The 19.67" measuring block is made for the 0.25" aluminum stocks. The purpose of making a measuring block is to measure the bent aluminum stocks and possibly hammer the aluminum against the block to reach the desired shape.
Good news: machine shop E123 is now open for longer hours:
M 3:00-5:00 PM
T 3:00-10:00 PM
W 3:00-5:00 PM
TH 3:00-10:00 PM
F 3:00-8:00 PM
The minor crisis surrounding the new material and its difference from the old material was discovered and settled within the last week. There should be enough of the old material to make the entirety of the bends required for the new track. Other additions to the new track, such as magnets and the corrugated metal strip, are in the process of being finalized. Alterations will be made as necessary to the track after the bends have been made.