Blog Post 5 GRBcelL BioPrinter

This week was spent prototyping and constructing the pump holder for the Bioprinter while drafting more permanent parts out of metal. The Tormach machine and a bandsaw cut aluminum plates into rough parts, and, while familiarizing ourselves with these tools, the group worked on finding a way to rig the prototyped head to the larger gantry system. In the meantime, a laser cutter was used to bore out a square hole into the plexyglass case such that a temperature regulating fan, thermocouples, and air filters could regulate the inside of the bioprinter. Training for the laser cutter went by quickly while different metal parts were arranged in Fusion 360 to stress and strain test the practical ways the gantry head could be put on the machine. By the end of the week, a cold saw was used to cut the aluminum crossbeams needed to mount the metal head onto gantry. The last odd job that was attempted was finding a way to connect limit switches to the machine. A few ideas were drafted but we held off on doing any final construction. Towards the end of the week, the group focused on documentation, lining up extruder heads we snapped pictures of the progress we made. On the final day, a new circuit board known as the TinyG arrived, and, unlike the Arduino circuit boards we were using, now we could gain motion in more than just the X, Y, and Z planes, with the TinyG we could move the gantry system in X, Y, Z, and the syringe’s plunge.

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