"PDCA (Plan-Do-Check-Act)" is a typical management cycle.
Let's turn the PDCA with spinner!!
Movie:https://twitter.com/kirin_nico/status/867017017110310912https://twitter.com/kirin_nico/status/867395541864390657
Center hole:
22mm
For ball bearing "608"
Around holes:
22.6mm
For weights : Japanese 10…