Help Tuning A Feed To Reduce Ink Flow

[tjohn]

I'm working on tuning an X750 (presumably a Jinhao) and cannot reduce the ink flow to a reasonable amount.

I've cleaned up the feed that had quite a bit of burring and crud from manufacturing. This is a plastic (Delrin?) feed and it was machined and not simply injection moulded.

 

I've adjusted the nib tips under a 15x triplet to around 0.001". The tipping drags on a 0.0015" feeler gauge but still shows a gap. As received the nib tips were touching and the pen still had the "too wet" problem. This is a really smooth writer with nicely formed broad point tipping. Inverted, the nib writes about as wide as a fine point, but the ink supply is very thin; marginally usable for margin-note type writing. The pen does not drip ink so I do not suspect an air leak. Note that I'm using the converter with Noodler's Ottoman Azure.

 

Does anyone know of any method(s) of tuning the feed to reduce ink flow. As this is a plastic feed the ebonite heat treatment won't work. The feed appears to be in excellent contact with the nib - passes the thin sheet of paper test. There does not appear to be any excess ink in the feed's comb along the sides of the nib or at the section.

 

This is really bugging me as the pen puts down enough ink to feather and bleed through to the back of a page, although not to the next sheet. Another characteristic is that the pen deposits heavily at the very end of a stroke. Much more than any of my other pens.

 

I've literally spent days working on this with no improvement and it's driving me nuts. I should point out that I'm a newbie to all this. That's the reason for the X750. I don't want to damage a fine pen. It all started when I ran across my Dad's Shaeffer Touchdown (with the encrusted sac) and had it repaired. I discovered the pleasure of writing with a real pen instead of a "writing instrument". With a machine shop in my background I couldn't help myself and started reading all of Richard's articles and everything else I could find on the web. Does this turn into an addiction? ;-)

 

Best Regards, TJohn

Edited April 7, 2011 by tjohn

[Quintane]

Sorry you did not received any reply yet. TodaI received a Jinhao X750 as a gift, and I am experiencing the same issue of excessive ink flow. Otherwise, the pen has a great look, good weight, and it is a shame not being able to use it because of its wetness. Did you find some solution finally?

[ninobrn99]

What has worked for me in the past has been pulling the nib out a slight bit so it isn't set fully inside. Also, with the tip up and the breather hole away from you, pinch the shoulders a few times. That closes the gap at the contact point and has limited ink flow for me. Hope it helps.

 

Nino

[Quintane]

I will try both. Thanks.

[Wahl]

Take apart the feed and put a pencil lead in one of the channels, it will reduce ink flow.

 

You will have to try different lead sizes to fit the channel.

[ninobrn99]

Take apart the feed and put a pencil lead in one of the channels, it will reduce ink flow.

 

You will have to try different lead sizes to fit the channel.

Genius!

[Erik Dalton]

Go to gouletpens and buy a #6 nib in medium,fine, or extra fine. Stop messing around with a perfectly normal feed.