156B Week 4
Overview of Status of Analysis, Design, Fabrication, Tests, etc.
Right now we have built and tested our 3D printer DIY kit, and removed the previous printer head. We have designed and 3D printed our new printer head designs and need to start testing because before we decide on one.
We have finished our material testing with heat, and are almost complete with testing UV. We have ordered more UV lights and need to build a mount for the extruder and lights.
Accomplishments from Previous Week
We finished building our 3D printer and tested it to ensure it works.
We tested our material with a UV light, but it had negligible affect on our Dragon Skin. We believe that this is because we used a floodlight with 400nm wavelength, which is too close to visible. We purchased stronger UV lights at 280nm and will test the material again once the lights come in. We also finished and 3D printed some of our extruder designs, meaning we can begin testing the extruder with our material.
Goals for Next Week (list names after each item). Use specific and measurable objectives.
Jason and Harrison: Will create new experiments to test with our new stronger UV light at 280nm. If successful, will start creating electrical wiring and extruder wings to power and mount the UV light onto our designed extruder.
Xavier and Roger: focus on the design of the extruder, and if the system can input soft polymer A and B and output a fully mixed A + B out of the nozzle. Will try with the current designs we have, and iterate designs based on the results of the experiments.
Sponsor Comments from Last Meeting and Actions Taken to Address these Comments (indicate date of comments and if via email or in person)
Sponsor comments (online 1/19): Organize thoughts more in meetings and create power points for sponsors
Actions done: We created powerpoint presentations for our sponsors for each meeting
Instructor Comments from Last Meeting and Actions Taken to Address these Comments (indicate date of comments and if via email or in person)
Instructor comments (in person 1/22): Try not to make the mixer blades too thin, because the final version won't be 3D printed and it's hard to manufacture at that precision. Look for already made reamer/spinners on mcmaster.
Actions done: We are looking at mcmaster and purchasing parts that we could substitute as our mixer.
Comments from Other Students in the Class (indicate date of comments and if via email or in person)
None (same as last week)
Risks and Areas of Concern
We need to purchase a portable power source for our UV lights if we decide to use them, and have something that can turn it on or off
Resources or Information Required but not Available
Not a lot of online literature on the curing of dragonskin and the effects of UV
Schedule
Next milestone is finalizing our header
Gantt chart is updated
Budget (list amount spent and amount remaining)
$230 for printer
$50 extruder parts
$20 heater bed
$50 nozzle head and syringes
$30 UV lights for testing
$40 heaters
$400 UV light*2
$30 more mcmaster parts
~$1870 still left in our budget
Progress on Report and Webpage
Report and webpage have been updated