Sanding vulcanite stems. still learning

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starship

Starting to Get Obsessed
Aug 23, 2025
105
691
Summerville SC
If im Sanding with gray 3000G sandpaper, and get brown residue on the sandpaper, I must still be sanding oxidation? If I sand and only black or no residue, i'm through the oxidation.
 

xrundog

Lifer
Oct 23, 2014
2,288
25,092
Ames, IA
Different formulas of rubber can sand differently. Brown is really common. 3000g is really fine so it could take awhile. I like to wet sand with 800g. Even that isn’t fast.
To check your work, clean the stem off and look at it in direct sunlight. You should be able to spot the oxidation.
 

mingc

Lifer
Jun 20, 2019
4,515
13,314
The Big Rock Candy Mountains
If im Sanding with gray 3000G sandpaper, and get brown residue on the sandpaper, I must still be sanding oxidation? If I sand and only black or no residue, i'm through the oxidation.
You know you've reached clean vulcanite when the water runs clear while wet sanding. Or at least that's my experience. I try to stop sanding when I reach that stage. :)

Weirdly enough, clean vulcanite still produces brown dust when dry sanded.
 

Briarcutter

Lifer
Aug 17, 2023
2,085
11,622
U.S.A.
There are different levels of oxidation. Very mild may be removed by only 3000 grit,steel wool or manicure blocks. Without polishing you'll still end up with a matt finish,it depends on what your own acceptance level is. Without polishing you'll never achieve that "mirror" polish look. But if it's highly oxidized (brown) those methods may still work but it would take forever. Sand paper and polishing wheels work great and don't destroy stems, pipe makers have been using this method for many years😉
 
Last edited:

Papamique

Part of the Furniture Now
Mar 11, 2020
861
4,066
Saying that sanding and buffing “destroys” stems when that is the primary method many people use to achieve good results is pretty offensive.
If you are “still learning” I would suggest starting out with cheap pipes and ‘softer’ alternative methods and progress to sandpaper and buffers (still with cheap stems) after you become more knowledgeable.

To be honest I jumped in head first with sand paper and especially buffers and over buffed buttons, destroyed the lines and shank stem connection, logos magically disappeared, the stem ended up much smaller then the shank etc and I was left like 😳 WTH did I just do?

I think you can recommend a softer safer way to beginners without being offensive. Of course, it all depends on how people choose to perceive it too.