Suggestions To Restore Vintage Mb Star

[siamackz]

1. It seems that a piece of the black hard rubber has chipped off on this cap top. Any suggestions for how to repair it. I was thinking some PMNBR 9 - I put a blob there and let it dry and then sand it, then I could apply a coat on the entire cap top to help even it out?

2. The cracks on the cap top. I could leave it, but Im worried it going to get worse. If I were to address it, what would you suggest. Would a white super glue like this be the answer? https://www.amazon.com/StewMac-Tinted-Super-Glue-White/dp/B01HYJR1T2/ref=mp_s_a_1_3?keywords=white+super+glue&qid=1566142271&s=gateway&sr=8-3

[Addertooth]

I fear that those who have strong feelings about PMNBR 9 are likely to respond in a very negative way.

[siamackz]

Im expecting that, but I have run out of ideas, so I welcome any suggestions

[fountainbel]

I would suggest to clean and degrease the cavity and fill it up with a few layers of

liquid black celluloid.

The celluloid sticks remarkably well on a rough and clean HR cavity in my experience

Apply thin celluloid layers with an intermediate drying time of at least 12 hours, better 24

hours Then sand and polish.

Francis

[siamackz]

I would suggest to clean and degrease the cavity and fill it up with a few layers of

liquid black celluloid.

The celluloid sticks remarkably well on a rough and clean HR cavity in my experience

Apply thin celluloid layers with an intermediate drying time of at least 12 hours, better 24

hours Then sand and polish.

Francis

Thanks so much Francis, I didnt know celluloid would stick on HR!

[Stylomeister]

I'm assuming we're looking at a chip that has been filled with black cobler's wax.

 

If that was my MB (I have a similar safety) I'd use some Loctite 480 (a black rubberised cement) - I use this for filling in teeth marks in barrel ends and tool marks in section ends (though these can sometimes pop back with some gentle heat) and have had some success with small cap lip chips. It seems to stick reasonably well to BHR and works better with a variety of plastics.

 

You'll want to be super careful with the masking and sanding. I's suggest masking the star off with tape and using a nail buffer to smooth and polish. The Loctite will want to be laid down in layers with lots of patience between applications.

[siamackz]

I'm assuming we're looking at a chip that has been filled with black cobler's wax.

 

If that was my MB (I have a similar safety) I'd use some Loctite 480 (a black rubberised cement) - I use this for filling in teeth marks in barrel ends and tool marks in section ends (though these can sometimes pop back with some gentle heat) and have had some success with small cap lip chips. It seems to stick reasonably well to BHR and works better with a variety of plastics.

 

You'll want to be super careful with the masking and sanding. I's suggest masking the star off with tape and using a nail buffer to smooth and polish. The Loctite will want to be laid down in layers with lots of patience between applications.

I was considering Loctite, I have tried it earlier and it has potential. Ill keep you posted. Thanks

[Stylomeister]

Whats nice about 480 is it finishes clean edge to edge giving a reasonably invisible repair.