Last 12mm , half inch of the 45deg cut is a high risk to break the tile on most bench saws loosing the corner
Using a straight edge and clamps . a hand held wet saw like a circular saw , can set at part depth and put a scoring cut first , can even plunge a little deeper towards end of cut , then cut again at full depth to avoid breakout if need good cuts
Just had a look at the sealey machine , tbh, get better results with a 4 inch grinder and dry cut stone blade the fast cut type , assuming the 45 cuts are going the perimeter or covered corners thats how i would cut them .
Only need a wetsaw for cuts that are seen