Caesin Star Falling Out Of Montblanc 134 Captop. How To Secure It?

[provis]

Hi all,

 

I have a lovely Montblanc 134 long captop but the caesin star just won't stay on. Every time the barrel is screwed into the pen, the star pops out in response.

 

As a result of it being this loose, it's prone to leaking.

 

Ordinarily, I'll paint the sides of the star with some shellec or rosin, and leave it dry.

 

But since it's such an old pen, and since I've never dealt with caesin, I'm not sure if using shellac would dissolve the star.

 

Can the wise sages here weigh in on what are the proper steps to take?

 

Thank you!!

[fountainbel]

Hi all,

Every time the barrel is screwed into the pen, the star pops out in response.

Looks the point of the nib is pushing the star out when capping......

Simply screw the cap enclosure top out an introduce the nib in the ink chamber till contact with the section front

Could be the nib/feed is to far out, or the nib chamber in the cap enclosure screw is not deep enough.

Francis

[provis]

Thanks, Francis, great to hear from you

 

The nib is properly set and not too far out from the section (it covers the 14c imprint), so I don't think that's the problem.

 

Looking at the star more closely, the groves of the star seems to have shrunk a little bit from edge. The gaps are probably due to this.

 

Do you think think expanding the hardrubber cap with heat can expand the caesin enough to make a tighter seal?

[fountainbel]

Thanks, Francis, great to hear from you

 

The nib is properly set and not too far out from the section (it covers the 14c imprint), so I don't think that's the problem.

 

Looking at the star more closely, the groves of the star seems to have shrunk a little bit from edge. The gaps are probably due to this.

 

Do you think think expanding the hardrubber cap with heat can expand the caesin enough to make a tighter seal?

Hi provis,

I would surely not try to shrink the hard rubber cap, expanding the casein star could work in my opinion.

But you would need to make a brass or steel concave part so the convex top of the star remains intact when expanding.

Given the risks in doing so ,I would simply glue the star in the cap with epoxy.

Sometimes I make new stars manually from PETP, a hard white plastic.

Takes a lot of time, fine filing and fitting.....

Attached a picture showing a star I've made recently for an 134, mounted in the cap.

Francis

 

%5BIMG%5Dhttp://i62.photobucket.com/albums/h89/fountainbel/Repaired%20Vintage%20fountain%20pens/P1000395.jpg

[provis]

Wow that's a lovely 136 long window, Francis!

 

I will take your advice and glue it down with a bit of epoxy, because I definitely don't have your lathe skills to make stars out of PETP!