Solving problems with mis-patterning Brother punchcard machines: problems with sinker plate alignment

… in progress. Last updated: March 2026

The advice below applies to Defendi, KnitKing, and Brother knitting machines accepting 24-stitch cards, bulky and standard-gauge.

I came across this problem right after I spent hours cleaning the insights of the machine, aligning the timing belt, all pins and plates, and removing old grease. I was very confident that the insides and alignment of the machine was in excellent shape. In fact, when I was passing the carriage back and forth, fast and slowly, while card #1 was inserted, every other needle was selected in each pass like a clock.

However, when I attached the sinker plate, some of the needles started being selected incorrectly (watch a video of what I mean). I was very puzzled because this was the first time I ever experienced something like this.

One of the most probable causes is a sinker plate alignment (on the carriage itself). So watch closely how the sinker plate goes onto the carriage. If both sides slide in easily without any (even minor) drop-in. The misalignment can be due to a bent versus just damaged sinker plate. I noticed that if I loosen up the sinker plate, it does NOT mispattern. So, after lots of staring and measuring, I noticed that the carriage plate underneath the thumb nuts was a bit bent on one side. I straightened it and the sinker plate was attaching more evenly and mispatterning disappeaed.

On another occasion, I noticed that the left and right sections of the sinker plate assembly were not symmetrical. One was slightly above the other. There was a small bend in one. I straightened it and adjusted the screws to make both parts symmetrical relative to each other.

I will be collecting pictures of sinker plate misalignments (but it would still be hard to cover all angles). So in the meantime, just stare at your sinker plate and watch for any asymmetries, weird angles, loose sections, etc. It helps if you have another (good/non-faulty one) sinker plate for comparison.

Good luck, and let me know how it went!