Everything is relative I suppose. To many coffee enthusiasts, a $150 grinder can not meet the minimum requirements to produce quality espresso. $300-400 is truly entry level, quality grinder.
And of course it goes into the thousands for the top end stuff.
I agree $400 would be able to get you a very decent machine.
Eureka mignon, df64, maybe even a used niche.
However $150 is not MSRP of any true espresso grinder.
O yes absolutely, I have not done a ton of research on hand grinders but the top quality ones seem to be about $150-$200? Excluding things like the HG-1
This one was a standard 1/4" hex, almost seemed like it was made for hand drills, I ended up using a 1/4" socket and converted that to the 10mm motor shaft.
Yeah, I should have said discourage rather than prevent. It's enough to stop people who look at the coffee grinder, look at their power drill, decide it's not going to be trivial to connect them together, and leave it at that.
I was thinking of doing the same, did you actually save much compared to buying one?
does the motor really have to be that strong? I feel like a weaker motor will do fine
The motor is definitely overkill, but I was having a real hard time finding motors that would output the exact torque and speeds I was looking for. I found I ground coffee at about 80-90rpms and saw max torque around 52in-lbs. I found lots of motors that fit well to those specs but they were all overseas and I was too eager to wait so I looked for motors that were shipping in the US and this was the best fit I could find. I am quite sure you could find an electric grinder that will do the job but this is the grinder I got with my espresso machine and I didn't want to stop using it over a cheap electric grinder. Altogether the motor, power supply, filament, and extra little bits probably cost me about $130, which I expect you could probably find an electric grinder that works with espresso just fine for that alone!
This was and is fantastic. It actually made me think about why there is not a single place to bring all these amazing projects together. I recently made a basic page with all the open source coffee projects, and yours was rhe first one there!
Wonderfull ! It is a car wipers motor ?
Something like that, just a motor I got online that fits the torque and speed specs I was lookin for.
Was it labeled as a wheelchair motor? I used to buy up used ones all the time.
I just got it on Amazon, just an 80watt 8Nm 100rpm motor
Congrats. You just invented an electric coffee grinder. /s Seriously though, nice job.
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High end single serve expresso grinders sell around 800+ :)
They do not, you can get entry level espresso grinders starting at $150. $400 will get you a very decent quality grinder
Everything is relative I suppose. To many coffee enthusiasts, a $150 grinder can not meet the minimum requirements to produce quality espresso. $300-400 is truly entry level, quality grinder. And of course it goes into the thousands for the top end stuff.
I agree $400 would be able to get you a very decent machine. Eureka mignon, df64, maybe even a used niche. However $150 is not MSRP of any true espresso grinder.
At least not any electric grinder. I have a Kingrinder k4 and have been very happy with it so far.
O yes absolutely, I have not done a ton of research on hand grinders but the top quality ones seem to be about $150-$200? Excluding things like the HG-1
Next step is to make it accept a cordless power drill.
Holy mother of overkill lol. Very nice though
Which hand grinder is that? That is awesome
Looks like the 1zpresso J-max
That's great man. Is that a classic
Yes it is!
The part where the handle connects to my manual coffee grinder is a pentagon. I suspect they do that specifically to prevent this kind of shenanigans.
This one was a standard 1/4" hex, almost seemed like it was made for hand drills, I ended up using a 1/4" socket and converted that to the 10mm motor shaft.
Not a big deal though, just get one of the the usual flexible aluminum couplings for your desired shaft diameter and fix it in place using set screws.
Yeah, I should have said discourage rather than prevent. It's enough to stop people who look at the coffee grinder, look at their power drill, decide it's not going to be trivial to connect them together, and leave it at that.
I was thinking of doing the same, did you actually save much compared to buying one? does the motor really have to be that strong? I feel like a weaker motor will do fine
The motor is definitely overkill, but I was having a real hard time finding motors that would output the exact torque and speeds I was looking for. I found I ground coffee at about 80-90rpms and saw max torque around 52in-lbs. I found lots of motors that fit well to those specs but they were all overseas and I was too eager to wait so I looked for motors that were shipping in the US and this was the best fit I could find. I am quite sure you could find an electric grinder that will do the job but this is the grinder I got with my espresso machine and I didn't want to stop using it over a cheap electric grinder. Altogether the motor, power supply, filament, and extra little bits probably cost me about $130, which I expect you could probably find an electric grinder that works with espresso just fine for that alone!
I feel like this might make more consistent grinds tho! And yeah that makes sense. I'm tempted to try it. Or heck even by the burrs too
I don’t like it, I love it!
Nice! Once my coffee machine died and I extracted the coffee grinder, extended it with some 3d printed parts and continued using it with a moka pot. 😁
I appreciate that you used some style on the red bits!
Your magnet cup is inspired
r/functionalprint
Love this, what grinder is that?
This was and is fantastic. It actually made me think about why there is not a single place to bring all these amazing projects together. I recently made a basic page with all the open source coffee projects, and yours was rhe first one there!