![how to clean these old rotring ? , they are clogged on the inside and i have no idea how to clean them (one has fungus inside or smt) . : r/rOtring how to clean these old rotring ? , they are clogged on the inside and i have no idea how to clean them (one has fungus inside or smt) . : r/rOtring](https://preview.redd.it/how-to-clean-these-old-rotring-they-are-clogged-on-the-v0-tf35gsqnqhx91.jpg?width=640&crop=smart&auto=webp&s=7e0d0d9e685b3bbf5128e0a7375935009e68d32f)
how to clean these old rotring ? , they are clogged on the inside and i have no idea how to clean them (one has fungus inside or smt) . : r/rOtring
![1pc rOtring Isograph Needle Pen 0.1-0.8mm Repeated replacement nib Addable Ink hook line pen Hand-painted/ Drawing Pen 1pc rOtring Isograph Needle Pen 0.1-0.8mm Repeated replacement nib Addable Ink hook line pen Hand-painted/ Drawing Pen](https://ae01.alicdn.com/kf/S72bc92d01ae5469493fb2520a10e1526N/1pc-rOtring-Isograph-Needle-Pen-0-1-0-8mm-Repeated-replacement-nib-Addable-Ink-hook-line.jpg)
1pc rOtring Isograph Needle Pen 0.1-0.8mm Repeated replacement nib Addable Ink hook line pen Hand-painted/ Drawing Pen
![rOtring Isograph Technical Drawing Pen, High Precision Technical Pen with A Refillable Ink Reservoir, 13 Different Line Widths - AliExpress rOtring Isograph Technical Drawing Pen, High Precision Technical Pen with A Refillable Ink Reservoir, 13 Different Line Widths - AliExpress](https://ae01.alicdn.com/kf/H82a2524aa3c2480c8757c446ce5c900dA.jpg_640x640q90.jpg?width=750&height=541&hash=1291)
rOtring Isograph Technical Drawing Pen, High Precision Technical Pen with A Refillable Ink Reservoir, 13 Different Line Widths - AliExpress
![1pc rOtring Isograph Needle Pen 0.1-0.8mm Repeated replacement nib Addable Ink hook line pen Hand-painted/ Drawing Pen 1pc rOtring Isograph Needle Pen 0.1-0.8mm Repeated replacement nib Addable Ink hook line pen Hand-painted/ Drawing Pen](https://ae01.alicdn.com/kf/Saa44289c8f7744a59c685c169d78f8a4d/1pc-rOtring-Isograph-Needle-Pen-0-1-0-8mm-Repeated-replacement-nib-Addable-Ink-hook-line.jpg)
1pc rOtring Isograph Needle Pen 0.1-0.8mm Repeated replacement nib Addable Ink hook line pen Hand-painted/ Drawing Pen
![rOtring pen cleaning unit. Can fit 4 isograph nibs or variant style sections and 4 rapidograph nibs or other variant style nibs. Very usefull and safe for loosening dried up ink : r/rOtring rOtring pen cleaning unit. Can fit 4 isograph nibs or variant style sections and 4 rapidograph nibs or other variant style nibs. Very usefull and safe for loosening dried up ink : r/rOtring](https://i.redd.it/b4k2t8k25mc51.jpg)
rOtring pen cleaning unit. Can fit 4 isograph nibs or variant style sections and 4 rapidograph nibs or other variant style nibs. Very usefull and safe for loosening dried up ink : r/rOtring
![How to clean and wash isograph Rotring. Global Drawing Club | Rotring pens, Staedtler pens, Drawings How to clean and wash isograph Rotring. Global Drawing Club | Rotring pens, Staedtler pens, Drawings](https://i.pinimg.com/564x/8e/00/88/8e00882ef848f1ddf6155fdbcd6e067e.jpg)