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The '''F.G.S''' is a single sided mod made by Joey. Its name stands for "Frixion. G2. Signo". This mod was created to optimize the most out of every part used.
The '''F.G.S''' is a single sided mod made by Joey. Its name stands for "Frixion. G2. Signo". This mod was designed to make the most of every part used.
==Construction==
==Construction==


===Parts needed===
===Parts needed===


List from the Taco's post <ref name=Tutorial">https://hackmd.io/r-5MVBUjSESILF7l2mkNDw?view</ref>:
List from the Taco's post <ref name="Tutorial">https://hackmd.io/r-5MVBUjSESILF7l2mkNDw?view</ref>:
* x1 [[Pilot G2]] (Everything)
* x1 [[Pilot G2]] (Everything)
* x1 [[Pilot Frixion Colors]] (Everything except white barrel)
* x1 [[Pilot Frixion Colors]] (Everything except white barrel)
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* Tape
* Tape


===Text tutorial===
===Text tutorial<ref>[https://hackmd.io/r-5MVBUjSESILF7l2mkNDw?view Joey’s F.G.S tutorial], photographs by Joey.</ref>===
====Preparation====
# Prepare two inserts: 9.6 × 2.5 cm for the Signo DX barrel and 3 × 2.7 cm for the front sleeve. Part of the longer insert will be hidden.<br>[[File:FGSTutorial02.jpg|left|thumb|200px]]<br clear=all>
# Cut the "dome" part of the Uni-Ball Signo DX backplug.
# Disassemble the Signo DX, retaining its barrel, tip, grip, backplug and refill parts.<br>[[File:FGSTutorial03.jpg|left|thumb|200px]]<br clear=all>
# Cut the "Screw thread" section from the front of the Uni-Ball Signo DX body.
# Cut the dome off the Signo DX backplug, keeping its tubular section. Cut off and retain the threaded front of the barrel. Use a saw rather than a tool that squeezes the brittle barrel.<br>[[File:FGSTutorial04.jpg|left|thumb|200px]]<br clear=all>
# Sand the front of the Uni-Ball Signo DX barrel (until Pilot G2 barrel is able to fit snugly onto it)
# Cut a 3 cm section from the threaded end of the rear G2 barrel. Sand the Signo DX front until this sleeve fits over it with the short insert underneath.<br>[[File:FGSTutorial05.jpg|left|thumb|200px]]<br clear=all><br>[[File:FGSTutorial06.jpg|left|thumb|200px]]<br clear=all>
# Clear/remove the ink of both Pilot G2 and Uni-Ball Signo DX, then disassemble the inktubes
# Fit the long insert inside the Signo DX barrel, wrap the short insert around its front, and fit the prepared G2 sleeve.<br>[[File:FGSTutorial07.jpg|left|thumb|200px]]<br clear=all><br>[[File:FGSTutorial08.jpg|left|thumb|200px]]<br clear=all>
# Cut the Uni-Ball Signo DX inktube to ~1.7/1.75cm from the back
# Empty and disassemble the Signo DX and G2 refills, retaining their metal nibs and plastic parts.<br>[[File:FGSTutorial09.jpg|left|thumb|200px]]<br clear=all><br>[[File:FGSTutorial10.jpg|left|thumb|200px]]<br clear=all>
# Cut the Pilot G2 inktube to 2.4cm from the back (plug the plastic stopper back in)
# Sand the cut Signo DX threaded front and the raised sections of the G2 front barrel as pictured.<br>[[File:FGSTutorial11.jpg|left|thumb|200px]]<br clear=all>
# Cut the Pilot G2 clicker to 1cm.
# Cut the G2 front barrel to 2.5 cm, measured from its threaded end.<br>[[File:FGSTutorial12.jpg|left|thumb|200px]]<br clear=all>
# Cut the Pilot G2 grip to separate the flat section.
# Cut 1.7–1.75 cm from the rear end of the clear Signo DX refill tube and 2.4 cm from the rear end of the G2 refill tube. Prepare the tubes and nib parts as pictured; keep the G2 tube stopper.<br>[[File:FGSTutorial13.jpg|left|thumb|200px]]<br clear=all>
# Cut the Pilot G2 barrel to 3cm (from the screw thread part)
# Tape the Signo DX refill front part until it fits securely inside the G2 tube. Assemble as pictured, add tape around the G2 tube to fit the prepared G2 front barrel, and screw the Signo DX tip onto its retained threaded section.<br>[[File:FGSTutorial14.jpg|left|thumb|200px]]<br clear=all><br>[[File:FGSTutorial15.jpg|left|thumb|200px]]<br clear=all>
# Cut the front barrel of the Pilot G2 to 2.5cm (from the thread)
# Fit the cut Signo DX backplug over the exposed G2 nib part, with its cut end facing the metal tip. Keep its original orientation for insertion into the barrel.<br>[[File:FGSTutorial16.jpg|left|thumb|200px]]<br clear=all>
# Sand the bump/raised part of the Pilot G2 cut front. And sand the flat part.
# Insert this front assembly into the Signo DX barrel.<br>[[File:FGSTutorial17.jpg|left|thumb|200px]]<br clear=all>
# Sand the bump on the front part of Pilot Frixion Colors.  
# Prepare the smooth G2 grip section, G2 clicker, spring and remaining refill parts, plus the Frixion Colors pen.<br>[[File:FGSTutorial18.jpg|left|thumb|200px]]<br clear=all>
# Attach the plastic piece from the cap on the front part of Pilot Frixion Colors, then cut it (with the tip of the front still in the plastic piece)
# Disassemble the Frixion Colors cap and front assembly. Keep its rubber eraser piece, internal plastic piece and front plug.<br>[[File:FGSTutorial19.jpg|left|thumb|200px]]<br clear=all>
# Cut the front plug of Pilot Frixion Colors to 2.5cm (from the "interior side")
# File the raised edge of the Frixion Colors front plug.<br>[[File:FGSTutorial20.jpg|left|thumb|200px]]<br clear=all>
# Cut the G2 spring in half
# Cut the Frixion Colors front plug to 2.55 cm from the side that originally joined its barrel. Fit the internal plastic piece over the narrow front and cut off the front as pictured.<br>[[File:FGSTutorial21.jpg|left|thumb|200px]]<br clear=all>
# Drill a small hole into the Pilot Frixion Colors plastic piece
# Remove the obstruction from the Frixion Colors cap and insert the remaining G2 refill tube.<br>[[File:FGSTutorial22.jpg|left|thumb|200px]]<br clear=all>
# Plug the leftover Pilot G2 inktube in the Pilot Frixion Colors cap then cut it.
# Trim that tube flush with the cap opening and fit its stopper into it.<br>[[File:FGSTutorial23.jpg|left|thumb|200px]]<br clear=all>
 
