So I am somewhat disappointed in the finish that my Superfly gives me. I make some pretty large parts 10"x10", 6"x20" etc. While the actual surface finish is quite good, I do get very distinct lines on the edge of the tool path. No amount of overlap, IPM, or direction change can seem to remove them entirely. If the parts I were making were only 3" wide, it would be great. I was thinking about looking at a facemill, to see if that behaved any better. Does anyone have any recommendations?
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Jason --CNC Newbie--
Don't have to be too bright to be me :)
bluehandsvideo on youtube
OD60mm Facemill + 1(one) SEHT1204 PCD insert + 0.05mm doc finish cut = mirror-like finishes.
ps. omit using all 4 inserts, just use one.
Thanks to all those suggesting to tram the mill first. When I had done the initial setup, it was slightly less than.001. I haven't really crashed it, but it was about by about .004 along the X travel axis. I was able to dial that in quickly, but Y is .004 out. That's disappointing. Maybe I can get some thin shimstock or an old feeler gauge and stick it in to the bottom (or the top) of where the head swivels X-axis?.
Jason --CNC Newbie--
So I will answer my own question, and yes the feeler gauge works. Because of the distance from the quill to the face where the gauge is, I thought it would take something different than what is measured. I started off small, .0015 but that barely made a perceptible difference. I ended up .004 shim to take out .004 of nod. A note to anyone trying this: Get the shim inserted first and get the nod corrected first. I had to loosen up the two bolts fairly far to get enough play to get the shim in easily, and that caused the head to move around quite a bit.
Jason --CNC Newbie--
try swapping drivers and see what happens . I've changed a couple since buying mine and they are cheap enough to replace . Otherwise check for loose connections (everywhere) , a while back I scratched my head for days before finding a loose wire and the problem was solved . It was arcing just enough to make the axis move but it didn't sound right and would lose steps
Mine does not.
Jason --CNC Newbie--