Rabco ST-7 Turntable Stylus mounting jig (And maybe ST-6 & ST-8)

thingiverse

PLEASE NOTE: This was made in Inches, since the measurements given were, so your slicer may see it as really small! Cura does.. If it does, increase the size by 2540% This little tool came with these turntables to help the user mount their cartridge and stylus accurately for the best possible sound. It helps with both the length of the arm, and the height of the needle, which changes the angle that the stylus is sitting at in the record groove. The measurements for this tool were posted quite some time ago, and since I got a 3D printer, I have been itching to remake one, so I finally did. More help was obtained by looking at the owners manual for the turntable. I made several tweaks until I found it practically a dream to use! None of the tweaks changed the critical dimensions for getting the positioning right. Previously I had mounted my cartridge using a DIY method I came up with, which turned out to be very accurate, since, when I put this jig on my tonearm, my stylus was only out by a fraction of an mm. Since then I used it to put a different cartridge on, and it was a pleasant breeze with this tool! The shims are provided for adjusting the stylus height on the arm, as the owners manual explains. (The owners manual is pretty easy to find, I would recommend reading it carefully.) Please be EXTREMELY careful when using this tool, and be very aware of where the fragile tip of your stylus is at all times! You do NOT want it to hit against this tool, as the styli are extremely fragile. I am NOT responsible for any damage, just as Harmon was not responsible when they made the tool for new owners of these unique tables! I really love these turntables, since they use fairly simple geometry tricks to give you a zero tracking error table with zero servo or motor noises, since no sensors or motors are needed to maintain the precision. I LOVE mine, but it's nearly an art form keeping them working properly and maintained!