# @stem_antics on Instagram

- **Type:** Video
- **Original URL:** https://www.instagram.com/p/DX6-RkQAU9L
- **Gondola URL:** https://gondola.cc/posts/65199741-stem-antics-instagram
- **Thumbnail:** https://img.gondola.cc/tr:w-,h-,fo-auto/postThumbnails/8ede83ec77.jpg
- **Posted:** 2026-05-04T15:21:06.000+00:00
- **Account Owner:** Stem Antics (@stem_antics) — https://gondola.cc/stem_antics

## Caption

Industrial laser engraving is a subtractive manufacturing process that uses a highly focused beam of coherent light to remove material with extreme precision. In production environments, most systems use fiber or CO2 lasers, each optimized for different materials and wavelengths.

A fiber laser (typically ~1064 nm) is well-suited for metals like stainless steel, aluminum, brass, and titanium. It delivers high power density and excellent beam quality, enabling fine features and deep engraving with minimal heat-affected zones. CO2 lasers (~10.6 µm) interact strongly with organic materials and polymers, making them ideal for wood, acrylic, glass coatings, leather, and certain composites.

The process begins with a CAD or vector file that defines geometry. CAM software converts that geometry into toolpaths, controlling parameters like scan speed, hatch spacing, pulse frequency, and power. In pulsed operation, each pulse deposits energy that raises the local temperature above the material’s ablation threshold. Material is removed via vaporization or ejection of molten material, layer by layer. For marking (color change or surface oxidation), energy input is tuned below deep ablation to modify only the surface.

Key parameters that govern quality and throughput:

* Power (W): total energy delivery; higher power increases removal rate but risks thermal damage.
* Pulse duration (ns, ps, fs): shorter pulses reduce heat diffusion, improving edge sharpness and minimizing recast.
* Frequency (kHz–MHz): affects overlap between pulses and surface finish.
* Scan speed (mm/s) and hatch spacing (µm): control coverage, uniformity, and cycle time.
* Focus and spot size (µm): determines feature resolution; smaller spots yield finer detail but require tighter alignment.

Industrial systems often integrate galvanometer scanners for high-speed beam steering, achieving meters-per-second scan speeds. For deeper engravings, multi-pass strategies are used with optimized cooling intervals to prevent excessive heat buildup and microcracking.

#stem #stemantics #engineering #lasers #laserengraving

## Stats

- **Views:** 15,321
- **Likes:** 227
- **Shares:** 0
- **Comments:** 1

## Tags

engineering, stem, lasers, laserengraving, stemantics

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