.
I searched the web for pictures of older machines, and this is what I based my balancer on.
And here is the lift I used for a prototype.
The completed set, including jack stands, impact tools, and floor jacks.
I included three sets of wheels, and four sets of tires
Here is what the 3d printed items looked like after washing in soap and water to get off the support residue. They still need a little scraping with a knife to get some of the support material removed, see here as the white chalky substance.
The priming usually shows up a few more areas that need cleaned. At some point in the process, one of the jack stands went missing when it broke from the sprue.
With details this fine, only FUD or XFD will work. I use FUD as it is quite a bit less expensive. From what I have seen though, XFD is much nicer, I just have not had a project where I could justify the extra cost.
I built a small display box to use as the shop, and test fit the tools around the shop.
The wheel rack on the left was printed on my home printer.
Here is an overall shot of the complete tire shop. The floor and walls are paper glued to the wood. I designed both in photoshop.
The signs are images I have picked up over the years, some were cleaned up with photoshop. The tool panels on the walls were done the same way.
Link to the vintage shop on Shapeways: shapeways vintage-tire-shop-stuff
I also offer the vintage shop with an adjustable lift, so the axle supports can be place where needed, so you could put a car up on the lift. Here is a link to that assortment: shapeways vintage-tire-shop-stuff-with-usable-lift
Link to the modern shop on Shapeways: shapeways modern-tire-shop-stuff This group has two different lifts.
The tool box is another item I have used before.
Other details I have printed at Shapeways:
Since I have been absent the last couple months, and have 16 draft posts I am working on, I hope to get three posts up over this long weekend.