Reddit reviews 10 Bearing 608ZZ Shielded 8x22x7 Miniature Ball Bearings VXB Brand

I just went to Amazon.

I got these various bits and bobs:

608 Bearings (about 50 cents a peice)
M2 screws + nuts
M3 Screws + nuts
Got those in, saw that they were philips
Ordered some M2+3 screws + nuts that were hex
Washers came with most of those sets
Some springs, compression and otherwise
Steel ball bearings (I actually don't know what I'm going to do with this)
Nylon Lock Nut set

Might run ya 30-40 bucks but you got a few ways to put things together.

Edit: Some links to get you started

M2 Screws
https://www.amazon.com/gp/product/B01J7NM9JA/ref=oh_aui_detailpage_o03_s00?ie=UTF8&psc=1 - $15

M3 Screws
https://www.amazon.com/gp/product/B01J7IUBG8/ref=oh_aui_detailpage_o03_s00?ie=UTF8&psc=1 - $15

608 Bearings
https://www.amazon.com/gp/product/B002BBICBK/ref=oh_aui_detailpage_o03_s01?ie=UTF8&psc=1 - $6

Nylon nuts
https://www.amazon.com/gp/product/B000K7M37G/ref=oh_aui_detailpage_o03_s01?ie=UTF8&psc=1 - $10

Springs
https://www.amazon.com/gp/product/B000K7M36W/ref=oh_aui_detailpage_o03_s01?ie=UTF8&psc=1 - - $8

I'll just this here, you'll be finding it helpful: http://www.amazon.com/gp/product/B002BBICBK/

It's pretty easy to make your own "kit" if you have the BOM and access to Amazon or a site like it. I'm biased because I've always gotten good service from them. Some people have said that I'm biased because they pay me, but I really do try not to recommend places of business that I don't frequent myself.

Anyhow, here are the x upgrade and the y upgrade that I was looking at when I went searching.

Both use 608 bearings and a 10 pack should take care of it and give you several spares for further upgrades or replacements in the future. (want a spool coaster?)

Next you need the GT2 belt and 2 pulleys. Done.

The BOM doesn't say it, but you might need some m3 screws

Edit: Full disclosure: Amazon pays me something like 4% on items that aren't sold by third parties. If everything on this list qualifies and you buy it all I expect to make about a dollar.

These are the cheapest to experiment that I could find (and mentioned in my last post). I would suggest removing the un-removable shields with a knife to make them spin longer. The same company has some ceramic bearings I am messing with that are about 10+ bucks each.