Remix of https://www.thingiverse.com/thing:11633, as the thinnest strings on the harp broke off after I printed it. I made the strings thicker, and a little less tapered. I used tinkercad, see https://www.tinkercad.com/things/dIHfiGfuyVX-guinness-harp-modified

Imported https://www.thingiverse.com/thing:11633 into tinkercad, joined with longer rectangles a little larger than the strings, see https://www.tinkercad.com/things/dIHfiGfuyVX-guinness-harp-modified