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How To Fill This?

waterman flex eyedropper

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14 replies to this topic

#1 Ray_NEMBFV

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Posted 26 July 2016 - 22:15

Mailman again. It's a Waterman, but I've never seen an eye dropper like this. I presume I know the answer to this, but I'll ask anyway since I'm out of ideas. I need a syringe, right? I'm a diabetic and I had to order a stupid syringe from Goulet! - I switched to pens two years ago, don't even has an emergency stash.

I dipped it and the flex is fun. I just gotta fill it. I'm open to any ideas that won't ruin my wife's carpet...

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#2 Sasha Royale

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Posted 26 July 2016 - 23:51

Nice nib !  Is the "reservoir" removable ?  


Auf freiem Grund mit freiem Volke stehn. 
Zum Augenblicke dürft ich sagen: 
Verweile doch, du bist so schön ! 


#3 Ray_NEMBFV

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Posted 27 July 2016 - 00:41

Sorry, yes, the glass cartridge has a rubber "nipple" on the end and does separate from the section.  It does roll back, a little, but I didn't want to roll it off for the sake of a little extra room.  I found some pipettes on Amazon for a couple of bucks (not that I want to wait that long, but I found them and ordered them).  There's just not a lot of room in the opening of the cartridge....  Is a great flex nib....



#4 Sasha Royale

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Posted 27 July 2016 - 01:11

Excellent !  

The insulin syringe holds less ink than the ones from Goulet, and the tiny needle is slower in delivering liquid.  However, they should function acceptably for ink delivery into the cartridge.  

My first refilling syringe came from a diabetic coworker.  After six months of use, I broke the fragile needle.  It's worth a try, is it not ?


Auf freiem Grund mit freiem Volke stehn. 
Zum Augenblicke dürft ich sagen: 
Verweile doch, du bist so schön ! 


#5 Force

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Posted 27 July 2016 - 03:45

Interesting read

 

It's one of the first disposable cartridges, of glass, and would have been a throw away item. Like modern polyurethane cartridges they came in boxes of 6 or 8 or 10. There are also different lengths for different Waterman model pens.

 

They have a nipple end and push into the rubber seal. The mouth was sealed with a wax pellet which is pushed inside the cartridge as you can see with yours.

 

If the rubber seal has hardened with time it may be hard to remove or even bonded to the glass. You will have to go around it and ease it away.

 

Here is the end shape,

 

 

 

alternatively leave it in place and vacuum fill the pen,

 

 

 

 

These coffee storage vacuum pots can be purchased for about £14.



#6 FarmBoy

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Posted 27 July 2016 - 06:33

Another reference.


San Francisco International Pen Show - They have dates! August 23-24-25, 2019 AND August 28-29-30, 2020. Book your travel and tables now! My PM box is usually full. Just email me: my last name at the google mail address.

#7 konis

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Posted 27 July 2016 - 09:48

Glass catridges was produced in three sizes.

fpn_1469612324__51.jpg

fpn_1469612373__52.jpg

Mid size is the most popular and quite easy to buy.
I recently bought a whole pack of medium cartridge size
fpn_1469612874__22.jpg
regards


#8 drop_m

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Posted 27 July 2016 - 13:31

Nice pen and nib! As others have said, it's a cartridge pen - one of the first - so you've to pull out the glass cartridge and fill it with something.
 
By the way: Force, nice idea the MacGyver-coffee vacuum filler, really like it!


#9 AD64

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Posted 27 July 2016 - 18:17

Interesting read

 

It's one of the first disposable cartridges, of glass, and would have been a throw away item. Like modern polyurethane cartridges they came in boxes of 6 or 8 or 10. There are also different lengths for different Waterman model pens.

 

They have a nipple end and push into the rubber seal. The mouth was sealed with a wax pellet which is pushed inside the cartridge as you can see with yours.

 

If the rubber seal has hardened with time it may be hard to remove or even bonded to the glass. You will have to go around it and ease it away.

