Steel Guitar Builder

Has anyone had any experience using a Gluck style changer. I'm getting the urge to build again and I came across the changer design. I built my first changer with standard two piece riveted arm without bearing. Can go either way, the design looks really simple and I already have some delrin (impregnated acetal). Just wondering what the pros and cons are. I've attached several pics of my first build. Neck, endplates were rough castings, the rest I did myself. Thanks in advance ...Frank