The underside of the fourth (Top) sheet ready to fit. Three M5 inserts fitted to secure the Linear Tone Arm.
The hole routed in this sheet is smaller than the one in the previous
sheet. This is because the platter is a smaller diameter than the stock
Technics, but the PCB requires the larger hole for it to fit. To stop you
being able to see under the platter and in to the well, the top hole
has been made smaller. I chamfered the bottom edge to give a better
looking step from one size to the other.
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