No Products in the Cart
Add lens tissue: $8.55 5% off with this part
Powder-Free Anti-Static Finger Cots for Handl...: Pack of three molybdenum (Mo) reflective mirrors for CO2 laser engravers and cutters, each 25 mm in diameter and 3 mm thick. A CO2 machine uses three of them to carry the beam from the tube to the head: the first sits at the tube end, the second on the gantry and the third in the head above the focus lens.
Molybdenum mirrors are solid metal, polished flat with no coating, and reflect about 94% or more of the 10.6 µm beam. Because there is no coating to scratch or burn off, they put up with frequent cleaning, smoke and dust better than coated mirrors. Gold coated silicon reflects a few percent more; molybdenum is the tougher choice for dusty shops and machines that need their mirrors wiped often.
Check the diameter (25 mm) and thickness (3 mm) of the mirrors in your mounts before ordering, and realign the beam after fitting.
| Part type | Reflective (beam delivery) mirror for CO2 lasers |
| Material | Molybdenum (Mo), polished |
| Coating | None (solid metal reflective face) |
| Diameter | 25 mm (1 in) |
| Thickness | 3 mm |
| Wavelength | 10.6 µm (CO2 laser) |
| Reflectivity | About 94% or more at 10.6 µm |
| Sold as | Pack of 3 mirrors |
| Country of Manufacture | China |
CO2 laser mirror mounts that hold a 25 mm x 3 mm mirror
Measure the old mirror: it must be 25 mm across and 3 mm thick to sit flat in the mount. Other size in this range: 20 mm x 3 mm.
| Dimensions | Part No.(SPM Part No.) |
|---|---|
| 25 mm diameter, 3 mm thick | Standard size(SPM-CO2-1020) |
Matching your machine
25 mm mirrors are the usual size on larger flatbed cutters (80 to 150 W) and on C type and E type heads, where the wider face gives more room for a beam that has spread over a long gantry.
Dusty or smoky work
Cutting MDF, leather or rubber puts a lot of residue on the beam path. A molybdenum mirror can be wiped as often as needed without wearing through a coating.
Replacing a damaged mirror
A mirror hit by a misaligned beam or left dirty can pit or scorch. Replacing all three keeps the beam path even.
A full spare set
Three mirrors in one pack let you replace the whole beam path at once, or keep spares in the drawer so a damaged mirror costs minutes, not days.
We check what other aftermarket sellers charge for this same part. Their prices on the date we checked:
| Seller | Price | Checked |
|---|---|---|
| OMTech (Wood Art Supply) (pack of 3) | USD 27.99 | 21 Oct 2026 |
| OMTech (pack of 3) | USD 31.99 | 21 Oct 2026 |
| CNCOLETECH (Wood Art Supply) (pack of 3) | USD 33.99 | 21 Oct 2026 |
| Spare Part Mart (pack of 3) | USD 22.39 | Today |
Our price of USD 22.39 is 20% to 34% less than these sellers.
Found this part cheaper somewhere else? Send us the listing and we will beat it by 5% under our Price Beat Guarantee. Every order is also covered by our 30 day money back guarantee.
Take one mirror out of its mount and measure it. These are 25 mm in diameter and 3 mm thick. Most engravers use 20 mm or 25 mm mirrors; the size is often listed in the machine manual.
Gold coated silicon reflects slightly more of the beam. Molybdenum has no coating, so it tolerates hard cleaning and dirty air much better. Many shops use molybdenum in the first two positions where dust collects.
The polished, mirror smooth face goes toward the beam. The back is left plain.
Yes. Swapping a mirror can shift the beam slightly. Check alignment with a test pulse on tape at each mirror, starting from the first, before running a job.
No. These are aftermarket molybdenum mirrors made to the standard sizes used on most CO2 engravers and cutters.
Wipe the face with lens tissue and optical grade alcohol or acetone. Molybdenum is hard, but avoid abrasive cloths and never touch the face with bare fingers.
Prices depend on your ZIP or postcode.
Live rates for the quantity selected, delivered to your door. Confirmed at checkout.
Join and we put 200 points on your account, worth $10 off an order over $75 USD. Then a point for every dollar you spend after that. Turn points into a discount whenever you like.
Opens the Marty Mates panel. No password: you enter your email, we send a code, and that is you in with your 200 points waiting. Joining signs you up to our emails and you can leave any time from the link in any of them. See our terms and conditions.
Member deals, specials before they go public, and easy ways to stack up points. Plus a nudge when a part you bought is due, so you are not caught out mid job.
You can leave any time from the link in any email we send. See our terms and conditions.
We will only bother you when it is worth it: a member deal, a specials drop, a way to earn points faster, or a heads up that a part you bought is due.
Join Marty Mates and we put 200 points on your account, worth $10 off an order over $75 USD. Then a point for every dollar you spend after that.
No password: you enter your email, we send a code, and that is you in.
