second air line.

If you have made Upgrades and/or Modifications to your machine, let us know about them here.
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Radu Paunescu
Posts: 2
Joined: Thu Feb 14, 2019
Location: Bucharest
Country: Romania
Laser Machine Make or Type: Helios 100, RUIDA based
Laser Power: 100W
Laser Bed Size: 40x27
Home Position: TL
RDWorks Version: 8.1.33
Windows Version: Winows 10
Accessories: rotary engraving tool

My first mod: I added a second air line, so it blows some air even when engraving. This is to prevent gunk bulid-up on the lens when engraving.
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Gene Uselman
Posts: 2180
Joined: Thu Jul 07, 2016
Location: Suburban Minneapolis, Minnesota, US
Country: USA
Nickname: Gene
Laser Machine Make or Type: QC
Laser Power: 130W
Laser Bed Size: 900x1300
Home Position: TR
Control Software: LIGHTBURN
RDWorks Version: RDw .19 & Lightburn
LightBurn Version: Latest
Ruida Controller: RDC6442
Windows Version: Win 10 Pro
Accessories: I have a combining lenses, pin tables [homebuilt], honeycomb tables , wireless remote, Modifed Ultimate Air Assist, home built non-powered rotary device, PrusaMK4 and Mini Prusa printers.

You might want to look at Russ' Ultimate Air Assist on his Youtube channel, it is offered as a kit by Cloudray Laser [.com] with the schematics. It is a really elegant solution for cutting and engraving. Gene
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Radu Paunescu
Posts: 2
Joined: Thu Feb 14, 2019
Location: Bucharest
Country: Romania
Laser Machine Make or Type: Helios 100, RUIDA based
Laser Power: 100W
Laser Bed Size: 40x27
Home Position: TL
RDWorks Version: 8.1.33
Windows Version: Winows 10
Accessories: rotary engraving tool

Thank you for the suggestion.

To sum up Russ lengthily video: you need air assist for cutting, you don't need it for engraving. Having said that you want some air flow through the nozzle when engraving to keep the lens clean.
There is a switch in RDWorks which controls the air assist on/off.

My lase already has a solenoid valve controlled by the "if blowing" parameter. I only needed 10 $ worth of tubing and fittings to implement this mod.
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