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Post Info TOPIC: Onoto repairs


Seasoned

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Onoto repairs
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Can anyone please give me some advice on how a vacuum fill type Onoto works?  I have an old Onoto pen that my mother used in school about 1952. It is greeny sort of celluloid looking pen and when you unscrew the black end at the bottom of the barrel it extends out, attached to a rod.  Obviously there is a way for the ink to get into the pen, but its not sucking up any water. 

How do I go about attempting to pull this little baby apart to fix it?

Also, the gold nib is bent over at almost 90 degrees at the point.  I presume these can be straightened, but needs an expert to do it.

Hopefully someone can shed some light on this pen for me.  I haven't owned one like it before. 

Thanks.

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The section on these is threadded & often sealed with shellac. You'll most likely need some heat to open it up. After the section is out (& soaking to be cleaned) remove the threadded nut on the end of the filler rod just inside the barrel. remove any of the old seals. Remove the filler rod from the blind cap end. Clean the barrel inside & out. Measure the barrel inner diameter & cut a new fill rod seal. I use the seal cutting kit & seal material from david nishimura, vintagepens.com.

reinsert the rod back in the barrel. place the seal and nut on the rod, replace the section with a bit of section sealant on the threads for a good seal.

This is a fairly advanced repair even moreso if the barrel end packing unit has failed. I can't say one way or the other if the nib can be saved until i see it for myself. Any chance of pics?

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Seasoned

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I have a Conway Stewart 15 and an Onoto the Pen No50, both needing new sacs.

Does anyone know what size sacs go in these respective pens please?  At the moment the lever won't move more than about 1/8" and the pens have a slight rattling sound, like old disintegrated sac, bouncing around.

Do these pens have sections that pull out with heat, or are they threaded?

Thanks.


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Seasoned

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Dennis,

The nib is not as bent as I thought; however still damaged.  Unfortunately, I don't have the facility to take a good pic of something that small in close-up mode.  If I do, I'll post it for you to look at.

Thanks again.

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If you are what you eat, then I'm easy, fast and cheap! 
 
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No problem bud. Just let me know.

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Tu ne cede malis sed contra audentior ito
~Yield not to misfortunes, but advance all the more boldly against them



Seasoned

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Thanks Dennis.  Any thoughts on the sac sizes above for my CS15 and Onoto 50? 

Cheers.


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If you are what you eat, then I'm easy, fast and cheap! 
 
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They will most likely take a #16 or a #14. I'd go with the #16 first though. It's the most commonly used size of sac in vintage repairs.

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Tu ne cede malis sed contra audentior ito
~Yield not to misfortunes, but advance all the more boldly against them



Seasoned

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Thanks a lot.  I'm sorry I got beaten for your invisible auction #3 ashamed

I'll think about your tool kit suggestions and work out a few things.

I have just gotten the sections out of my two pens above and there are bits of solid sac 'fossilized' around the section.  Should I just pick at it with my fingernail, or should I use something stronger, like my wife's nailpolish remover (acetone) to get it off.  I don't wan't to damage the section in doing so.

Sorry to be a pain, but I've learnt a lot from this forum in the past few days.

Regards, Gerard.

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If you are what you eat, then I'm easy, fast and cheap! 
 
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LOL man your not being a pain at all. Repair questions are exactly what this forum is for.

Honestly, I would have felt bad if the price had gone up much higher. It was a Rage Red Parker 21 Super. The end price of $72 was on the higher end of fair for this pen. Don't worry, you'll win one. I plan on making those mystery auctions a staple in my sales. I have a lot of fun doing them & some of the guesses I get are pretty crazy...lol.

The Repairs:
My first suggestion is to pick up a set of my FP repair DVD's. I'm not on the sales end of them anymore but I can point you where you can find them. They cover all of the basics of repair on lever, button, sheaffer snorkel and touchdown, Parker aerometric, under a 51's shell, and vac fill. There's a lot of other general info, how to set a feed/nib, buffing/polishing and that sort of stuff. Honestly (and as humbly as possible), it's the best $40 bucks you'll drop on repair tools. My former partner is selling them in ebay, but I know where you can find them cheaper.

Ok, the section. Never use acetone on a section unless you KNOW it's not celluloid, plastic or other material disolved by acetone, like hard rubber or solid metal. For the ossified bits of sac on the nipple. Get a small hobby knife/xacto and scrape them off. Use the flat of the blade to make sure the surface is clean & smooth. I take a high grit fingernail buffing board and smooth the surface when it's cleaned off.

Good luck & keep the questions coming.
Dennis

__________________

Tu ne cede malis sed contra audentior ito
~Yield not to misfortunes, but advance all the more boldly against them

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