Water Bottle Holder

I decided to take on the request for water bottle holders after completing the QuadStick Mouthpiece Project. My original vision for this project is to have it be one of the attachments for Scarlett and Caroline’s mount project.

Before I could decide on a design to create in Fusion360, I needed some information first. I created a list of questions to ask Mrs. Smith during our next in-person meeting:
Which water bottle/water cup do you typically use?
Do you use only one per patient or will multiple cups
bottles or both be used for the same person?
Are straws used with every patient? Which straws?
What holders are you using now?
What are some issues you are facing with them now?
What is your ideal place for the holder (behind, next to, interchangeable?)
I would also need to bring back a water bottle and/or cup that they use to gather dimensions for the holder.

While I was waiting for the meeting, I had Scarlett send me the mount plate she was working on. I deleted the plate itself so I was left with just the attachment portion which consists of a ball and stick inside of the screwing section. I knew that my water bottle was going to weigh a lot more than the button that was going to lay on Scarlett’s mount plate. I needed to alter the design so it could support this weight. I started by increasing the thickness of the stick and increasing the hole of the screw section each by 2mm. I printed this out. Below are pictures of the altered design:


Below is a picture of the attachment in Bambu:

When I collected this screw section from the printer and removed the supports, the supports ended up taking out part of the threading of the screw. Therefore, when screwing in onto the mount, it wouldn’t tighten to the point where the ball and stick would stop moving. Another issue I figured out was that I didn’t increase the threading dimensions when I went back in and increased the thickness of the stick and the hole. I made this change and reprinted it. It fit onto the mount and after tightening it all the way, the ball and stick stopped moving which was the goal. The file for this screw section is here: Screw Section v2 Below is a picture of the new screw section:

I went on to create a base for the holder by creating a plane off of the stick of the ball. I then created the walls of the holder, and a cutout for the handle. I based my original holder design off of a common hospital cup, pictured below.

And below is a picture of the screw section at the bottom model, in Fusion360:

I then made another verison of the holder, using the same holder itself and the same screw section, but I moved the screw section onto the side of the holder. I ended up printing this version, as I beleived it was most stable. Below is a picture of the screw section on the side model, in Fusion360:

And in Bambu, preparing to print:

Below are pictures of the water bottle holder, printed out:

We gave this water bottle holder to Atrium to test out.

On March 4th we had a meeting with Mrs. Smith. I explained that I had made a guess as to the sizing of the water cup used in hosptials. She noted that she hadn’t thought about using the water bottle holder for these cups, and instead imagined more of a skinny 28oz water bottle. She said she wouldn’t mind trying both, so my next step would be to make one model wider, for the cups, and another model skinnier and taller, for the water bottles.