Quite a few years ago I made a fence positioning jig from a design by Nick Engler. It was nice and worked fine, but when I built a new router table I also built a split fence so I would have the option of moving the outfeed side of the fence outwards to fully support the workpiece through the entire cut when jointing.
I just occurred to me that I could use the positioning jig together with my split fence as shown below. One full turn of the handle on the positioner and the fence moves 1mm or slightly over 1/32”. The postitioner isn’t attached to my split fence, so I just shove it against the positioner fence when adjusting backwards. here is a photo of it. Just click on the image to zoom in, set-up.
Here is a couple of small pieces I jointed with it. The smaller one on top is about 12” long.
The next pic shows a piece being jointed. First I run the workpiece through to about 10” onto the outfeed fence, then I stop and clamp the piece firmly against the infeed fence. Notice the little gap between the workpiece and the outfeed fence.
Now I adjust the outfeed fence forward until it is firmly against the already jointed part of the workpiece. Now I am set to joint as many pieces as I want with full support of the cut on both infeed and outfeed sides of the fence.
-- Mike, an American living in Norway.