What size of mirrors should I use on 130w co2 laser

Community Laser Talk
1

Hello everyone.

I have hard time choosing the right size of mirrors for my DIY CO2 130w laser.
Working are is 1500mm x 1000mm.
Right now I’m thinking about getting 30mm diameter mirrors.
Should I go with bigger mirrors?
Maybe 25mm is fine as well?

Should I buy laser head with water cooled lens?

This is all new for me and I can’t find much informations about this.
Thanks in advance for all answers and time.

2

If it means anything this 130W OmTech laser uses 25mm mirrors:
ZF3551-130 - 130w Co2 Laser Engraver Machine – OMTech Laser

What are your needs? How you work and what you’re trying to do would determine your equipment needs.

3

If you use your laser for “normal” purposes, a lens (and the mirrors) rated for at least 130 Watts is good enough. Water cooling of laser heads I have only seen on metalworking lasers and other industrial special lasers.

4

Thank you a lot. I think that Im going to order this:

https://www.aliexpress.com/item/1005005610719700.html?spm=a2g0o.store_pc_allItems_or_groupList.0.0.68271cfaNy803L&pdp_npi=4%40dis!EUR!€%20104%2C46!€%2068%2C94!!!110.40!72.86!%402103080e17094092664512160ef855!12000033742789201!sh!IT!2628070386!

25mm Si mirrors and 20m lens with FL50.8

5

I could not see the specification that their lenses can handle 130 Watts. It’s possible I missed it.
If you see Cloudray’s products, it is clearly stated which Watt strength they are rated for.