Free CO2 Laser Mirrors

[avetek]

I read this a while ago with interest and I wondered if instead of a hole saw, it might be possible to waterjet cut them with a bit more accuracy and less clean up. Covering them with tape would protect them - I know it does add some cost but it just might be easier?
When you used these, did you get similar resulst to your normal mirrors?

[twehr]

You could use a water jet, but don't see the pint of spending the money for it.

Performance has been perfect.

[herby08]

thats absolutly correct I have my mirrors running a few hundred hours running and I even just have to wipe it a bit with a dry lense cleaning
whipe and no scratches.
greetings
walt

You could use a water jet, but don't see the pint of spending the money for it.

Performance has been perfect.

[rcpilot82]

This is awsome! Has anyone tried to cut them out on a mill? you could make them exact size then and use a better bit. Just thinking out loud here.

[jallitt]

Yes, milling them out works.

I just got hold of a used 80w cutter and the mirrors were in pretty bad shape so some googling led me here.

Found an old hard disc and I just cut 6 x 24.5mm diameter discs on a router with a 2mm ball end mill, 10000 rpm, 900mm/min, 0.33mm per pass, total depth 1mm deeper then the thickness of the platter. I stuck masking tape to protect the top and the disc platter was stuck to a sheet of acylic (with the protective film still on) with double sided tape. The cut discs popped off cleanly and have perfect edges. Obviously YMMV but laser is cutting much better now

[Waznot]

Gave this a go today, but cut them on the bandsaw roughly and sanded the edges with the linisher, 3 new mirrors in about 5 minutes once I got the case open. No #9 torx just drilled them out instead. Only wish we had a simple fix for tubes.