Fence For MFT - Where to put cut line (2/3s of table or 3/4 or somewhere else)?

[personalt]

I am building a custom MFT table with major purpose using festool tracksaw to cross cut plywood for cabinets.  I want to figure out where to end fence (cut line).  I would like to set it up where  I get to use the flip stop as much as possible.  To be more clear, at this point I am trying to decide to long of fence to buy for right and left.  Every video I look at they load up the fence really heavy to the left like the picture below - is this because they are rough cutting everything thing first without fence and making the final cut as a second cut?  If not it seems like you would end up with a ton of plywood way off the right of table? 

In my build  - the table would be about 71" or 1824 mm wide and I cut a lot of cabinet sized pieces 21-30" depending on how thin gs are oritentiated.  If I put it more to the left then these examples, I feel like there is some math to guide this decision but I cant figure out that math  ???.  First thought was 'something like 24" inches to the right of the cut could make sense.  24 on right leaves 46 on the left.  But that really means  if I want to cut 30" using flip stop (out of a full sheet) I have 30 cut piece on left, 24" on right and 42" off of table.  That would seem to be way too much off the table though when I make the cut - though maybe with clamps I would be okay? 

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[Coen]

Large offcuts can be supported with a separate post or even clamped.

It all really depends on what you cut and how big each piece is.

 

[jeffinsgf]

This is probably not the answer you're looking for, but I have a relatively narrow right side and a MFT-800 that I can place on the right wherever I need it to catch a large offcut. For a custom table, you could do something similar, if you might have need for a small, portable worktable (foldable or not).

 

[Michael Kellough]

Option one, make a very long table and put the rail in the middle.

Option two, make a table just a little longer than the longest piece you will need. That is, with the flip-stop all the way to the left on the fence, and just a half foot of support to the right of the rail. Then add separate support for longer stock.

But positioning stock that is much longer than what fits against the fence can be problematic so…

Option three, go with option two but put roller balls (a lot of them) on top of the right side support table so it is easy to position the stock.

Once upon a time I had to make cabinets on-site out of cherry veneered mdf using a lightweight table saw. Just laying a full sheet on the saw would tip the saw over so I made a outfeed frame of 2x4’s (straightened) that surrounded the saw on all sides and put roller balls on the tops of the 2x4’s. That made moving the big heavy panels along the short fence pretty easy.