ok i hope you use the same machine through the sewing part, don't ever switch machines as all are different. i use my janome 1/4 inch foot and i have no problem .i always use the same ruler for the project also to measure out my blocks/strips or what ever i am needing to cut out. same size needle in machine,stitch lenghth and width,all play in the sewing of the blocks squaring the blocks them up again using same tools as you started with.using a pin to match up points, sewing up one side and down other side to not get that bowed effect on quilts make it not match up.
oh also same cutting tools be it a sharp rotory cutter new blade. thread size stitches per inch . weze