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Omas Italia'90 Piston Knob Repair?

ASCIIaardvark

By ASCIIaardvark
in Repair Q&A

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ASCIIaardvark Mint

ASCIIaardvark

Posted
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I bought a 2nd-hand Omas Italia'90 for its delightful nib and because I'd heard so many wonderful things about the brand. A few weeks later this happened:

 

xBhZAPr.jpg

 

 

Album with more pics & notes: https://imgur.com/a/OR3YC

 

I'm not sure how to disassemble it any more.

I've heard Omas frequently have delicate parts, so I'm afraid to use too much force on anything. I wouldn't be the saddest if all I recover is the nib, but it's a nice pen despite its lacking an ink window -- I'd like to resuscitate it if I can.

 

Anyone have suggestions?

I couldn't find a disassembly guide searching online, but I think maybe this is a special-edition of a different model that might have more resources if I knew what it was.

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Inkling13 Vintage

Inkling13

Posted
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I bet Francis (fountainbel) would know, and probably have the means to repair this pen stronger than it's ever been. I'd let him chime in though. I've seen a good number of his miracles, and they are certainly mechanical miracles that he works.

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hari317 Museum Piece

hari317

Posted
Posted

I bought a 2nd-hand Omas Italia'90 for its delightful nib and because I'd heard so many wonderful things about the brand. A few weeks later this happened:

 

xBhZAPr.jpg

 

 

Album with more pics & notes: https://imgur.com/a/OR3YC

 

I'm not sure how to disassemble it any more.

I've heard Omas frequently have delicate parts, so I'm afraid to use too much force on anything. I wouldn't be the saddest if all I recover is the nib, but it's a nice pen despite its lacking an ink window -- I'd like to resuscitate it if I can.

 

Anyone have suggestions?

I couldn't find a disassembly guide searching online, but I think maybe this is a special-edition of a different model that might have more resources if I knew what it was.

fpn_1519976500__a3ca2131-3ceb-4f80-92d5-

In case you wish to write to me, pls use ONLY email by clicking here. I do not check PMs. Thank you.

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ASCIIaardvark Mint

ASCIIaardvark

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Posted (edited)

It worked! Rotating that outer green ring does rotate the black piston-shaft.

 

So I'll wait a bit to see if Francis (fountainbel) chimes in. But right now, I'm thinking I'll drill 2-3 tiny holes into each broken section & glue the green parts together careful to avoid touching the black piston-rod -- this time with pins for extra strength when I rotate it. The shear is within a millimeter of a trim-ring, so if I glue it well I think it'll be hardly visible :)

 

Any suggestion for a glue? I'm guessing an epoxy, maybe super-glue.

Edited by ASCIIaardvark
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fountainbel Antique

fountainbel

Posted
Posted

 

I'm thinking I'll drill 2-3 tiny holes into each broken section & glue the green parts together careful to avoid touching the black piston-rod -- this time with pins for extra strength when I rotate it. The shear is within a millimeter of a trim-ring, so if I glue it well I think it'll be hardly visible :)

 

Any suggestion for a glue? I'm guessing an epoxy, maybe super-glue.

 

Your idea of using/installing two small - 1mm diameter? - axial pins connecting the 2 broken parts is surely a good one.

However both parts should be perfectly radially & axially aligned when drilling the holes.

So drilling has to be done while the parts are assembled and perfectly centered by putting a perfect fitting pin in the central bore.

After removal of the bleu glue you can use 2 components epoxy glue and clamp the parts axially- with the centering pin installed - under light pretension for an hour to get a perfect bound.

Wishing you succes !

Francis

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