Thank you for the suggestion, but it must have been engraved previously with a laser.
A friend has been using a (relatively) cheap fiber laser to bleach black PETG-CF, with the result being pure white letters flush with the (undamaged) black background, similar to whatâs in your picture.
Getting that result depends on the laser wavelength and material, as well as the pulse power and scanning speed, so COâ / visible-light diode lasers cannot duplicate that result.
A near-IR laser head with a wavelength around 1 ”m might work, but I think the fiber laserâs very high peak power has a different effect on the dye.
Because the result depends on the actual plastic and dye, getting from where you are to where you want to be will require significant expense and experimentation. If you can find someone (or a business) with a fiber laser, perhaps you can work out a deal for some of those experiments.
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Thank you all for your advice and tips. I just found out that the previous housings, as I wrote âednisleyâ, were made on a fiber laser.
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