Make Red Dot Smaller

If you have made Upgrades and/or Modifications to your machine, let us know about them here.
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Cad Jones
Posts: 13
Joined: Mon Oct 12, 2020
Location: Houston, Texas
Country: USA
Nickname: Cad
Laser Machine Make or Type: Red/Blk 500x700 Ruida RDC6442G w/ Z-bed & Red-Dot
Laser Power: 80w
Laser Bed Size: 700x500 (28x20)
Home Position: TR
RDWorks Version: 8.01.48
Ruida Controller: RDC6442
Windows Version: 7 64bit
Accessories: Adjustable Z stepper bed
Want: Auto-Focus
Want: Laser / Red-Dot combiner
Want: Adjustable Lens for pass thru.
Want: Rotary
Need: New mirrors and lens.
Need: S&A 5200 Chiller

Hi, I've only had my laser a week, and didn't like the Comet Tail on the red dot blob (for lack of better explanation).

So I slid the Red Dot Pointer back up the hole until face was flush with bottom.
Took an index card stock, and kept pulsing laser holes in it a different Z to make different diameters. See pic.

Then I held index card flat against face of Red Dot assembly, moving to each dia. hole until I liked what I saw, which was about the 5th one down.

Burned a larger hole in some electrical tape, and cut the 5th hole out and attached to tape, adjusted on face of mount until happy, then looped split ends of tape up and over mount.

Pulse a tiny hole in the wood, then move new tiny Red Dot onto hole and lock it down. I did find that an open end 3/8" wrench over the round housing allowed me to move fwd and bk, while the swing arm was left and right.

Hope this helps someone else, took me about 10 mins.
Its an incredible difference when you block 90% of the Red Dot blob.
See before and after pics.

Cad
80w Blk/Red 5070 Ruida 6442G
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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.

So... you are using a mask to shape the red dot to a smaller dot?
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Cad Jones
Posts: 13
Joined: Mon Oct 12, 2020
Location: Houston, Texas
Country: USA
Nickname: Cad
Laser Machine Make or Type: Red/Blk 500x700 Ruida RDC6442G w/ Z-bed & Red-Dot
Laser Power: 80w
Laser Bed Size: 700x500 (28x20)
Home Position: TR
RDWorks Version: 8.01.48
Ruida Controller: RDC6442
Windows Version: 7 64bit
Accessories: Adjustable Z stepper bed
Want: Auto-Focus
Want: Laser / Red-Dot combiner
Want: Adjustable Lens for pass thru.
Want: Rotary
Need: New mirrors and lens.
Need: S&A 5200 Chiller

Bascially, yes, a pin prick (pulse) hole.
Don't think these red dots were designed to throw a dot 2 inches away.
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