Prototpying - Phase 1

Last week I was able to work with a TA from the AFL machining lab and got a lot of suggestions and improvements to my simple design. He recommended some different choices as far as the machining process goes and how I can utilize varies machines for more accuracy and a greater chance of success.

I started working with him on a CNC milling machine learning the basics of G-code. I've work very little with such advanced machinery, however, I feel like if I had an X and Y and Z axis knob I would do just fine. I created a program that does what I need it too.

Some problems that first started out were the machining speeds, I had some ideas from working with this type of plastic before, however, you never really know until you cut some passes and hold the objects in your hand if you're cutting too slow or two fast. I was able to solve this problem relatively quickly by trial and error and examining the cuts.

After my last exam tonight, I should be able to move this phase of the process to the top of my priority list and start making some pieces for the air sampler.

The TA also thinks he might have a solution to the valve idea that I had. It will be similar to the latch theory that was brought up during the lab meeting.

Machining

Today I got another certification and clearance in a better machining lab on campus. I'm not allowed to use every machine all willy-nilly, however, I have access to high quality and newer machines.

I'm working with one of the TA's on duty at the AFL to work my design, and machining process. Hopefully with his help this will move along quite quickly. Once again, I'm rather excited to get my hands dirty.

Another design option crossed my path today, what if a latch valve existed? Something like the latch on a metal linked watch band, or something like a hose clamp. This would allow a quick connection and an ability to be heated.

Either way, the valves will be ordered this week, and progress will be picking up. My goal is to have a working representation of my product for the project partner to see. This by no means will be a perfect final draft, as I hope that would have steal tubing, permanent connections, and a means to take multiple samples at once.