Ebuwan said:I've had issues like the original poster when using MFT's for square cuts, 99.99% for cabinet panels.
I've found following a stringent process helped to get great results; but I HAVE to do it the same very time, lol.
I have the slop stop from toolnut (I don't know how you can use it without this).
I square it up with the Woodpecker MFT setup square; I do not rely on dog holes at all; had a huge time/material wasting experience when I tried that when I first got it.
The biggest thing I found with the process:
I rip the 4x8 sheets down to width with parallel guides, so I end up with a bunch of correct width pieces that are 8ft long.
I have 2 or 3 MFT's linked together, and I found if i would take the 8ft piece, square an end of it, then slide it along the fence to the stop for the lenght needed, it would always come out a little wonky.
I found that if i "rough" cross cut to length, creating much shorter pieces to square, it came out perfect.
I think for me, what was happening, the long heavy piece was acting almost like a pry bar against the fence, causing slight deflection.
I've been on the fence about the dashboard gear for the MFT's, i'm wondering if it would help me overcome this issue, cuz when cutting a lot of pieces, it's a bunch of time wasted with the rough length breakdown.
I'd say your ripped pieces have bowed/sprung after cutting - very common with sheet goods, as the tension is released once cut. Only way to avoid this is to rip the sheet over size, straight line one edge, then rip to width.