Stereo (dual gang) push-pull or push-push potentiometers (for filter based / Wal style pramps)

[MoireBass]

I recall this being an option with at least one manufacturer years ago. You literally stacked the individual pots on a shaft to get the number and values needed. The brand name will come back to me, but this was for a complex engineering control application, and I don't think cheap was part of the equation.

Almost any pot manufacturer can do this - if you're able to order enough parts to make it worthwhile to them.
The internal construction of pots is designed to be modular and interchangeable. A 50 Kohm resistive element is the same size and shape as a 250 Kohm element. Almost any manufacturer could make up, for example, some dual-gangs with that combination. They don't because there isn't much demand for those. Bassists and guitarists are a small volume application to them.

 

[Kinkh]

That sounds like one hell of a project :O
Glad to hear some of this kind of experience! Unfortunately for me, it sounds way more complicated at this moment, than I can handle. It's good to know that it can be done though, should I ever need to go that route. Thanks for the info!

 

[Kinkh]

Regarding my research and the Omeg order... With all the measurements done, I don't think I'll be ordering the special push-push 2 gang pots from them - the 8mm bushing is unusable to me (and the other guys interested in this project with me). Thinning down the wood layer for our back routed basses is a no go
On the other hand, I will be asking for a quote for the regular 2 gang C taper pots. For the switch, I'll risk it and drill two extra holes on the bass...

With regards to that, I think I'll need some more help: where is the best place to search for toggle switches wit a 12mm or similar bushing?
So far I've only found the huge switches that are 12mm and I'll be needing the mini ones. Banzai has some, but only up to 9mm (Not counting the MEC ones for 17€+, that't above my budget).

 

[A9X]

Almost any pot manufacturer can do this - if you're able to order enough parts to make it worthwhile to them.

Sure, a fact I've been aware of for decades having designed a lot of electronics during that time. Now as the OP only wants a couple, not a couple of hundred thousand, this helps him how?

 

[Kinkh]

Update: I have gotten a final quote from Omeg:
10 pcs of 2 gang 10K C taper pots, model PC2G16ECO, is 6.66 GBP per pot.
Manufacturing time is 4 weeks.
When shipped the parcel contains a full customs declaration for easier import.
(If anyone is is interested shipping is 14 GBP to Croatia)

@Passinwind, I will post this info in your thread as promised!

Thanks for all the help!

EDIT: now I've noticed that I got a nice heavy metal price

 

[Alex Masters]

Just to say that Omeg are an excellent manufacturer and offer a lot of configuration options and can handle small run volumes. I ordered some linear pots from the P20 series with 12mm bushings, 6mm splined shaft, stepped detent on volume etc. They made up a sample set for free because I was ordering 100.