Funny, but I do the exact opposite. I have some really fine writing instruments (though not a Montblanc) and for those I can, I replace their cartridge with the G2 refill. In my opinion, the gel ink in the G2 is among the best available and the refills cost a lot less than the expensive name brand replacements. the results look better and write better than what you are doing.

$200... for a PEN!!?? that is incredibly overpriced, but that not even the part that writes. the part of the pen that does all the work is the ink cartridge writing and all you know Why is so much crap overpriced these days! Go back a couple hundred years and you could buy whole countries for the cost of that pen : P wait, now wityh that thought i will take the $200 in my piggy bank and build a time machine. then after that i will buy a country... Instead of STUPID OVERPRICED PEN : ). who needs such a fancy pen anyway i am fine with a regular old ballpoint pen thats like $5 for a 25pack. darn business making pens 200 dollars!

I didn't have access to a razor blade or exacto knife set so I used my girlfriends nail file (emory board) to sand down the plastic to perfection. The pen retracts perfectly. I would suggest the sanding method to ensure it precise. If you cut it, you might cut to much off etc. Here it is finished!

That's genius.

And everybody looks at the pen you have and thinks " That cost less than $5" LOL The Americans developed a pen that would write in zero gravity, cost... $10,000 to develop. The Russians used a pencil! Russia ONE, America NIL... The same as this instructable! Oh Btw. Did the cheap pen work?

Wrong. $195.00 in 2 minutes. =P

Does it have to be the pilot G2- 05

Uh. Not to be awful, but what could you possibly be writing that could be worth that kind of money? Really. For most uses, go to Target or Walmart during the Back to School sales and pick up a pack of Bic 10/$1 and go spend your money on something that will actually do somebody some good.

What a waste of $13 for two Monte Blanc refills.  It worked fine for a couple hours and has been skipping ever since.  Neat idea but it just doesn't work.

You can also just ask a pen in class and never give it back, secretely take a pen out of someone's pencil case ^.^
But in lot of stores, bares.. you can take free pens, sometimes they write verry good

Well great idea but honestly, the Mont Blanc ink isn’t the best ink for writing, what makes the pen is its great shape. If you really want the best writing ink you should go for ViscoGlide-ink it’s priced around 5$ but you’ll never wrote like this before! (It even fits into a Mont Blanc Pen because some people prefer this ink They have it in several sizes or as a standalone pen without exchangeable ink)
Check my review here:
http://hubpages.com/hub/best-writing-pen

I tried this, and it was great... for about a month. That's when the Mont Blanc refill dried up and quit working. You see, that's the thing about most rollerball pens: they have to be capped to keep from drying out. Mont Blanc pens included. If you look at the actual Mont Blanc rollerball pens, you'll see that they all have a removable cap.

But, I may have a solution: A bit of internet research and I found Schmidt Capless Rollerball Refills. They come in short and long versions. The long version looks like the same length as the Mont Blanc refills (4 1/4"). They sell for around $4 each, and appear to be quite similar to the Mont Blanc refills... they may even be made in the same factory in Germany!

I tried this and it worked perfectly, thanks!

I've gotta try this, I even have a G2 at the ready, now all I need to do is visit office depot... 5 stars!

Great idea!!!

 what is so special about this mont blanc ink?

 well i live in india ....so $200 is definately very huge amount for a common man 
but...i'm student so even $12 is too much ...i can get a parker roller for 5-6 $ ..so good for high earning people...not for all...