# Trim the G2 clicker as shown in the ruler photograph.<br>[[File:FGSTutorial24.jpg|left|thumb|200px]]<br clear=all>
====Assembly====
# Insert the prepared clicker into the cap in the pictured orientation.<br>[[File:FGSTutorial25.jpg|left|thumb|200px]]<br clear=all>
=====Front side=====
# Pierce the Frixion Colors internal plastic piece. Assemble, from left to right in the photograph: G2 metal nib, pierced plastic piece, Frixion Colors plastic nib, then Signo DX metal nib. Use glue if the fit is loose.<br>[[File:FGSTutorial26.jpg|left|thumb|200px]]<br clear=all>
# Put the cut Pilot G2 over the front of the Uni-Ball Signo DX barrel
# Cut the G2 spring in half.<br>[[File:FGSTutorial27.jpg|left|thumb|200px]]<br clear=all>
# Add both insert (First one in the body, second one on the front part)
# Fit one spring half onto the Frixion Colors rubber piece, then twist the other half into the first, as shown by the blue and pink examples.<br>[[File:FGSTutorial28.jpg|left|thumb|200px]]<br clear=all>
# Put the Uni-Ball Signo DX tip on the sanded part of Pilot G2 body.
# Assemble the prepared front-plug section, rubber piece with nested springs, and nib assembly in the pictured order inside the cap. Fit the smooth G2 grip section over the cap.<br>[[File:FGSTutorial29.jpg|left|thumb|200px]]<br clear=all><br>[[File:FGSTutorial30.jpg|left|thumb|200px]]<br clear=all>
# Wrap some tape around the Uni-Ball Signo DX inktube (until the Pilot G2 inktube fits on it) then assemble
# Attach the cap to the barrel. Fit the ribbed G2 grip section and Signo DX grip over the front, arranging the decorative grips to taste.<br>[[File:FGSTutorial31.jpg|left|thumb|200px]]<br clear=all>
# Remove the Uni-Ball Signo DX tip, then wrap some tape around the Pilot G2 inktube. Put the tip back in.
# Check the completed assembly.<br>[[File:FGSTutorial01.jpg|left|thumb|200px]]<br clear=all>
# On the opposite side of the tip, put the cut Uni-Ball Signo DX backplug on the visible Pilot G2 nib.
# Put the Uni-Ball Signo DX backplug into the back of the Uni-Ball Signo DX body.
# Cover with the Pilot G2 non-flat part then the whole Uni-Ball Signo DX grip.
=====Cap side=====
# Put the Pilot G2 inktube cover in the back of the Pilot Frixion Colors cap.
# Put the Pilot G2 clicker inside the Pilot Frixion Colors cap. It should be assembled snugly.
# Put the Pilot G2 metal nib in the Pilot Frixion Colors plastic piece.
# Into the hold of the Pilot Frixion Colors plastic piece put the Pilot Frixion Colors plastic nib. Then put the Uni-Ball Signo DX into it.
# Place one half of the Pilot Frixion Colors spring on the rubber piece from the cap, then twist the other half in the first half
# Assemble like such: Cut front plug of Pilot Frixion Colors < Rubber piece with spring < Metal nib package. Put all of it into the Pilot Frixion Colors cap.
# Add the flat part of Pilot G2 grip on the cap
# Put the cap on the body.


