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This artcile is to discuss about the disassembly and restoration of a regular line Omas 361, the piston which with a pin, should also work for the old model of Omas Paragon from the 1950s. I got a NOS Omas 361 and a vintage Omas Paragon from the 1950's recently, the piston filling system with a pin really make them special, and I really enjoyed the restoration work. Special thanks to Tom Westerich from http://penboard.de and Richard Binder from http://richardspens.com, enjoy! Pic 1. Green Box of Omas 361 Pic 2. Open Box of Omas 361 with Papers Pic 3. Detail of Omas 361 Papers - Front Pic 4. Detail of Omas 361 Papers - Back Pic 5. Nib Detail - 1 Pic 6. Nib Detail - 2 Pic 7. Nib Detail - 3 Pic 8. Nib Detail - 4 Pic 9. Cap Detail - 1 Pic 10. Cap Detail - 2 Pic 11. Cap Detail - 3 Pic 12. Barrel Detail Pic 13. Fully DisassemblyFrom left to right: a. Cap b. Barrel c. Piston Cork Unit d. Blind Cap e. Pin f. Feed g. Nib h. Hood To disassemble the nib and feed 1. heat the Part H(hood), then pull the Part H(hood) out of Part B(barrel) 2. you will see Part F(feed) and Part G(nib) in Part B(barrel) 3. heat the Part B(barrel) slightly, then carefully pull the Part F(feed) and Part G(nib) out To disassemble the piston 1. pull the Part E(pin) out in picture 14 2. uncrew the Part D(blind cap) out 3. pull the Part C(piston cork unit) out from the Part B(barrel) To restore 1. fully disassemble the pen following the steps above 2. apply scilion to the cork(replace the wooden cork if your pen comes with a wooden one) 3. put the Part C(piston cork unit) into the Part B(barrel) and mark the position of the pin hole (IMPORTANT!) 4. push the Part C(piston cork unit) all the way down of Part B(barrel) 5. screw the Part D(blind cap) on the Part B(barrel), make sure the pin hole on Part D(blind cap) match the position of the pin hole of Part C(piston cork unit) 6. push the Part C(piston cork unit) all the way to the top and make sure the pin hole of Part C(piston cork unit) and Part D(blind cap) are aligned 7. push the Part E(pin) through the pin hole of Part C(piston cork unit) and Part D(blind cap) 8. install the Part F(feed) and Part G(nib) to Part B(barrel) 9. install the Part H(hood) Pic 14. Pin