Table saw blade moves out of alignment

The trunnion mounting bosses on the bottom of the table are probably not co-plane with each other. The low one/s will need to be shimmed between the boss and the trunnion.

Another common problem is that the trunnion bars are not parallel with each other.

Edit: Also, you should make the alignment adjustments with the belt on.

-- Joe

Hi Woodhed, Your saw is a hybrid. Check if the brackets (that hold the trunnions) are flush with the bottom of the saw top. You might have caught something between them when you adjusted it. Never read John White and I can’t imagine how using a Master Plate wouldn’t introduce all kinds of inaccuracies over just putting a spot on your blade and rotating it. That said, Matthias Wandel at WoodGears.ca owns a Delta Hybrid and has posted on it. I feel TableSawAlignment.com is well worth the registering hassle. I also recommend Ed Bennett's TS Aligner Jr but it might be very frustrating to try and get one. Good luck. -Jack

Woodhed – I didn’t realize your’s was a hybrid, so what I said may not be true. In any case what Jack said about TableSawAlignment.com is spot on.

Probably you can’t buy any of Bennett’s products, but his methodology is correct.

-- Joe

I used a Master Plate instead of a piece of plywood.

Woodhed, I’m puzzled. Having your boards be off like that is probably due to your miter gauge and blade angle not being at 90 degrees. Like Joe said, having the blade alignment change when the blade height changes is a (non) coplanar issue. Blade alignment is on two planes, vertically parallel to the miter slot and horizontally with the surface of the top. Aligning the blade to the top is complicated by the method most table saws use to adjust blade height. On contractor saws (and I think your hybrid too) the assembly that holds the blade (and hangs/rides on the trunnions) pivots on an arc to change blade height. The axis of that pivot (basically the whole assembly) needs to be perpendicular to the miter slot and parallel to the top surface. The front and rear trunnions also have to be level/parallel with the table surface too. If the front and rear trunnions (the assembly) are not on the same plane(level), tilting the blade (to say a 45 degrees) will take it out of alignment with the miter slot. I thought you might have put a splinter of wood under your trunnion bracket using a block of wood to adjust it. I found http://www.in-lineindustries.com/saw_pals.html to be very helpful aligning my saws. They might work on your hybrid.

I don’t understand why any one would recommend using a Master (magic) Plate. Using the plywood might be just as accurate and using your blade would be more accurate and cheaper. Good luck. -Jack