Umikot 51mm with Magnets

Non-Printed Parts Needed

• 4 M3 Threaded Inserts 
• 23 Magnets, 6x2 mm
• 4 3m Screws 12mm long
• 4 3m Washers
• 4 3x10x4mm Bearings 
• 4 O-Rings 1/8 x 3/64
• 10 0.35mm acupuncture needles
• 44 BB's
• Super Glue

You can see the model on TinkerCad

Print the “Top”, “Main Gear” and a “socket /cover” 

The bearings will be press fit into the “Top”

M3 Inserts go in the the large center hole I use my soldering iron to press them in.

then place all the BB's in the grove of the “Main Gear”

now place the “top over  the ”main gear and insert all 4 screws, including a washer and o-ring

Now you're ready for all the magnets and glue. place a small dap of glue before applying the magnets. The only part where the orientation of the magnets is the part where the main gear connects to the socket. As in the picture below all the yellow magnets are facing with the same polarity and the orange magnets have the same face but with the polity that attracts the yellow so that when they are together both faces attract each other

on the other side of the socket you will do the same process  I would try to keep all the magnets facing the same but this is not as important.

To add your needles go to @redfoxdude model as his instructions  are very detailed.

for reference I have 

51mm Espresso Bottomless

my basket is 24mm deep

5 smaller needles with 20mm handle and  24mm 10+(24-10)) needle

5 longer needles 20mm handle and 34mm (10+24) needle