The platters don’t come "coated with a black substance ". They were aluminum first with aluminum bearing model , then delrin platter with an inverted bronze bearing. Delrin is like acrylic but closer to the composition of vinyl making it a better cunduit to let vibration travel through it and not reflect back to the cartridge. The best thing I found to safely clean the grooves of the platter of a Gyro is q tips dipped in endust for electronics. Its all natural and leaves no residue of its own and easily removes the residue the belt leaves from use. A micro fibre rag is good for the final wiping folded on edge into the groove to clean the groove . There is no scrubbing involved.
Make sure its "endust for electronics" in a blue spray bottle and not endust the furniture cleaner which has waxy oil residue to polish. The endust electronic cleaner is all natural based and works well , for this and for cleaning faceplates safely. Squirting it on the rag or q tip is more effective for obvious reasons.
Make sure its "endust for electronics" in a blue spray bottle and not endust the furniture cleaner which has waxy oil residue to polish. The endust electronic cleaner is all natural based and works well , for this and for cleaning faceplates safely. Squirting it on the rag or q tip is more effective for obvious reasons.