ObiDon
Member
I figured it out...
Yay!
I figured it out...
atimmerman88 said:I took your idea and made one similar using scrap materials from work.
Ready to step up my brewing game with starters now
troyh said:My stir plate uses lucite too and looks very similar. I love it.
How'd you cut that big a hole in the center? Hole saw? I worry that I'd crack the lucite with a big hole saw. It seems like a good idea to get the magnet closer to the stir bar. Let us know how well it works.
I've found that more magnets is always better -- you want a strong connection. But my 2" stir bar in a 2L starter is too hard for the fan to turn. A 1" stir bar in the same starter works fine.
Is your fan motor separated from the magnets? I found that I couldn't just glue the magnets directly to the fan, I had to put a spacer between them. I think the magnets interfered with the magnetic field in the motor.
I meant that they have to be farther away from the fan. Before I put a spacer between the fan and the magnets I had similar issues that you seem to have.
In one stir plate I used a half-inch piece of PVC conduit as a spacer and a real aluminum spacer in the other. The spacer is glued to the fan and the magnets are glued to the spacer.
I failed terribly at building this one, everything went wrong. Also, I accidently pulled the wire out that controlled the speed. trying agin tomorrow with a new fan.
This is one of the smallest diy projects but that also means most people are finished before they document anything. Makes it tough to overcome issues. Hang in there. You will get it!
Here's mine, this USB speed control fan is the dopest!
SudsyPaul said:Haven't glued the magnets down, yet, but this about how well it should work, right?
https://www.youtube.com/watch?v=wYz7AVB67dk&feature=youtube_gdata_player
SudsyPaul said:I'll see what I can find before tomorrow. If not, it'll just make that noise for 24hrs
If I slow it down a bit, it stops making noise, but the vortex doesn't reach the stir bar.
I'll see what I can find before tomorrow. If not, it'll just make that noise for 24hrs
If I slow it down a bit, it stops making noise, but the vortex doesn't reach the stir bar.
SudsyPaul said:I saved my self some undesirable winter-walking. I put the stir bar into a 1" piece of 3/8" siphoning tubing, and BOOM, quiet as a mouse. The bar is a bit more susceptible to being tossed out if I go too fast, but it works fine when creating a vortex about 50% of the way down.
Hmm so i scavenged an old computer fan and wired to a USB plug that i then plugged into a phone charger and its running the fan now, but i dont think its 120mm will i still be able to use this for a stir plate you think?
looks like its 80mm fan.
worst case scenario would i be able to glue a washer to the fan then a larger washer onto that to get a wide enough rotation for the stir plate?
can the 80mm fan drive a 2000ml starter?
yes, i use a 200ml Erlenmeyer flask and it works great.
Enter your email address to join: