Even if rabbiting or chamfering the rear edges of all three table sections where they might meet the fence in any of the radial saw's possible fence positions, that still won't stop the problem of dust and chip buildup filling the valley created by the chamfer or rabbit. It will still need to be cleared by brush or compressed air, and there is still the risk of a sliver or chip escaping notice prior to attempting the next cut.
The interesting aspect of the reader contribution to Wood magazine in the washer spacer idea and article linked upthread is that the dust and chips can drop out, all the way through the table, into the space beneath. If that space is restricted to the blade travel area, and combined with an under table kerf vacuum as described by a video link that @woodnthings
posted back in 2009, that might be pretty cool. I think I am going to try and combined the two ideas, fence space, and kerf vacuum, as I rebuild my RAS.
...Part of the "evil machine" reputation comes from "improvements" made to it.
I don't know what "improvements" you are referring too? Can you be more specific? Improvements made by saw's owners, or the factory?
As I said it is your choice to do what ever you wish to your tools, not going to get into this any further, end of conversation with me.
This comes across as mean spirited. Hopefully that was not your intent. Why so abruptly end the very conversation that you yourself began by alleging that "part of the evil machine reputation comes from 'improvements' made to it". The use of quotes around the word "improvements" clearly implies that whatever changes you are thinking of you would not consider to be improvements, so it is very reasonable to want to know what specific changes you are referring to that you would consider not to be improvements, and if these changes are from the evolution of how radial arm saws were manufactured over the years, or if the changes are modifications made by users.
In fact, I would like to know as I reassemble my radial saw, and must choose to either reassemble it as originally built, or reassemble it with the "improvements" that the saw manufacturer sent several years ago, that were more consistent with how they manufactured radial saws 30 years after mine was made. Also, the reconsideration of dust collection techniques, with the goal of "improvement" in that endeavor, makes me naturally wonder what improvements saw owners make that might not be improvements.
The purpose and intent of a discussion forum is to discuss... not to drop cryptic zingers and then slink away. How does that help anyone? "Wise men speak because they have something to say." You spoke, so why not finish your sentence?