Quoted from AUKraut:Nice, built one of these myself a little over a year ago, a real backsaver.
One suggestion: that aluminum angle iron is REAL thick, I used some of this instead covered in felt to minimize chances of cabinet damage:
https://www.homedepot.com/p/Everbilt-1-1-2-in-x-14-Gauge-x-36-in-Zinc-Plated-Slotted-Angle-802407/204225759?MERCH=REC-_-SearchPLPHorizontal1_rr-_-NA-_-204225759-_-N
How bad is the "slippage" when lifting/lowering a pin?