Might as well through my two cents worth in. Tom is absolutely correct about no need for a lift being accurate to a thousandth of an inch, it took me, as most of the members know, quite awhile to come to this realization.
A case of needing and wanting is another matter.
After being very disappointed with with two inexpensive routers in my router table I went to a Porter Cable 893. Part of the decision to go with the Porter Cable was the above the table adjustment feature that turned out to be of no value when the router was mounted beneath the table. This was, as I have pointed out beforer, due to the debris getting between the motor and the case that the motor slides up and down in. The debri would bind things up and no satisfactory adjustment could be made. So, then I was confronted with an issue that had only one good remedy, which was a good lift. I purchased the Incra Mast R lift which was the best decision that I could have made at the time. At least that was thinking.
I could have gone with the Triton instead of the PC but in that I didn't, well it was to late after buying PC.
Even though the very fine adjustments are not really of great value in most cases, due to my quirk of still thinking in terms of more precision than is needed the Incra lift was a good choice for me and I have never been sorry for it. The less powerful PC motor has done everything that I have asked of it with no strain at all.
The combination of the Mast R lift, the Wonder Fence and the Incra 17" LS system makes an extremely good set up. Do have to admit that the cost of all of this stuff may well be more that many people want to spend. What one buys depends on what one wants wants to do with their router and what one is willing spend for it, just like anything else in life I guess.
Smooth and accurate adjustment are done easily above the table with on slippage and no need to unlock from beneath the table.
By the way, in regard to what a thousandth of an inch is, as I recall,
one grain of talcomb powder is about .0001" in thickness. If that is true, and I may not be remembering right, then it should more than confirm the the fact that such accuracy in wood working is of no value.
Going back my obsession with benchrest shooting, there was a rule that if a shooter thinks that a target measurement is wrong, he or she could challenge the measurement, it costs a dollar to do so, or so was the rule when I was shooting 40 years ago. If the second measurement was within .020" of the original measurement the intial measurement stood. Many matches were won and/or lost by less than .020" by the way.
Last edited by Jerry Bowen; 08-17-2017 at 09:42 PM.