I bought a plug and play kit from JTPhotonics.
The thing I am most proud of is the curtain that shields the entire work area and bystanders from the laser.
It bolts on to the totem corners and uses 1/2″ EMT for the rods.
The curtain is amber welding screen that I bought from ULINE
ULINE Orange Replacement Welding Screen
It was actually made by jtillman.com and has a great tech data sheet.
Thank you again for the fantastic design, your generosity in sharing it with us, and for the support of this entire community