Branko,
I have to really say thank you to you guys because your 'problems' are mine too. Since your first post about unplunging the saw,
I have been looking at my saw and the rails and working on figuring out how to understand the real cause and find a solution
that makes sense. Believe me, that has been going on for a while but knowing that someone else was experiencing the same thing
along with the arrival of my PBB seems to have made a difference.
I noticed that your friend Nils did not make any new friends over in the FOG and did not get any answers to his questions either.
I do not have the solution to the 2" rip on 5m boards that are less than the width of the rails
but I am going to figure that one out.
Anyway, here are some things that I learned and have done which you might find interesting.
1. another reason for the not perpendicular edges on rips.
Aside from the Fest rails being generally weak, the surface is also not completely flat. The green plastic strip that is supposed to help the saw slide, also creates a
pivot point around which the saw can rotate along the length axis of the rail. So, if you do not apply constant and consistent pressure to the left, the saw can tip to
the right. Here are a couple of pictures to demonstrate what that means.
first picture is the saw sitting untouched on the rail.
then with some slight pressure to the right
So, there was one nice guy in the FOG who suggested to Nils that technique might be a solution and he was correct. Just as it takes very little downward force to
plunge the saw, it takes very little sideways pressure to tilt it.
2. another way to avoid that.
Aside from practicing your technique, now that you have (or soon will have a PBB), you can actually eliminate the possibility of this happening without having
to sell your existing rails.
Effectively, I turned the Fest rail into a giant sub base for the TS75 and the whole thing slides on the EZ rails like silk. And cuts like magic.
First to get an idea of how this works, here is my PBB this is not set up for ripping. i do not have the EZ rails long enough for that so it is set up as a cross
cut/cut off tool.
Someone asked the other day about cutting the SME top kit when cutting a piece of wood. I do not want to do that so I cut on the end of the bench.
I also took the rip fence apart and turned it into a giant clamp. It clamps down to the bench and there are smart clamp/jorgensen hand screw type
threaded rods which allow for variable amounts of pressure to keep the work piece from moving or allow it to move in a narrow corridor. (this
whole set up is also a router table).
Now I can use the Fest anti kick back plunge stop to actually lock the saw down to the fest rail since that rail is now just a sub base.
So, this set up takes up about 10 more cm of cutting depth than the EZ sub base. Which is ok for me. (the wood is 5/8 and I am sure you could do this with 1/2")
Watch the whole thing in a short video on You Tube.
https://www.youtube.com/watch?v=wUhcolHMDM4 Thanks for the idea of closing up that big hole in the side of the saw for better DC too!. You see that red piece screwed to the side of my 'sub base'?
this thing
That thing is my anti chip protection. UHMW screwed on to that piece of wood that supports the rail with nylon screws. It fits right into the edge groove
of the EZ rails (and there is actually another piece on the other side which was left from my first attempt at this) so the whole sub base is really captive
to the EZ rail it will not come off vertically or tilt to the left or right. (also works great for lining up a line to the inside or outside of the blade)
I also noticed in your picture of the tied up saw that you have a WoodRat. One of the other things that I have been trying to figure out how to deal with is cutting out
the ends of boards for tenons. Here is an idea for making that fence system a little more useful.
1. Use your smart clamp system as brackets to hand the thing on the end of your PBB
2. hang the WR on the PBB
3. build your own short guide rail out of wood (this is maple and it looks like a piece of furniture). and a support system to extend it laterally
4. extended mode...that's about an eight inch wide piece of cherry clamped to the WR that i can now clip the corner out of without turning the
whole piece into a pile of dust with a router bit.
ok, enough for one day.
here is one final picture of the PBB as a router table with stops that I find useful. just for reference, those hand screws
(aka stops) are clamped to the same EZ rail that is used for the cross cutting. the maple short guide rail on the WoodRat
is there in the foreground and the EZ rail at the top of the picture (back of the router is supported by the Brooklyn bridge).
last one....the Brooklyn bridge
as you can see, some parts were borrowed from another system that does not work as well.