Happy Christmas everyone. Having nothing better to do I took apart the X axis of my House of Tools (Cdn. company now gone) equivalent to the Grizzly Tools G3616 mill. Very disappointed to find that the oil channels are very poorly done. After watching lots of youtube videos it's clear that the channels should have been carved at an angle across the ways rather than straight so that the oil would more easily spread across the surface. Also it seems the good Bridgeports have a hole to bleed the oil down to the tapered gib and the gib itself has a hole and a channel to spread the oil on both sides of the gib so that the moving surface is lubricated. The builders of this mill thought the waterfall effect would be good enough and certainly the pool of oil under the dribble slot shows there was a waterfall. I don't have an issue with drilling a hole through the tapered gib nor grinding a small slot along both sides. I can even see drilling a hole in the waterfall slot at the middle point there so that I have a hole that would match up with the tapered gib. On the non-gib side just a hole I guess. But how do I block the slot so the oil doesn't fall off the edge. Looking at the oil channel it's clear that not much reaches the near end. Probably because it takes the easiest exit off the side. The oil injection point is at the far end in the photo. (Mill LH Side). Just use epoxy? Can't really braze it closed. Maybe for a manual mill the lack of lubrication isn't an issue but for CNC running 150ipm (3810mm/min) lubrication is kind of important.
Thanks for any suggestions. John
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