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Nib Removal


dubhe

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I have an early 70s 146 which I am trying to remove the nib section from. It is the first time I have removed one that is still glued in from when it was produced. My home made tool is not turning the nib holder, is there something I can soak the pen in over night to loosen things up?

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I would soak it in warm water for a couple of hours before I tried to remove the nib. Have you previously removed a nib from another 146 using the same tool?

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That thing is awesome. Well done!

 

Heat will help, water might, and I would say dish soap can't hurt, but don't use anything harsher. After soaking, you can use a heat gun or hair dryer to heat up the area before trying the wrench... Not too much, but heat definitely softens old glue and shellac etc.

 

And don't force anything no matter how frustrating it is... Always bears repeating.

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Gentle heat from a hair dryer. GENTLE!!! If it's too hot to touch,back off.

 

Or Chrissy's warm water trick may do it.

 

As long as the tool fits, it should be fine. Once the 'seal' is broken, it should come out easily, with fingers.

 

Good luck.

Edited by CS388
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Montblanc uses/used a silicone sealant with a low shear strength, and low adhesion, to form a gasket in place, not glue. Gentle heat will help it to release. Be gentle though - it is easy to crack the thin resin of the section, or to damage the collar around the nib and feed. The material of both is fairly brittle.

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Got it off, hot water did the trick! Have damaged the collar just a bit though, and although it is reuseable, can I buy a replacement for a single unit barrel? The only spare I have is for a more modern one (the thread doesn't go as far on the replacement one).

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If I use silicon grease to reassemble I should be ok. The square bits that the 'tool' locks into had rounded a little that's all.

 

Knocking out the feed and nib is tomorrow's job, anything I should watch out for? Is reassembly straightforward?

 

Thanks everyone, I'm trying to make myself a 146 for daily use using rescued parts!

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I would not use silicone grease. There is debate about whether silicone grease has a negative impact on the material that MB uses. (side note - a friend is a chemist, and has used pieces of MB black resin for "unknowns" analysis in chem labs. They have yet to determine what it is.) Silicone grease is a lubricant, not a sealant, and given the fragility of the MB resin I would be wary of using it for fear of over tightening the nib unit.

 

I feel far more comfortable using a rosin based thread sealant or even bees wax to seal if one doesn't have access to a low shear strength/adhesion silicone compound. Tighten finger tight until it stops. Not tight.

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Visit Main Street Pens
A full service pen shop providing professional, thoughtful vintage pen repair...

Please use email, not a PM for repair and pen purchase inquiries.

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Got it off, hot water did the trick! Have damaged the collar just a bit though, and although it is reuseable, can I buy a replacement for a single unit barrel? The only spare I have is for a more modern one (the thread doesn't go as far on the replacement one).

 

You can't buy replacement Montblanc parts like that. Their service level one is very reasonable at £60 and will replace any damaged parts plus a new piston

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Thanks, the heat applied to the collar helped. Got it in but had to use a lot of force! I think the feed was too dry so the fiction was too high.

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