Hi Steve

My 1987 UC115 has a similar problem to your saw, except I have to pack up the other side of the table!

I've always thought "Ah .. I just need to face off the top of the lower guide assembly in the lathe, I'll get around to it one day"?

In response to your question, today was that day.?

I put the?whole guide assembly into the 3jaw chuck of the lathe, holding by its sliding arm, and all of a sudden got a rude shock.? The top of the guide assembly WAS square to the arm of the guide assembly and the lathe tool was?taking it evenly off both sides of the blade (a very slight (<0.3mm) tip down at the back). but certainly?not the 1-2deg tip down on the LHS that my table shows.??

I've always known the?guide assemblies on my machine don't move parallel to the back of the blade (you can see that when you raise and lower them, that the gap to the back of the blade changes) but since I have the lower one locked in place permanently I thought the bottom one didn't matter.? Unfortunately it does!

It's the guide slot in the casting that is not machined parallel to the?blade run, or not square to the gearbox output shaft (or both).

Oh Darn, That means the table will still not be squareto the blade on my new milled-square guide assemblies (see pic). How do I compensate for that??

An 'Oh Shit' moment is being had!.- jv

P.S. It's?now a couple hours later.

I had the idea of using a set screw through the back of the casting into the top or bottom of the guide arm slot, to force the blade to run parallel to the blade back.? Might that cure the table slant too??

IT DOES! (see pic)

I had to move the bottom?of the guide arm out to get my table square?

Since yours is the opposite way to mine, Steve, if this fix really does work you should need to?pack out the top of the arm? Try it with a bit of shim between the arm and the top edge of the casting to see that it works first.? Then use, say, 2 M5 setscrews, one either side, or, if the bottom of your guide arm is square, then maybe one M8 in the middle of the top of the guide slot.

Let us know if it works - jv

On Tue, Sep 22, 2020 at 11:55 AM steve nicholson <steve@...> wrote:

The recent messages on vertical cutting tables reminded me I need to fix
mine to be able to use it properly. Hopefully the attached photos come
through with this message.

The top of the blade guide holder that the table screws to is not square
to the blade, therefore the table isn't square and is frustrating to
use. I have to muck round packing one side to get it square and can't be
bothered using it.

My main question: is this a manufacturing fault or is there something
out of adjustment that I'm missing.

I know my options to solve this, if it is a manufacturing fault, are:
- making a table with the correct packer welded in place.
- making a table frame that locks into the saw work clamp.

I just wanted to check before I attack the project that the problem has
other solutions I hadn't considered.

Thanks and have a wonderful day.
Steve