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One of the coolest parts of 3d printing and digital design is rapid prototyping.

 

I was staring at my design trying to figure out what the best diameters and thicknesses for wheels/tires would be, when it hit me that I could simply make some simple cylinders first. Not only for this project, but later ones as well.

 

3 hours later I had a selection of 24 different wheels in 4 diameters and 6 thicknesses.

IMG_20180217_162724.thumb.jpg.2cb0ff5cc4b2fb7d6b887e88578ff0a3.jpg

 

Test fitting them shows that 15mm dia by 6mm thick are the best "stock" option for the Cowboy UV:

IMG_20180217_163106.thumb.jpg.02f57e5bfd668ca6ddbe205be75a8552.jpg

 

The 18mm dia by 10mm thick wheels are too big for the rear wheel well, but don't look too out of place on the front:

IMG_20180217_163148.thumb.jpg.ff40b836ac03c54a30961a026251c885.jpg

 

One of the ideas on my models to make list for this was a "lift kit", which would be a couple of pieces that would glue onto the bottom and lower the axle, so eventually there will be large, thick wheels.

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Had to take some time off from this because Fusion 360 was throwing errors at me that I couldn't figure out what they meant.  Looked at it with a fresh eye last night, finally figured out the vertices that were causing the issues, and figured out some workarounds. Anyway, I got the rear half details finished, and it's off to my printer for a final prototype (well, as soon as my current print job is done in an hour or so.
image.png.8c5e9b05e412c23f19702bcf692c3d84.png

Still have to finish up the detailing on the front, and then it's on to designing the wheels. 

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Details add a lot:

IMG_20180223_161515.thumb.jpg.caa36624cde0d7be24c2408779adf767.jpg

 

Rear end for the 4 door version is finished. Need to finish the details on the front end, then design some wheels.  I expect the wheel designs will go rather quickly.

 

Then on to the front bumper - again, I expect I'll be able to get a couple simple designs done quickly.

 

After that, I'll be creating a rear end for a 2 door version.

 

After that will come the really fun part - designing variants of all the other pieces.

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3 wheel variants done - but only one variant printed. 

IMG_2343.thumb.JPG.ca41212ebbef385166db9f5de1220e6e.JPG

Just realized I never did the gas tank hatch I planned on.  Oh well, I guess that means it's electric and charges wirelessly. ::D:

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Neat!  I'm curious -- is it possible to sand down surfaces of 3D prints like this, to try to minimize the "scan line" effect?

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5 hours ago, Jordan Peacock said:

Neat!  I'm curious -- is it possible to sand down surfaces of 3D prints like this, to try to minimize the "scan line" effect?

It is, as well using various methods of "filling" them in. There are also different methods available for different types of filament - for example, with ABS filament, you can use something called acetone smoothing to smooth out the surfaces.

It can be a tedious effort though, especially on something with lots of small details.   So how much effort I will put into it really depends on what my intended purpose for the print is. Things like my tanks, which will tend to be centerpieces of a tabletop force for a game, I will spend a lot more effort filling and sanding than I will on things that are basically scenery or test prints for various ideas, such as these cars are.  

It is my intention to do up at least one of these Cowboy Utility Vehicles as a centerpiece for a diorama - on that particular print, I will very likely print multiple copies with different filaments and settings, then take the best one of those prints and spend a lot of time prepping it for the best finish possible. 
 

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