Right, a magnetic stirrer, that's what I meant.
I see your point about a fan not being powerful enough, but I really do think it will work.
First of, the power of a fan is rather individual and I know of PC fans that are very weak while some others are more powerful.
And second, I will begin by cutting of the blades of the fan. So it will not need to put power into performing it's original task.
Although a motor is still to be prefered (and I own a lot of small motors, the problem is the question of how to mount it, I have pulled smaller motors out of lots of things and some of them are for sure usable)
The liquid and the amounts of liquid that are to be stirred aren't very large nor very dense. Ok the liquid is sort of dense, this stirrer is meant for mixing liquids for personal vaporizer (e-cigg) which consists of 30% PG(Propylene Glycol) and 70% VG(Vegetable Glycerin). PG is almost like water while VG is really thick like a light syrup, when you mix these two liquids and adds flavour concentrates the mix needs to steep for anything between 1day to 30 days or more, depending on what flavour you are using. And I have a recipe for a liquid that needs to steep(I'm not sure if steep is a ordinary word or if it is made up by vapers although it's more likely to have been used by brewers long before vaping came along, but to steep a liquid is to leave it to mature).
And I have heard and want to find out if it''s true that mixing the liquid in a magnetic stirrer for some time can decrease the time needed to develop the flavours of a mix, one of my favorite recipe's needs 4 weeks to properly develop, while others need 7 days. And it would be great if I could put the mix into a magnetic stirrer for a number of hours or a day or two and be done with it.
If it's even possible to speed up the process like that I don't know but I want to find out, and I think that I have a fan that would be sufficient to test this.
If the results is positive than I would like to proceed to build a real motorised version, but I'm curious, what kind of motor is best suited for a task like this?
Running at hours and being able to be controlled regarding to speed?
Oh and I might just say that steeping with heat is not something I want to do since it ruinse the shelf time of the juice.