Kingrinder K6 electrical motorized Coffeegrinder (Honeycomb edition)

>> The Project is finished now <<

>> Version 7 (v7) solved a lot of Problems so far<<

• all holes match properly now to each other
• New M3 & M4 Set
• Stronger and thicker Body
• Higher Motor Adapter in Version 7 for mounting a ¼ Inch Bit Adapter (recommended)
• Version 7 will be able to mount also the 32GP-31ZY Motor 
• Watch the right printable Motor Adapter Version 
   

My Benchmark with the Delonghi Dedica EC 685 (modified):

Timemore C2 Conversion (Espresso): Coffeebeans 17,5g - Grindtime: 79,6 sec - Brewtime 26,5 sec

Kingrinder K6 Conversion (Espresso): Coffeebeans 17,5g - Grindtime: 34,7 sec - Brewtime 28,2 sec

The Kingrinder K6 version of the electric interpretation of a manually hand-cranked grinder offers several practical advantages for any interested user:

• The housing consists of only 5 individual parts and has been optimized for a print bed of (220x220) mm2
• All required components can be printed in a single printing process
• The printing process does not require support structures (provided proper positioning is ensured, Look at the uploaded Pictures)

Before you start, make sure of the following conditions:

• Your 3D printer should be properly calibrated so that the dimensions defined in the CAD program match the printed ones (Try a few Calibration Tasks on OrcaSlicer or a Similar Slicer of your choice)

Your Benefits:

• Much faster grinding time than the Timemore C2 Version 
  (Grinding-Disc Diameter C2: 38mm; Kingrinder K6: 48mm)
• Motor upgrade from 12V 32GP-32ZY (80 rpm & 98 rpm) to 12V PGM36-36ZY (160 rpm)
• Easy Installation (up to 20-30 min with all parts)
• Cheap Filament (I recommend: PLA & PLA+, there are no thermal issues while working)
• Cost effective compared to an electrical Grinder on this Level:
  
  
  • (Kingrinder K6 on AliExpress 52€)
  • Motor: 12V 36PGM36-36ZY (AliExpress: 17€ + 11€ Shipping = 28€ Total)
     
• Power Supply:
  • Version 1: 12V & 8A (AliExpress 7,50€)
     
• Shaft Coupling (6mm to 7mm (7mm Kingrinder K6 size is fix) or 8mm to 7mm, depends on your Motor shaft diameter. You can choose 6mm & 8mm; 1 piece coupling = 4€ Amazon Germany)
   
• Controller + Socket + Screws + Cables = 5€ max.

1. Version 1 Total: 96,5€ (Power Supply 12V & 8A)

You will need these electrical and non-electrical (Threads) Parts for Assembly:

• Motor: 12V 36PGM36-36ZY (choose the 160 rpm, which handles dark Roasts easily, lower rpm versions are stronger in Torque, depending on your favorite Task)
   
• DC Motor Controller: 4,5V to 35V, 5 Ampere, 90W (See at the link below)
   
• DC Power Supply:  12V & 8A (recommended, more Powerful)
   
• DC Socket to connect the Power supply to the AC Controller (link below)
   
• Connection Cables (2 times 5 to 10 cm, link below)
   
• Thread-Set of M3 & M4 Screws in Total you will need:
  • 6 x M3*6mm
  • 4 x M3*10mm
  • 5 x M4*10mm
  • I personally choose the Philips screw form

For the complete assembly, additional electronic components are required besides the 3D model (including links to websites, no affiliate links!):

• DC motor with the model designation “36GP-36ZY” in the 12-volt version (You can choose the 6mm diameter or 8mm diameter for your preference. Your shaft coupling must match with the Motor diameter!)

