HB pencil (or softer) will do the job. The lead in a pencil is made of graphite.
SOURCE: SME12A Turntable with SME Series V tonearm/Hana Umami Red, or Audio Technica AT-OC9XSH, PS Audio Stellar Phonostage, Shanling CD 80MkII, OPPO UDP-205 BluRay, SkyQ.
AMPLIFIER: Bryston BR-20 Pre/DAC/Streamer & Bryston 4B3 Power Amplifier
SPEAKERS: Spendor D7 on Iso-Acoustics Gaia Neo III’s
HEADPHONES: OPPO PM-1 with Atlas Zeno cable, B&W Pi8.
CABLES: Analogue: Speaker: Atlas Mavros Grun. Interconnect - Atlas Mavros XLR x3.
Digital:Audioquest Carbon Ethernet x 4, Audioquest Carbon digital x2, English Electric 8 Switch, Chord Optichord, Atlas Optical.
Mains: PS Audio Perfectwave AC-05 x 7, Isol-8 Powerline Extreme with Quantum Science yellow fuse on input cable, Sounds Fantastic 6way Mains Blocks.
ACCESSORIES: Keith Monks Prodigy+ RCM
STORAGE: Synology DS216J NAS with 2 x 3Tb WD Red hard-drives. Samsung 500Gb SSD.
TV LG55B7 OLED