# Laser scanning speed and power in Fuse 1

**URL:** <https://forum.formlabs.com/t/laser-scanning-speed-and-power-in-fuse-1/31805>\
**Category:** Fuse 1/1+\
**Created:** [August 24, 2021, 1:14am UTC](https://forum.formlabs.com/t/laser-scanning-speed-and-power-in-fuse-1/31805 "2021-08-24T01:14:55Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![vishalk](https://avatars.discourse-cdn.com/v4/letter/v/b9e5f3/32.png) [@vishalk](https://forum.formlabs.com/u/vishalk)\
**Post date:** [August 24, 2021, 1:14am UTC](https://forum.formlabs.com/t/laser-scanning-speed-and-power-in-fuse-1/31805/1 "2021-08-24T01:14:55Z")

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I can relate print speed (10 mm/hr) with print time using Fuse 1. But I am unable to understand laser power and scanning speed.

Few questions:

- I have found that for powder sintering power requirement is 140 mW to 250 mW, So how Fuse 1 manages to perform sintering with 10 W of laser power?

- At what scanning speed sintering has been done?

- Are power and scanning speed adjustable in Fuse1? If yes, how?

Thanks,  
Vishal

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**Author:** ![Jackson](https://sea1.discourse-cdn.com/flex025/user_avatar/forum.formlabs.com/jackson/32/17924_2.png) [@Jackson](https://forum.formlabs.com/u/Jackson)\
**Post date:** [August 28, 2021, 7:56pm UTC](https://forum.formlabs.com/t/laser-scanning-speed-and-power-in-fuse-1/31805/2 "2021-08-28T19:56:09Z")

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Hi @vishalk,

Great questions! Essentially, the sintering energy is a function of both speed and laser power, so we accomplish the correct amount for sintering by moving quickly.

Moreover, the Fuse 1 is a closed system, so most print settings are not adjustable. However, if you are ever experiencing issues printing with the default settings, [please let us know](https://support.formlabs.com/s/contact-support?language=en_US)! We’ll be happy to look into your specific issue further and find out what might be causing the problem.