The following model have already been successfully tested: 160 rpm.
(Please note that the torque is sufficient for dark roasts (Southern Italian roast as a blend with 25% Robusta (Canephora) roast & other one with 100% Canephora):

https://de.aliexpress.com/item/1005007432703937.html?spm=a2g0o.productlist.main.5.2648MxkyMxkyal&algo_pvid=5534e0ff-e9d4-46da-8bec-d8f3614e1d5b&pdp_ext_f=%7B%22order%22%3A%2245%22%2C%22eval%22%3A%221%22%7D&utparam-url=scene%3Asearch%7Cquery_from%3A%7Cx_object_id%3A1005007432703937%7C_p_origin_prod%3A-

Shaft Coupling (6mm to 7mm or 8mm to 7mm, Focus on your Motor Shaft Diameter)

6mm to 7mm (7mm is the fix Dimension “Shaft Diameter” of the Kingrinder K6):
https://www.amazon.de/QUARKZMAN-Schraubenkupplung-Wellenkupplung-Stahlverbindungsst%C3%BCck-DIY-Encoder/dp/B0DRNSMVJN/ref=sr_1_9?__mk_de_DE=%C3%85M%C3%85%C5%BD%C3%95%C3%91&sr=8-9&xpid=IxS-vIyKGVaQb

8mm to 7mm (7mm is the fix Dimension “Shaft Diameter” of the Kingrinder K6):

https://www.amazon.de/QUARKZMAN-Schraubenkupplung-Wellenkupplung-Stahlverbindungsst%C3%BCck-DIY-Encoder/dp/B0DRNTDPKP/ref=sr_1_9?__mk_de_DE=%C3%85M%C3%85%C5%BD%C3%95%C3%91&sr=8-9&xpid=IxS-vIyKGVaQb

DC motor controller: 4.5V to 35V, 5A, 90W (weaker motor controllers with 2A are too weak for this purpose), used motor

https://de.aliexpress.com/item/1005007452633921.html?spm=a2g0o.productlist.main.1.693fd117X0lSsn&algo_pvid=93326de5-845f-4f03-96ea-9e29281d46a2&pdp_ext_f=%7B%22order%22%3A%2219%22%2C%22eval%22%3A%221%22%7D&utparam-url=scene%3Asearch%7Cquery_from%3A%7Cx_object_id%3A1005007452633921%7C_p_origin_prod%3A

DC power supply with 12 volts and 8 amperes (a lower current is not sufficient for grinding; 5 amperes were too weak in this test scenario):

https://de.aliexpress.com/item/1005006975464963.html?spm=a2g0o.productlist.main.9.61052634POWZhR&algo_pvid=3c142e16-d84c-4989-8eb8-9d80f491bd64&pdp_ext_f=%7B%22order%22%3A%2210605%22%2C%22eval%22%3A%221%22%7D&utparam-url=scene%3Asearch%7Cquery_from%3A%7Cx_object_id%3A1005006975464963%7C_p_origin_prod%3A  

DC socket for supplying power from the power supply to the motor controller:

https://de.aliexpress.com/item/1005005827656117.html?spm=a2g0o.productlist.main.3.67553813sO2R1e&algo_pvid=8da8cb5b-21b4-4e62-a7d3-a8312a5d272a&utparam-url=scene%3Asearch%7Cquery_from%3A

For easy connecting ¼ Inch Bit Adapter + Connection (choose then the Motor Adapter high):

https://www.amazon.de/dp/B07RHBBP7T

and

https://www.amazon.de/dp/B07W987JGB

- Two additional cables are required to connect the DC socket to the motor controller. Ensure they are male-to-male (a length of 10-15 cm is sufficient):

https://de.aliexpress.com/item/1005005501503609.html?spm=a2g0o.productlist.main.1.56031ed0UsxhF6&algo_pvid=33d99155-e3ee-4255-8906-5702d2904bbe&utparam-url=scene%3Asearch%7Cquery_from%3A

-Screw set with M3 and M4 Screws (Philips Screw Form) (6 x M3*6; 4 x M3*10; 5 x M4*10)

https://www.amazon.com/Assortment-Stainless-Washers-Assorted-Machine/dp/B0BC24J6SS/ref=sr_1_3?sr=8-3

All further Print Instructions and CAD Pictures you can find in the Zip-file.

You can support me (paypal.me): @medalofhonor66

Just Enjoy the DIY Project of mine.
Highly inspired by Die Kaffeemacher