Motorized Hand Grinder | 1zpresso J Max/ K plus

[@ImRyozanpaku]

Hello, I would love to build this myself. Would you kindly share the parts that were used for this build? It looks fantastic.

[@slush714]

Just stumbled upon this, and it looks awesome! Is there a parts list/cad files anywhere that you could share? I would love to recreate this if possible.

[@CaffeMartellaSingapore]

My friend has the Schematic but I am not sure he will be able to share it.

[@BensCoffeeRants]

With the k-plus it might be possible to have the blind tumbler accessory and have a portafilter under it, if it's powerful enough to grind for espresso ;) Have you tried the K plus vs Cast Burr DF64 yet?

[@CaffeMartellaSingapore]

yes for medium roast there is no problem. It struggle a bit dealing with light roasted beans

[@ISeeFurther]

Is this available for sale somewhere or are the schematics available to download (free or paid)? I tried looking around but it doesn't seem to be accessible anywhere obvious. It's an excellent design and would love to make or buy one for my grinder.

[@YoureSchmacked]

I would like to purchase this please!

[@clockit-app]

Can you please share the fusion 360 files, if any? I am in the process of building this. Plan to use a high-torque stepper motor for accurate RPM control.

[@ColorTR]

how can i buy this looks great!

[@CaffeMartellaSingapore]

You have to buy this kit and its components from Taobao.

[@HoonsCoffee]

What is that! Looks great

[@CaffeMartellaSingapore]

It's a motorized kit for 1zpresso. Thomas and Sunny built it.

[@emil_k]

Agree, very attractive and attention to detail!

[@lukedeauxilium]

​@@CaffeMartellaSingaporeis it possible to buy one?

[@TheCV6869]

Would love to use this with my Jx pro. If only this kit is available

[@CaffeMartellaSingapore]

There are other set up similar to this one and doesn't require assembly. It's plug and play.

[@TheCV6869]

@@CaffeMartellaSingapore Really? that's even better. May I know more info about it?

[@CaffeMartellaSingapore]

@@TheCV6869 I will see if I can get enough fund to purchase one so that I can give it away. But I am looking to buy one soon.

[@TheCV6869]

If anything, I like the design of this one. Looks portable and doesn't take much space. I'm interested to have this commisioned. Btw, I'm from Malaysia ✌🏼

[@CaffeMartellaSingapore]

Hi yes the version I am getting is also very portable.

[@p4lxrich]

Need this.

[@emil_k]

Is this kit available to purchase?

[@CaffeMartellaSingapore]

I will check with Thomas.

[@mrthomasyip]

Hi, this item was shared to me by another coffee enthusiast hence I am not be able to make them for selling.

[@taylorwhite3636]

@@mrthomasyip Share the source if you find out!

[@anterogradus]

Having 3d printed details touching food is a really bad idea. The dominant majority of plastics is not food safe. Even for those, which are, separate print head is needed, which prints only food-safe plastic. Even after that, the printed surface is not smooth, which makes good breading ground for bacteria. The last one is not critical for coffe though.

[@doc8125]

I would not be worried about extruded plastic when dealing with hard dry foods that are as large as a coffee bean. With the amount of time it's going to be in contact as well as it being dry and not really being able to collect anything in the 3d printing groves that could cause bacteria growth there really isn't much of any residue that would end up in the final drink you consume anyways

[@doc8125]

For a coffee dripper, a grinds catch cup or something closer to the motor that could get ground up by accident and end up in the grinds I would be more worried

[@anterogradus]

@@doc8125 The biggest problem I see is that 3d plastic is not food safe, which means it could degrade with time, leaking microplastic into coffee.

[@doc8125]

@@anterogradus I really don't see that being too much of a problem (depending on the plastic used of coruse) since there won't really be any wear and tear on that spesific piece

[@raitro]

Why? :-)

[@error.418]

Efficiency. You get the quality of a hand grinder while being able to do other things while it grinds. As an individual making coffee, not a big deal. But if you're working a boutique coffee café where you're doing back-to-back cups for customers who show up for high quality brews, it can be an interesting value proposition. That and just being tired in the morning XD But hey, there's room for everything and everything doesn't have to appeal to everyone. Whatever setup makes you happy is good.

[@ayex86]

Please note that once you grind more than 1 revolution per second you are degrading the aroma of the coffee. I don't know why is that - but it's much better taste-wise to grind very slow.

[@CaffeMartellaSingapore]

The beauty of this set up is variable speed.

[@mrthomasyip]

This device works on a DC motor with a specification of 160rpm while off load. This equate to around 2.6 revolution per second. With beans the speed will reduces drastically down to 1~2 rev in a second. With the voltage controller the speed of rotation can be even reduce the grinding to less than 1rev per second. Ideally hand grinding we are turning at a rotational speed of around 2rev in a second which make up 120rpm.

[@CaffeMartellaSingapore]

@@mrthomasyip this is a great explanation from Thomas. I don't think we are grinding at 1 revolution per second on a hand grinder. It's faster than that.

[@adenrogers6259]

@@mrthomasyip Hi! Would you mind giving more info on the motor and gearing used to turn the output 180 degrees for the grinder? Possibly some part numbers? I am looking to build something similar for a different grinder

[@gustavomartins10]

@@mrthomasyip Please inform the model of the used engine, there are many options to buy, if you could show a link to sell the engine I would appreciate it