Few more bolts / holes and it's done:

Y-motor mount:
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Z ballscrew fixed end, slightly unusual motor mount. Had to make longer spacer for the bearing support as the existing one wasn't long enough and caused far too much friction.
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My router is accurate, but alas still a bit off square:
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Made a quick nylon seal for additional protection as that bearing gets the most dust being right above the cutter:
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Will post a video and more info tomorrowish.