I installed this seven months ago on my new Harvey saw. The saw was already dialed in with blade, miter slots and the BigEye fence all parallel. The saw tabletop was checked for flatness.

In order to align the sliding table so it would slide parallel to the blade I needed shims (0.004” to 0.0015” ; 0.15-.04 mm). That is, the left side of the saw table or the sliding table was manufactured with some skew that needed correction.

In order to keep the fence parallel to the table surface I needed another set of shims (0.002”, 0.05 mm).

This two-plane adjustment required a LOT of trial and error work. Fortunately Amazon had a set of precision stainless steel shims at a very reasonable price. Tape is not hard and stable enough and of course does not come in precise thicknesses.

I usually remove the fence when not in use since it often gets in the way in my limited space. So I need to install and calibrate to 90 degrees whenever I use it. The 0 degree stop mechanism on the gauge does not allow sufficient accuracy or precision, especially not for long panel cuts. I calibrate the fence to right angles with my Big Eye fence (which is reliably calibrated parallel to the blade). I have a steel Kinex DIN 875/1 19 3/4” (500 mm) square ($55 from Taylor Tools) that I use for this. Long side pressed against the fence and when the fence is aligned I can hear and feel a solid thunk when the heavy 13” (330 mm) short side slides against the Big-Eye. (If not aligned perfectly, just one corner of the short side hits the fence and does not thunk). Then tighten the fence handle and the lock screws (CCW). This only takes about a minute now and it’s worth checking before any cut since the fence can go out of square if accidentally bumped hard enough.

I know this is not a cast iron or industrial sliding table, so I don’t mind the setup and regular calibration so long as it cuts well, and it does since there is no slop in the sliding mechanism. I can cut panels with confidence and don’t need a sled.

The flip stops had too much flex in them out of the box. The actual measurement would change even with the wood pressed lightly against the stop. It was easy to figure out how to tighten the hinge to make the stop more usable, but the hinge point is still too narrow for a precision stop. I understand why the flip stop was not manufactured wider at the hinge, but I think Harvey should reconsider that economic decision. The scale is hard for my old eyes to read accurately. I would prefer a window and hairline setup with a scale that is easier to read - like the one on the BigEye. On the plus side, the fine adjustment on the stops is great when trying to creep up on a cut. In fact, the best way I know of to do that.

After a few months of use the sliding mechanism began to screech. I keep my machines clean, so it obviously needed lubrication somewhere, but I didn’t want to spray something all over. I eventually found the right spots to apply paste wax. (Ask Harvey where. They should put this info in the manual).

Installed it on my Sawstop PCS. Kept the extension top on the table and works great for square cuts. Only issue with keeping the extension is the angle for the miter fence doesn’t really work, only really good for 90 degree cuts. The fence is way too far away from the blade to really use for angle cuts. May eventually take the extension out and move the slide closer to the blade like the instructions advise. Did use some 0.05” metal shims on the table to get perfectly aligned. I installed it by myself and was a bit challenging getting it aligned, having some help is a good idea. It is very well made and impressed with the quality. Overall was easy to setup and align. Haven’t cut large panels yet but looking forward to using it for my next project.

Spectacular

This was the perfect “wingman” for my SawStop!

I had no problem assembling and installing this myself without help. Make sure you get a couple shim stocks (I used .018 x 4 x 9 from Ace Hardware) so that the slide is above your table saw. It still took me several times to get it exact, so make it easy on yourself and get it right.

I have used this everyday and it has made shop life easier. My large panels are effortlessly crosscut with precision! No blade burn or accidental movement throughout the cut.

It is well designed and has an aesthetically appeal. I absolutely love my new Compass and the AH-3T hold down is larger than I expected and that’s a good thing. Harvey did it right!

My only complaint is that the manual doesn’t have any instructions on how to calibrate the flip stops accuracy with the scales. However, I came up with a fail safe way to calibrate it and the repeatability and precision has been maintained ever since.

I made this video about the full experience. Unboxing, installation and use. https://youtu.be/E20T71GCZzg

I highly recommend this attachment.

Great product. Easy set up

Solid build.
Easy installation.
Only issue was missing nuts for M10 bolts. Not to worry, had some in my shop. Used a 5/8 inch aluminum bar stock shim to avoid having to cut any tubes on my SawStop ICS. Love it. Might be good to include the locking knob from the MG-36 pro miter gauge to secure at dead zero but that is style points.

What an awesome addition to my SawStop. Bolted right into place and setup was easy to follow. I use this daily for cross cuts and miters.