Sheaffer Snorkel Inner Cap Liner

[eckiethump]

This adhesive has a rubbery texture, I wonder what liquid/solvent, if any can be used to release it.

I have a Snorkel demonstrator cap I wish to remove this metal liner from to restore the cap. I have in the past, many times used a careful application of heat to remove the metal inner cap liners from PFM's and Sheafer caps, this one, I'm nervous about the heat application.

TIA

Eric

[tamiya]

sounds like it's some form of rubber cement contact adhesive?

 

Sorry have zero experience ungluing that part. Wow rare clear plastic... don't envy your trepidation in working on that!!

[eckiethump]

Managed with no grief, ever so gentle heat, to get the inner cap liner out, now I wish to clean the parts, prior to painting, as it was originally, only where glued. I'll be able experiment on the metal inner cap liner.

I do know which solvents, not to use, on the clear cap part.

[Vintagepens]

Eric, Snorkel demo caps were painted with black celluloid lacquer on the *outside* to hide the glued areas where the inner liner was attached.

[eckiethump]

Eric, Snorkel demo caps were painted with black celluloid lacquer on the *outside* to hide the glued areas where the inner liner was attached.

.

That will explain how it has worn away? Any idea on the chemical composition of the black celluloid application ?

[fountainbel]

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That will explain how it has worn away? Any idea on the chemical composition of the black celluloid application ?

 

Eric,

I make a solution of black celluloid shavings and acetone.

Make the solution not too thick, viscosity being approximately like olive oil .

Apply a layer, let it dry for 24 hours and apply again according necessity.

Lightly sand with 600 and finally 1000 grit and polish afterwards

Wishing you succes !

Francis

francis

[Vintagepens]

True celluloid lacquer might not be easily available in Europe. It can be bought in the USA, though, from companies that specialize in musical instrument restoration -- guitars, in particular.

I would recommend spray application with an airbrush.

 

A home made lacquer made using black celluloid shavings will likely not have enough pigment to provide sufficient opacity. Keep in mind, too, that you are applying it to a cap that isn't itself celluloid. A thinly sprayed coat will put less solvent into the cap's material.

[fountainbel]

True celluloid lacquer might not be easily available in Europe. It can be bought in the USA, though, from companies that specialize in musical instrument restoration -- guitars, in particular.

I would recommend spray application with an airbrush.

 

A home made lacquer made using black celluloid shavings will likely not have enough pigment to provide sufficient opacity. Keep in mind, too, that you are applying it to a cap that isn't itself celluloid. A thinly sprayed coat will put less solvent into the cap's material.

 

Thanks for zooming in David, much appreciated !

Although I successfully used my home made liquid celluloid for re-coating barrels , it remains a delicate and time consuming operation. I've also already appleid it on acrylic parts with excellent results.

However the celluloid lacquer you've suggested looks a better, faster alternative.

i've located a seller in the UK who sells black into cellulose lacquer in an aerosol bottle, see link below.

I suppose the lacquer you suggested is also nitro cellulose ?

Thanks & regards,

Francis

https://www.rothkoandfrost.com/wood-finishes-c15/lacquer-and-paint-c34/dartfords-nitrocellulose-guitar-lacquer-p39#attribute%5B3%5D=239

[eckiethump]

Thank you, Francis, David, black cellulose nitrate ordered.