[Gary123xyz]

If one is engraving and the cut depth is not deep enough, the user can increase laser intensity or decrease speed. Is there ever a good reason to decrease the speed? If you have either option, why would you want to wait longer for the job to finish?

[Litografa]

Because if tube (especially glass) work on their maximum power, it will work shorter time.

[Gary123xyz]

Is the quality of the engraving as good with higher laser power? In other words, is there quality benefit from slowing the speed?

[Tweakie]

Gary,

I cut a lot of acrylic and initially I had problems with poor edge quality. I noticed from videos posted on youtube that professionals were cutting acrylic very slowly (much slower than I was cutting it) and they were getting good results. I halved my feedrates and reduced the power setting accordingly and immediately started getting the quality edges that I required.
Although the power density may be the same between (high speed / high power) and (low speed / low power) the materials thermal transfer rate is a constant therefore, like all materials, there are ideal speeds and feeds for cutting and engraving.

Tweakie.

[Litografa]

Tweakie - what is brand and power of your laser? Could you post here file with this bycicles?

[Tweakie]

Litografa,

My machine is home built and quite a lot different from most - I run GCode.

Not sure if this will be any use to you but I have attached the bike file.

Tweakie.

[Litografa]

I can't use Gcode on our lasers :drowning:

Work is perfect - what is types of your drives (motors)?