 

Here is the end shape,

 

attachicon.gifDSCN0144.JPG

 

attachicon.gifGlassCartridges.jpg

 

alternatively leave it in place and vacuum fill the pen,

 

attachicon.gifDSCN0849.JPG

 

attachicon.gifDSCN0850.JPG

 

attachicon.gifDSCN0858.JPG

 

These coffee storage vacuum pots can be purchased for about £14.

 

The mind boggles. I would love a step-by-step description of how this works.

 

Thank you!



#10 Force

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Posted 27 July 2016 - 19:53

 

The mind boggles. I would love a step-by-step description of how this works.

 

Thank you!

Place the assembled nib section with glass cartridge into a bottle of ink and then place the bottle into the vacuum chamber. Using the supplied pump extract as much air as possible. The air inside the cartridge will bubble out through the ink leaving a partial vacuum inside. Letting air back into the chamber results in that partial vacuum being replaced by ink. These vacuum units cannot produce a pure vacuum but it's enough to produce a partial fill of ink.



#11 RMN

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Posted 27 July 2016 - 20:41

Place the assembled nib section with glass cartridge into a bottle of ink and then place the bottle into the vacuum chamber. Using the supplied pump extract as much air as possible. The air inside the cartridge will bubble out through the ink leaving a partial vacuum inside. Letting air back into the chamber results in that partial vacuum being replaced by ink. These vacuum units cannot produce a pure vacuum but it's enough to produce a partial fill of ink.

 

That's applied physics for you.... :D

 

It will work! The better the vacuum, the better the fill.

 

 

D.ick


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Freedom exists by virtue of self limitation.

 

 

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#12 AD64

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Posted 28 July 2016 - 00:00

Place the assembled nib section with glass cartridge into a bottle of ink and then place the bottle into the vacuum chamber. Using the supplied pump extract as much air as possible. The air inside the cartridge will bubble out through the ink leaving a partial vacuum inside. Letting air back into the chamber results in that partial vacuum being replaced by ink. These vacuum units cannot produce a pure vacuum but it's enough to produce a partial fill of ink.

 

This makes me so happy to know. I'm now imagining this method could be used to fill all sorts of converters. 

 

Thank you for showing me the light. Oh wait, light doesn't happen in a vacuum right? I may need another physics refresher course.



#13 Ray_NEMBFV

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Posted 28 July 2016 - 02:20

Awesome information! Thanks to all. I found later that there's a blind cap on the end of the barrel, so the cartridge comes out and goes in quite easily. I actually found a large syringe at my work (don't know what a large syringe is doing at a coffee plant, but my QA colleague had one). It worked great, but the nipple appears to be more a part of the glass cartridge than part of the pen (R. Binders article for replacement). But filled it and it works fantastically! Very responsive nib, and it seems to hold s good deal of ink for that type of pen (in general, a cartridge). Going from hairline to BB is really cool.

#14 drop_m

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Posted 28 July 2016 - 06:56

Place the assembled nib section with glass cartridge into a bottle of ink and then place the bottle into the vacuum chamber. Using the supplied pump extract as much air as possible. The air inside the cartridge will bubble out through the ink leaving a partial vacuum inside. Letting air back into the chamber results in that partial vacuum being replaced by ink. These vacuum units cannot produce a pure vacuum but it's enough to produce a partial fill of ink.

 

As i've said.. MacGyver-coffee vacuum filler! Really good idea  :)


Edited by drop_m, 28 July 2016 - 06:56.


#15 Force

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Posted 28 July 2016 - 07:08

 

That's applied physics for you.... :D

 

It will work! The better the vacuum, the better the fill.

 

 

D.ick

Yes, my last and final place of 'paid' work had commercial vacuum pump chambers for degassing moulding resins. I could draw them down enough to 97% fill a converter/cartridge.







Also tagged with one or more of these keywords: waterman, flex, eyedropper



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