Here are some of the fences on X31s
This first one is the type that came on my '99 X-31 - rip and joiner fence back to back, with a Long Bar mounting - which gets in the way when ripping shorter stuff. The "sticking way out in front of the table saw" does give you more fence IN FRONT OF THE SAW BLADE - which is a good thing - the part well registered against the fence BEFORE it gets to the front saw teeth.
This fence system has three shortcomings
1. The combined Rip and Jointer Fence is moderately heavy and though Robland provided a lifting handle on the jointer's angling "thing" - it's back a ways - meaning you have to lean over the machine to get use it to swing the fences up, pivoting off the support bar end - to get the fences off the machine. NOT GOOD if you already have a bad back or don't want to have a bad back.
2. When you're ripping you've either
have to wedge yourself between the sliding table support rail and the protruding rip fence support bar to get close to the end of the saw/ shaper table's end,
lean over the fence support bar
stand to the side of the unit on the sliding table side
in order to feed the stock to the saw blade
3. In order to use the planer you must swing the jointer's infeed and outfeed tables out of the way so the dust collector shroud can be flipped for Planing Mode. The left end of the fence support bar then is sticking up in the air which makes getting around to the back of the machine to retirieve a planed part a PITA, especially if you don't have a lot of room to the right of the machine - which I personally don't have.
Thankfully, Carl, formerly of Laguna Tools and MiniMax, and Laguna Tools again, gave me his old fence. That let me have one for just the rip fence and another for just the joiner fence. Both together is DAMN heavy. Splitting them up still leaves me with two not quite as heavy fences. Of course that leaves me with one fence I have to have a home for when not on the X31
This next one was/is referred to as the Knapp fence - the one shown here is the jointer fence. The rip fence looks similar and mounts on a rectangular bar attached to the end of the jointer's outfeed table and another mounted to the infeed side of the saw / shaper table. You can see the jointer outfeed table mounting bar in the photos below. I don't recall if the rip fence allows for tilting as the jointer fence does.
Here's a Beismeyer installed on an X-31. It has the same shortcomings described earlier
Here's the same fence set up opened for planing - and clearly shows one of the shortcomings of this arrangement
Here's another more familiar fence system familiar to U.S. table saw owners, adapted to an X-31. Unlike the Beismeyer fences set up above, this one has two mounting bars - like the OLD Robland fence system did. Note the older joiner fence arrangement,
For the DIYers - here's one - the Koblosh Fence which uses a sliding door's overhead track. Has the same problem as all the fences that attach to a single mounting bar on the end of the jointer's outfeed table.
Has the same problem with "opening" the jointer tables for planing.