Hi Larry, I remember the last guy who removed unused pads on signal inner-layers because of all that space available for routing between PTHs. You wouldn’t believe how many designed in shorts he created. In reality, thinking in 3 dimensions, you really don’t get much if any extra room by doing this. Brs, Gerry > On Feb 27, 2018, at 12:29 PM, Larry <[log in to unmask]> wrote: > > Ok the customer's main concern is that the board is still Class 3 if the non functioning pads are removed, I can't find anything in the IPC specs that says I can't remove them. The main reason is to free up space for routing on the inner layers. > > Thanks all, > > Larry