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Some of us worked on building a slider mechanism to attach to the piston that goes up and down, using the t-nuts inside the towers.  We also drilled new holes in the front of the c channel that goes around the tower so they are the same on each section of c channel.  Other people worked on finding air tanks and putting them in the bom. Because we would have gone over budget, the air tanks are in the ELECTRICAL BOM, not the grabber BOM.  We also came up with an idea to arrange the pneumatic tubing; the tubing would wrap around a vertical pole of some sort, when the grabber mechanism lifts up, the tubing will expand around the pole, similar to a spring.  Lastly, we finished the weight calculations.  

The holes on the sides on the c channel are not aligned to the grooves in the 8020 so we are having trouble attaching them to the sides of the 8020.  This can easily be fixed by drilling new holes so this is not a very big problem.  

continue working on prototype, specifically making the slider holes on the sides of the c channel larger.  

continue working on routing the tubing, maybe work on prototype??

yes