Hi guys.

I'm building CO2 laser around 45W. I have all the component selected except laser tube. I could fir 100cm tube in my design but I would like to start with 80-85cm tube for a few months.
I'll be cutting max 5mm plyboard and 5mm acrylic.

My DIY design:




I'm trying to decide between this two:
Cloudray (noname) CR45:
https://www.cloudraylaser.com/collec...12892224421939

And

Tongli TLC800-50
https://www.cloudraylaser.com/collec...12816485711923

I really appritiate any constructive comments and suggestions.

BR,
Frenky