I believe what you are seeing is the difference is toe-out of the slider versus the rip fence. ?When properly aligned the slider angles away from the saw blade as it moves forward, whereas the rip fence angles away to the right of the saw blade. ?This is to ensure that the back of the saw blade does not re-cut the material going past and create chip-out or kick-back. Therefor, if you cut material square using the crosscut fence and sliding table, then push the newly created end of the material against the rip fence, it will have a gap just as you describe.
You can set up your rip fence such then when the fence extrusion is retracted back and away from the saw blade, the toe-out is defeated yielding a rip fence that is truly parallel to the saw blade, or aligned with the end of the just- cut material from the crosscut fence. ?I have fully described how to do this in a document on. ?The link to that document is as follows:
http://tinyurl.com/RipFenceBumpStop
David Best
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On Feb 13, 2024, at 1:19?PM, James Heathcock via groups.io <james.heathcock@...> wrote:
I have been attempting to use my rip fence on the right hand side of the blade as a bump stop for multiple narrow rip cuts in 8ft mdf sheets, rip fence pulled backwards to avoid any binding. With my stock tight against the long cross cut fence on the slider there is a small but visable gap at the front of the rip fence between stock and fence. In other words the stock will not sit square on both fences. Using the rip fence on its own, perfectly parallel results, using the crosscut fence alone, perfectly square results. Even, as a test, with squared stock, the gap is still there. This redeners the rip fence unusable as a bump stop as it cannot be trusted as an accurate refence. I simply cannot get my head around where adjustments need to made, or is this simply a procedure that cannot be done on a felder sliding table saw? I overcame the problem by using the rip fence as a bump stop anyway, knowing the result would be 'close' but not parralel or accurate then ran each piece again, using just the rip fence, to true them up to desired dimension. It seems a long process. Surely, there is a better way of cutting multiple 200mm strips, accurately from 8ft sheets in one cut using the slider side of the machine? I hope I have explained my issue sufficiently so someone could possibly help me. Thank you.?
David P. Best