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Tensioactive Behaviour In C/c


arran

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Hi folks

A questio that intrigues me.

My wife has a small onoto nr 3 nib pen in which only small cartridges or a small converter can be used.The monteverde works fine.

After using a diamine blue black cartridge , the inkflow stops suddenly , while holding the pen upside down , the ink stays above as is the case with the squeeze converter from Kaweco.

Question : do diamine cartridges have a small bullet in them to encourage ink flow , or might this one have skipped the putting in?

Some experience with the new squeeze converter ?

Or should I use other ink cartridges?

 

Thanks for support

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Most cartridges and converters contain a spring or a small glass bead inside which breaks the surface tension and allows the ink to fall onto the feed pickup. When I use a cartridge that lacks the insert, I drop in a small piece of shot or a "seed bead".

Edited by Paddler

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International cartridges usually have a plastic bead sealing the cartridge, it is this bead that is pushed in when you "pierce" the cartridge with the nipple. I am not sure how Diamine carts are done, but check your sealed ones.

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  • 4 weeks later...

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Metal ones are better

Not if they corrode, they aren't.

Kaigelu went through a batch of c/cs with plated brass balls in them (K300, K356 and some others in 2012). The plating corroded through, then the brass corroded leaving a fine sludge of copper carbonate in the ink, changing the ink green and risking clogging the pen. So, no, in general I would not agree with you, but I might agree if you specify the metal. Metals, unless fairly noble in character, risk corroding in ink, while plastics & glass do not.

 

Regards,

 

Richard.

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Not if they corrode, they aren't.

Kaigelu went through a batch of c/cs with plated brass balls in them (K300, K356 and some others in 2012). The plating corroded through, then the brass corroded leaving a fine sludge of copper carbonate in the ink, changing the ink green and risking clogging the pen. So, no, in general I would not agree with you, but I might agree if you specify the metal. Metals, unless fairly noble in character, risk corroding in ink, while plastics & glass do not.

 

Regards,

 

Richard.

 

I would use a stainless steel ball.

 

Glass might work.

 

Plastic does not have enough mass to make it work. I have a few converters where the plastic ball is stuck in the ink in the back of the converter. The plastic ball does not have enough mass/weight to fall through the ink to break the surface tension holding the ink to the back of the converter.

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