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Parker 50 (Falcon) Feed Removal


Mookli
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Greetings,

I have a Parker 50 Falcon with a bent nib, and although I gauge the chance of a perfect repair very slim, I will try my best.

 

The initial problem was the glued in feed. I applied all the reasonable force as I dare, but it didn't budge.

And then I remembered the coefficient of linear thermal expansion!

Approximate numbers are, Stainless 16 X 10-6 and ABS Thermoplastic 73 X 10-6

(meter per meter per degree kelvin)

So cooling it down will make the plastic shrink more than the stainless. Besides that, adhesives generally don't perform well cold.

 

So I made sure it was completely dry, stuck it is liquid nitrogen for about 30 seconds, felt a small pop, and the nib / section came right off.

I could have tried a regular freezer first, but LN is more fun!

 

Everything warmed back up with no damage.

 

http://www.maryhatay.com/Mark/Fountain-Pens/Mixed-Pens/i-2fFH7tx/0/L/Parker%2050%20nib-L.jpg

 

http://www.maryhatay.com/Mark/Fountain-Pens/Mixed-Pens/i-qv5h3mN/0/O/atramentum%20Digitis%20small.jpg

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What of the plastic ? Please keep us posted.

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

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Went OK, not 100% but functional.

 

http://www.maryhatay.com/Mark/Fountain-Pens/Mixed-Pens/i-NmmwVCR/0/L/Parker%2050%20nib-fix-L.jpg

http://www.maryhatay.com/Mark/Fountain-Pens/Mixed-Pens/i-qv5h3mN/0/O/atramentum%20Digitis%20small.jpg

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What of the plastic ? Please keep us posted.

Plastic is fine.

It might be brittle when cold so I just left it alone to warm up.

I cleaned it in the ultrasonic, and avoided contamination from fingers. (oil)

It friction fit back into the section / nib

http://www.maryhatay.com/Mark/Fountain-Pens/Mixed-Pens/i-qv5h3mN/0/O/atramentum%20Digitis%20small.jpg

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  • 7 months later...

Great chemistry in action!!!

http://www.secedu.net/stylebid.com/images/fpn/1.gif http://sweilems.com/2%20(1).png http://www.secedu.net/stylebid.com/images/fpn/letter.png

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  • 2 months later...

Very handy little trick. I was looking for a way to remove the nib from the feed, and this is the only hands on advice. Since I don't have access to liquid nitrogen I used spray on chewing gum remover to achieve the same effect.

 

I have a description on my blog.

 

Thanks so much for providing this method!

Read all about my opinions on fountain pens and other fine writing instruments on www.nibcreep.com

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Darn, I just gave away my last supply of liquid nitrogen to the local fish processing plant! Now I have to go out and get some more just in case I need it again. :mellow: :mellow: :mellow: !

“Don't put off till tomorrow what you can do today, because if you do it today and like it, you can do again tomorrow!”

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How cool :)

Now to find a source of just a quart of liquid N.

Edited by ac12

San Francisco Pen Show - August 28-30, 2020 - Redwood City, California

www.SFPenShow.com

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Hi all,

 

They make a series of spray can freezers.

Google "freeze in a can" to see a bunch.

They use 1, 1, 1, 2-Tetrafluoroethane. a common Refrigerant gas, The expanding gas will generate temperatures down to about -60 deg.

 

I use this stuff

http://www.amazon.com/CRC-Freeze-Liquefied-Aerosol-Trigger/dp/B000ICBP68

 

This might be more practical for small thermal shock projects.

 

Mark

http://www.maryhatay.com/Mark/Fountain-Pens/Mixed-Pens/i-qv5h3mN/0/O/atramentum%20Digitis%20small.jpg

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  • 8 months later...

Hello, I've recently acquired a Falcon 50 TX with flow issues, even after numerous soaks. I want to get to the feed for a thorough cleaning but don't think I'll have any liquid nitrogen on hand soon and want to avoid having to get a coolant can if possible.

 

Has anyone tried this with some time in the good ol' freezer? How did it go?

 

Also, am assuming that I'll have to push the feed out from the exposed part in front towards the back end?

 

Thanks ahead for any answers.

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I think the freezer will work too, It should not require a lot of pushing, but just come free.

Make sure it is dry before putting it in the freezer.

Good luck and let us know how it went.

 

Mark

http://www.maryhatay.com/Mark/Fountain-Pens/Mixed-Pens/i-qv5h3mN/0/O/atramentum%20Digitis%20small.jpg

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Well, after a few rounds of freezing for about an hour and attempts at coaxing out the feed, nothing has popped out. The upside is that each time, some very dark gunk also seemed to be seeping out, as made apparent by my blackened fingers. The nib seems to be flowing a bit better when I last fitted the pen's converter with some Diamine ink. So feed removal failure via my attempted freezer approach, it appears, but I may not need it done now. Thanks for your advice in any case. Cheers!

Edited by spaceink
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  • 3 years later...

It's a few years later, but this thread helped me a lot - thank you all! I did not have any liquid nitrogen so I tried the freezer. I left it in for up to twelve hours, and tried that several times, but no luck -- not cold enough.

 

Finally found a simple solution. By inverting a can of "Dust-Off" and spraying the section, I was able to get the whole thing super cold and that did the trick. The epoxy came loose and the feed slipped right out of the section.

 

It's probably not something one should do very often, and most probably the fumes are not too safe to breathe! But for the quick freezing needed to separate this Parker Falcon feed from the section, it was a better solution than purchasing and dealing with liquid nitrogen.

 

Thank you to all for the guidance!

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On 8/15/2020 at 9:06 PM, Nyoko said:

It's a few years later, but this thread helped me a lot - thank you all! I did not have any liquid nitrogen so I tried the freezer. I left it in for up to twelve hours, and tried that several times, but no luck -- not cold enough.

 

Finally found a simple solution. By inverting a can of "Dust-Off" and spraying the section, I was able to get the whole thing super cold and that did the trick. The epoxy came loose and the feed slipped right out of the section.

 

It's probably not something one should do very often, and most probably the fumes are not too safe to breathe! But for the quick freezing needed to separate this Parker Falcon feed from the section, it was a better solution than purchasing and dealing with liquid nitrogen.

 

Thank you to all for the guidance!

Ok, I have the same issue.  I've tried your method several times to no avail.  Do you recall if you had to try more than once, and how long you sprayed the thing?  Thanks.

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On 11/10/2021 at 2:23 PM, dicks390 said:

Ok, I have the same issue.  I've tried your method several times to no avail.  Do you recall if you had to try more than once, and how long you sprayed the thing?  Thanks.

Ok, after multiple times it fell out.  You have to spray it over and over at one time.  I used the computer dust spray can upside down.  It got the temperature down to -45 degrees F.  Be careful.  I tried to pull it out by the threads and cracked them.  I only knew it worked when I tried to move it and the guts just fell out.

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