Supersonic Air Assist

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Frank Small
Posts: 68
Joined: Sun Mar 24, 2019 4:12 pm
Location: Bennington, Vermont
Country: USA
Laser Machine Make or Type: 50W China Blue upgraded to Reci 75W tube
Laser Power: 75
Laser Bed Size: 500x300
Home Position: TL
Control Software: LIGHTBURN
RDWorks Version: RDW v8.01.18
Ruida Controller: Other
Accessories: Ruida Controller R644XG
Rotary fixture
Windows Version: Win 10

Re: Supersonic Air Assist

Post by Frank Small »

Charles

The hex driver of the “gold” tapered drill set is 1/4” so if you compare it to the rest of the picture they are pretty big. The smallest one is probably 1/8” to 1/2” or so.

Maybe cut the taper you want on a piece of steel rod “positive” and use it a a reamer in a drilled hole in the aluminum blank with valve grinding compound.

Actually look at MSC OR McMaster for tapered reamers. Where I use to work we had some small tapered steel pins for making fixtures. I bet there was a reamer for them.

Frank
Eleven months of the year I’m an old fat guy but in December I’m a rock star, aka Santa
Charles Jones
Posts: 20
Joined: Sat Jul 18, 2020 3:56 pm
Location: Meridian, Mississippi
Country: United States
Laser Machine Make or Type: GWeike LC1390N & LC1530D
Laser Power: 100W
Laser Bed Size: 1300x900 & 3050x1525
Home Position: TR
Control Software: RDWORKS
RDWorks Version: 8.01.10
Ruida Controller: RDC6442
Accessories: Rotary Chuck, Rotary Spindle, Custom Aluminum Flatness Table for Sheet Goods, Custom Vacuum Flatness Table for Thin Sheet Goods.
Windows Version: 10

Re: Supersonic Air Assist

Post by Charles Jones »

McMaster had a tapered end mill. Perfect for this application. 2mm diameter on the tip and 10 degrees taper.
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Gweike LC1390N (1300x900mm) & LC1530D (3050x1525mm)
RECI W6 130 watt
RDWorks
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Gene Uselman
Posts: 1976
Joined: Thu Jul 07, 2016 3:18 pm
Location: Suburban Minneapolis, Minnesota, US
Country: USA
Nickname: Gene
Laser Machine Make or Type: AKL1318-2
Laser Power: 130W & 80W Reci
Laser Bed Size: 51 x 71
Home Position: TR
Control Software: LIGHTBURN
RDWorks Version: RDw .19 & Lightburn
Ruida Controller: RDC6445
Accessories: I have a combining lenses, pin tables [homebuilt], honeycomb tables , wireless remote, Modifed Ultimate Air Assist, home built non-powered rotary device, Prusa i3 MK3S and Mini Prusa printers.
Windows Version: Win 10 Pro

Re: Supersonic Air Assist

Post by Gene Uselman »

I don't know if you have seen this- LightObject apparently designed and sells them. This would be for engraving of course but it is an interesting idea.
And it could be easily enough constructed to try it?

https://www.youtube.com/watch?v=CKZeiFjFpT4
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BT48 Alpha Shopbot and 1300x1800 130W Laser

The days that I keep my gratitude higher than
my expectations, Well, I have really good days.

Ray Wylie Hubbard
Charles Jones
Posts: 20
Joined: Sat Jul 18, 2020 3:56 pm
Location: Meridian, Mississippi
Country: United States
Laser Machine Make or Type: GWeike LC1390N & LC1530D
Laser Power: 100W
Laser Bed Size: 1300x900 & 3050x1525
Home Position: TR
Control Software: RDWORKS
RDWorks Version: 8.01.10
Ruida Controller: RDC6442
Accessories: Rotary Chuck, Rotary Spindle, Custom Aluminum Flatness Table for Sheet Goods, Custom Vacuum Flatness Table for Thin Sheet Goods.
Windows Version: 10

Re: Supersonic Air Assist

Post by Charles Jones »

Correct me if I'm wrong, but we generally want a tiny bit of pressure combined with strong cross flow to remove fumes while engraving OR we want very strong high pressure flow for cutting.

I feel like the true ultimate air assist would redirect flow between a high speed nozzle coaxial with the beam for cutting, and a nozzle like you sent in the video for engraving.
Gweike LC1390N (1300x900mm) & LC1530D (3050x1525mm)
RECI W6 130 watt
RDWorks
User avatar
Gene Uselman
Posts: 1976
Joined: Thu Jul 07, 2016 3:18 pm
Location: Suburban Minneapolis, Minnesota, US
Country: USA
Nickname: Gene
Laser Machine Make or Type: AKL1318-2
Laser Power: 130W & 80W Reci
Laser Bed Size: 51 x 71
Home Position: TR
Control Software: LIGHTBURN
RDWorks Version: RDw .19 & Lightburn
Ruida Controller: RDC6445
Accessories: I have a combining lenses, pin tables [homebuilt], honeycomb tables , wireless remote, Modifed Ultimate Air Assist, home built non-powered rotary device, Prusa i3 MK3S and Mini Prusa printers.
Windows Version: Win 10 Pro

Re: Supersonic Air Assist

Post by Gene Uselman »

You are correct- the low pressure while engraving is to prevent backwash on the lens- otherwise the more cross flow the better. I have 3 high velocity
2.5" fans on magnetic mounts that can be positioned as needed as well as a twin 6 inch automotive fans that are individually gimbal mounted for more serious airflow modification on an Exh Aux switch. Airflow on a large bed is complicated.
If the Help and advice you received here was of VALUE...
Please consider making a donation to maintain the RDWORKSLAB Forum.

BT48 Alpha Shopbot and 1300x1800 130W Laser

The days that I keep my gratitude higher than
my expectations, Well, I have really good days.

Ray Wylie Hubbard
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