While making my final draft CAD model in VectorWorks I ran into some challenging problems, especially when creating the mouth with two NURBS curves. But before I tackled that, I wanted to get the basic bent shape of the pill bottle like the initial sketch.
I used the proportions of an actual pill bottle, 2″ x 1.5″ After making a circle the diameter of an actual pill bottle, I extruded it to the corresponding and used the Deform tool to create the bent shape at the top and the bottom.
Then, using two NURBS Curves I created the shape of the mouth,
And a bend to the bottom of the bottle.
I needed to connect both curves to create a single object because I couldn’t extrude two lines without making it a solid shape, but in the process I ran into a lot of problems trying to combine the two end points. I was able to combine one side but VectorWorks would not let me connect the other end no matter what I did.
I tried to simply move the end points onto each other and combine into surface,
but I kept getting the error shown above.
Trying again with the NURBS curve I was able to connect the top end points but then once I tried connecting the bottom ones, I got the following error.
Having spent way too much time trying to address the numerous NURBS problems, I started remaking the mouth with angles.
After playing around with angles, straight lines connecting them, and reshaping them I ended up with two versions of the mouth but settled on the left one.
Then it was time to down size the mouth to the pill bottle.
Below is the process for removing the bottom of the model by subtracting a square from the curved piece.
I realized the curve I put on the back of the mouth was in the wrong shape.
So I went back in and added the curve in the other direction.
Positioned it in a place where I thought the mouth should go,
I was happy with the result, however, I wanted to try and add more curves to the back of the mouth so that the angle wouldn’t look so machined.
Using the fillet edge tool, the back, curved end of the mouth was effectively softened around the edges.
I placed it within the new but nearly identical pill bottle and exported my file as an .stl to move it to Ultimaker Cura in order to 3D print.
With the file saved to High quality I started to print, not noticing until half way through that the top of the mouth wasn’t going to print properly. I kept going none-the-less because I needed to get a prototype primed and painted.
Once it was done printing I immediately noticed that the mouth was not cut all the way through on the sides.
Not to mention all the plastic that dripped through the part that failed during the printing.
I tried getting a picture where you can see the mouth looking funky.
After slicing away at the stringy part inside the mouth, I placed the cap on top and thankfully, I had measured it just right so that it fit with ease.
But I didn’t want the logo on the cap so I started to sand it off with a high number grit. It looks white in this picture.
But it actually looks like this.
So I tried many other grades of sandpaper.
And eventually ended up with this. So I’m now considering putting a vinyl sticker on the top or painting it white.
Now it was time to primer.
And after an hour or two I spray painted it orange.
But this is not the exact color I want.
I learned a lot for this weeks assignment.
- I want to try to mill this piece on the 4 axis
- The model I’ll try to print next will be the first mock up without the rounded edge mouth.
- I need to fix the model so that it is sturdier when placed on the table (I think the first mock up will stand on it’s own better than this one.
- I want to try dying delrin after milling on the 4 axis
- Vinyl stickers need to be designed and placed properly.
- Pills as a stand and as decor need to be modeled eventually.
- Need to focus on what orange I want if I’m going to continue to 3d print.