core matt repair

On 2021-Jul-20, at 4:04 PM, Jules Richardson via cctech wrote: In general comment to the topic, I have seen planar arrays ("mats") with some number of randomly-situated wire splices in them. These splices are in the gaps between bit arrays, not interior to a bit array (there isn't enough space between cores). The splices are covered in a tiny dollop of (by appearance) silicon putty for insulation. The number of splices and consistency of appearance suggests they were done at the time of manufacture, while the random distribution suggests they were not part of the manufacturing intention. That is to say, the manufacturing process was itself less than perfect and necessitated 'repairs' so to speak. On the question of manual vs automated assembly, I take it this could involve a mixture. For example, stringing a number of cores onto a single wire for one axis would be easy to automate, stringing the second axis is more difficult. The development of 3-wire topologies over 4-wire would have helped automation, or reduced manual effort, considerably. For stringing, the really awkward aspect of the original 4-wire topology was the sense wire that angled through all the cores at 45 degrees to the X,Y,I wires. This was alleviated in the 3-wire topology where there is just 90 degree and parallel relations.