# Self-made short nozzle on a lathe

**URL:** <https://community.fabcreator.com/t/self-made-short-nozzle-on-a-lathe/183>\
**Category:** FabKit\
**Created:** [3 May 2022 14:07 UTC](https://community.fabcreator.com/t/self-made-short-nozzle-on-a-lathe/183 "2022-05-03T14:07:06Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![MakerspaceHGW](https://community.fabcreator.com/user_avatar/community.fabcreator.com/makerspacehgw/32/183_2.png) [@MakerspaceHGW](https://community.fabcreator.com/u/MakerspaceHGW)\
**Post date:** [3 May 2022 14:07 UTC](https://community.fabcreator.com/t/self-made-short-nozzle-on-a-lathe/183/1 "2022-05-03T14:07:06Z")

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Hello there,

We got the latest Fabkit and had just 3 mm space (= focus) between the nozzle of the laser head and the workpiece.

So I went to the lathe and turned down a short nozzle from a piece of brass rod.

The thread is M24x1 and the angles are 108 degree (= angle of the drill bit). The outlet hole is 4 mm in diameter.

First i turned down to size, then drilled the inner hole, fiddled out the outer angle and turned the outer cone.

Here you can see the finished nozzle:

> **[@makerspacehgw](https://www.instagram.com/p/CcoMFD-ofDv)**

We now have a greater focal distance of 10,5 mm and do not crash into clamps and stuff. 🙂

On the down side we got more burning next to the cuts. With sanding afterwards or masking tape we get a better finish.

The next modification will be a better air compressor.  
The one the fabkit came with has at maximum 0,35 bar pressure and 20 L/min air flow, but is switchable simply by the rudia controller. Looking for some with at least twice the power (pressure & flow).

Still looking for fitting devices. Any recommendations?

Best regards  
Jonas from Makerspace Greifswald eV.

> **[Makerspace Greifswald](https://greifswald.space)**

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**Author:** ![CescoAiel](https://community.fabcreator.com/user_avatar/community.fabcreator.com/cescoaiel/32/24_2.png) [@CescoAiel](https://community.fabcreator.com/u/CescoAiel)\
**Post date:** [9 May 2022 20:46 UTC](https://community.fabcreator.com/t/self-made-short-nozzle-on-a-lathe/183/2 "2022-05-09T20:46:44Z")

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I use a normal low-noise workshop compressor (220l/m, 9.5Bar) that I already had, with a pressure control valve (set to approx 0.5 bar) and an electrical valve. When the ‘air assist’ is enabled, the valve opens, and the air flows. The compressor is in a separate shed, so I hardly hear it, and not only is the end result pleasantly quiet, but the air-flow can be controlled more precisely as well!