What we did this week:
Our electronics came in:

1 xPololu A4988 Stepper Motor Driver, non-assembled, RoHS, 5 pack - $40.00 

1 xTosduino MEGA 2560 - $30.00 

1 xRAMPS 1.4 Assembled, w/o Wires or Connectors - $45.00 

were all ordered from Lulzbot.

The PSU was ordered from Newegg
1 x ($69.99) Thermaltake Tough Power TP-750P 750W ATX 12V 2.3 $69.99

We also determined the Delrin to use and what sheet to buy.

We talked to the company that laser cut our last gear, and they said they can do it for $50/hr. That is because it takes more care and is more flammable than acrylic. 

What we are doing this week.
Today we plan on assembling the electronics we just got, and ordering the Delrin, as well as the plastic for the extruder. When we get the Delrin, we are going to get it laser cut, and then put it on our aluminum gear. We also need to assemble the heat bulb
What we did this week:
We began working on the report as well as our short presentation. We also ordered more parts, mainly the electronics and the heating bulb/mount. We discussed what to do about the cog wheel in terms of manufacturability for it to be metal or not. 

We also CAD'd (is that proper grammar?) and 3-D printed our limit switches, which were a requirment for the design.
Limit switches

What  we plan to do this week:
Assembly the parts we ordered: Power supply, switch board, heating bulb, heating bulb holder

We also need to finish our 5-minute presentation that is on Monday, as well as finish the report
What we did this week:

This week, we worked as a group to come up with the 5 minute presentation that we will have to do for the class. We decided to do it on our heat transfer problem with the table. We also decided to go with the heat lamp and have drawn up a CAD on how it will look, and which fixture/bulb to get. 

We also finished designing the side panels for the frame. These are needed for our safety requirement.

File Size: 2053 kb
File Type: catpart
Download File

File Size: 2995 kb
File Type: catpart
Download File

What we need to do this week:

Once we order the remaining parts, we can finish our assembly and begin testing. The immediate thing that needs to be done is our presentation that is next week, followed by starting the report.