Will it shorten the lifetime of my laser tube if the power setting is at 100%?

THIS IS A MISCONCEPTION!

Perhaps you will feel that setting the laser tube at its power limit (power set to 100%) might bring negative consequences, especially in regards to the lifetime of laser tube. Indeed, for most industrial products this critical operation might shorten its service life. However, we have to realize one thing first - for a laser tube, outputting at a 100% level is not a kind of critical operation, too high of an unstable current is.

While the power supply of the laser tube is outputting a regular and stable current to the laser tube, no matter which power level you are using, it won’t affect the service time of the tube even if you set the power level at 100% in the driver.

Does the purity of air (Oxygen or Nitrogen) affect the cutting quality?

Based on internal testing, higher purity levels result in higher cutting quality. Downside to this is that the cost of higher purified air is more costly.
We suggest Oxygen purity of 99.8%(2N8) or higher.
The purity of Nitrogen should be 99.995% (4N5) or higher.

We have seen an increase in damaged machines due to the use of fake filters.

Purex Product Brochure for Fume Extractors 200 and 400

In response, we're releasing the design for a surgical face shield that is made entirely from clear plastic sheet material, that anyone can make quickly and in large quantities using a CNC router, laser cutter, or die-cutting/stamping process.

https://www.youtube.com/watch?v=-iuvqDkAIJk&feature=youtu.be

The only material necessary is 0.020" Clear Plastic Sheet.

The all-plastic face shield is made from two interlocking plastic parts cut from 0.020" thick clear plastic sheet material.

Once cut out, the face shields can be flat packed, boxed up and shipped out immediately. Hospital staff can then easily assemble on site as needed.

We believe this design provides the fastest and easiest way to create face shields, and helps to address at least one part of the current nationwide PPE shortage.

This design, created by InStore Design Display, as well as the alternates below, were developed in collaboration between hospital staff at the University of Kansas Health System, The Center for Design Research at the University of Kansas, InStore Design Display and Dimensional Innovations in Kansas City.

(View Original Page Here!)