==References==
==References==
<references />


[[Category:Pen Mods]]
[[Category:Pen Mods]]

Latest revision as of 15:37, 3 October 2026

The F.G.S is a single sided mod made by Joey. Its name stands for "Frixion. G2. Signo". This mod was designed to make the most of every part used.

Construction

Parts needed

List from the Taco's post [1]:

Additional Items

  • 2 inserts (9.6cm x 2.5cm and 3cm x 2.7cm)
  • Tape

Text tutorial[2]

  1. Prepare two inserts: 9.6 × 2.5 cm for the Signo DX barrel and 3 × 2.7 cm for the front sleeve. Part of the longer insert will be hidden.

  2. Disassemble the Signo DX, retaining its barrel, tip, grip, backplug and refill parts.

  3. Cut the dome off the Signo DX backplug, keeping its tubular section. Cut off and retain the threaded front of the barrel. Use a saw rather than a tool that squeezes the brittle barrel.

  4. Cut a 3 cm section from the threaded end of the rear G2 barrel. Sand the Signo DX front until this sleeve fits over it with the short insert underneath.



  5. Fit the long insert inside the Signo DX barrel, wrap the short insert around its front, and fit the prepared G2 sleeve.



  6. Empty and disassemble the Signo DX and G2 refills, retaining their metal nibs and plastic parts.



  7. Sand the cut Signo DX threaded front and the raised sections of the G2 front barrel as pictured.

  8. Cut the G2 front barrel to 2.5 cm, measured from its threaded end.

  9. Cut 1.7–1.75 cm from the rear end of the clear Signo DX refill tube and 2.4 cm from the rear end of the G2 refill tube. Prepare the tubes and nib parts as pictured; keep the G2 tube stopper.

  10. Tape the Signo DX refill front part until it fits securely inside the G2 tube. Assemble as pictured, add tape around the G2 tube to fit the prepared G2 front barrel, and screw the Signo DX tip onto its retained threaded section.



  11. Fit the cut Signo DX backplug over the exposed G2 nib part, with its cut end facing the metal tip. Keep its original orientation for insertion into the barrel.

  12. Insert this front assembly into the Signo DX barrel.

  13. Prepare the smooth G2 grip section, G2 clicker, spring and remaining refill parts, plus the Frixion Colors pen.

  14. Disassemble the Frixion Colors cap and front assembly. Keep its rubber eraser piece, internal plastic piece and front plug.

  15. File the raised edge of the Frixion Colors front plug.

  16. Cut the Frixion Colors front plug to 2.55 cm from the side that originally joined its barrel. Fit the internal plastic piece over the narrow front and cut off the front as pictured.

  17. Remove the obstruction from the Frixion Colors cap and insert the remaining G2 refill tube.

  18. Trim that tube flush with the cap opening and fit its stopper into it.

  19. Trim the G2 clicker as shown in the ruler photograph.

  20. Insert the prepared clicker into the cap in the pictured orientation.

  21. Pierce the Frixion Colors internal plastic piece. Assemble, from left to right in the photograph: G2 metal nib, pierced plastic piece, Frixion Colors plastic nib, then Signo DX metal nib. Use glue if the fit is loose.

  22. Cut the G2 spring in half.

  23. Fit one spring half onto the Frixion Colors rubber piece, then twist the other half into the first, as shown by the blue and pink examples.

  24. Assemble the prepared front-plug section, rubber piece with nested springs, and nib assembly in the pictured order inside the cap. Fit the smooth G2 grip section over the cap.



  25. Attach the cap to the barrel. Fit the ribbed G2 grip section and Signo DX grip over the front, arranging the decorative grips to taste.

  26. Check the completed assembly.

References

  1. ↑ https://hackmd.io/r-5MVBUjSESILF7l2mkNDw?view
  2. ↑ Joey’s F.G.S tutorial, photographs by Joey.
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Last modified
This page was last edited on 3 October 2026, at 15:37.