Weird residue in bowl in an Estate Dunhill from Danish Pipe Shop

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MonarchistPiper

Might Stick Around
Mar 20, 2024
55
49
Uruguay
I was checking my Dunhills bowl, and I found a strange residue inside it that felt like some sort of rubber, the pipe came pre-coated or so it seems, I bought from the Danish Pipe Shop, anyone know what it could be or have any experience with something such as this? I started peeling of what I could but didnt want to continue in case I was messing up the pipe. IMG_6922.jpeg
 

BenMN

Lifer
Jun 21, 2023
2,675
45,461
St. Paul, MN
It is thick water glass.

@georged had a video somewhere where he showed how to apply a thin coating (of proper consistency), then rub it in/around till you think you're done then go some more
 

BenMN

Lifer
Jun 21, 2023
2,675
45,461
St. Paul, MN
A good bit down article, under "how do you prepare a pipe for sale?"


I do respectfully wish they would not do this. It does factor into my decision when considering an estate offering from them. I have rubbed away the excess coating to the best of my ability. It is not fun.

Maybe someone has a suggestion for something to dissolve it?
 

georged

Lifer
Mar 7, 2013
6,236
17,403
It is thick water glass.


Good chance that's the answer.


@georged had a video somewhere where he showed how to apply a thin coating (of proper consistency), then rub it in/around till you think you're done then go some more

Yup.

If you stop short of the excess being COMPLETELY rubbed away with high pressure, little shreds of rubbery stuff will be left behind.

 

georged

Lifer
Mar 7, 2013
6,236
17,403
I do respectfully wish they would not do this. It does factor into my decision when considering an estate offering from them. I have rubbed away the excess coating to the best of my ability. It is not fun.

Maybe someone has a suggestion for something to dissolve it?

Nothing will dissolve it that won't also destroy the wood.

Sanding is your best bet, but without the right tools sanding is both tedious and imprecise.
 

MonarchistPiper

Might Stick Around
Mar 20, 2024
55
49
Uruguay
A good bit down article, under "how do you prepare a pipe for sale?"


I do respectfully wish they would not do this. It does factor into my decision when considering an estate offering from them. I have rubbed away the excess coating to the best of my ability. It is not fun.

Maybe someone has a suggestion for something to dissolve it?
Is it safe to smoke? Should I rub it out fully? Leave it as is?
 

MonarchistPiper

Might Stick Around
Mar 20, 2024
55
49
Uruguay
Good chance that's the answer.




Yup.

If you stop short of the excess being COMPLETELY rubbed away with high pressure, little shreds of rubbery stuff will be left behind.

Will that ruberry excess do anything to how the pipe smokes? Cause I did not rub it all out. Just a bit that was peeling off.
 

greeneyes

Lifer
Jun 5, 2018
2,344
12,870
If it's water glass, the material is rubbery because it hasn't been smoked yet. When it's applied and dries it has a rubbery consistency, especially if it's thickly applied, together with a carrier like activated carbon or milk solids.

After smoking several times, apparently the silicate forms a protective barrier that is resistant to 1100°F which protects the bowl from burnout.
 

BenMN

Lifer
Jun 21, 2023
2,675
45,461
St. Paul, MN
They coat all their estates with this, excepting the ultra high end ones. It says so in the description of each pipe = "bowl reamed, new inner coating"

Nik is the one who told me it was waterglass when I had this same question a few years ago

@georged video is what helped me understand not just the proper way to do things, but what exactly I was looking at when those standards were not risen to
 
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