Lens Tube Identification 60w Chinese Laser

Hardware settings, adjustments and fixes and other hardware discussion. This includes the "doHICky" Laser Power measurement system by Russ.
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Peter Brown
Posts: 8
Joined: Sun Apr 16, 2017
Location: USA, North Aurora, Illinois

I found that I believe to have a non standard laser head on my 60w 500x700mm unit. It has a 16.28mm(od) and a 11mm(id) with a 18mm lens that threads into the nozzle. I see most nozzles are 20mm(od). Should I purchase the 20mm replacement head and mirror assembly?
Red/Black LaserCutter 60W - I believe to be: K40-0750 Laser
500x700mm bed
Home position - rear/left
Windows Version 7 Pro
RDWorks Version V8.01.19
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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.

I doubt you will see any improvement on your machine, unless you are having particular problems with it.
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Peter Brown
Posts: 8
Joined: Sun Apr 16, 2017
Location: USA, North Aurora, Illinois

Thanks Gene,

Looking to add some longer focal length lenses for cutting foam and thicker plywood. I noticed my lens tube wasn't like most of the tubes on the web and was trying to find lenses that would work with my tube/nozzle.
Red/Black LaserCutter 60W - I believe to be: K40-0750 Laser
500x700mm bed
Home position - rear/left
Windows Version 7 Pro
RDWorks Version V8.01.19
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Dave Vigness
Posts: 526
Joined: Sun Dec 15, 2019
Location: Kansas City - Rural
Country: USA
Nickname: Dave
Laser Machine Make or Type: Chine Red and Black
Laser Power: EF RF2 80W
Laser Bed Size: 20 x 26
Home Position: TR
Control Software: RDWORKS
RDWorks Version: 8.01.54
Ruida Controller: RDC6445
Windows Version: 7
Accessories: Power Switch for air assist / exhaust blower, Ma meter with switch for external digital, dual digital temp gauge, LED lights under gantry and and and.

Pics and a list here. https://drive.google.com/drive/folders/ ... sp=sharing

You are not alone... but there is a solution!

I have the same problem, the OD of my lower tube is 16.75mm with the bottom 'top hat' holding a 18mm lens. I have yet to find any parts... BUT Good old Russ has a solution of course. He MAKES the adapter parts!

My machine shipped with a 2" lens, what I didn't know until trading pics with Russ was that it was also set up for engraving, not cutting. My FL gauge was over 19mm, tip to work surface.

He had a friend with the same problem, and made an adapter tube to hold other lens', in the correct position, for your head. I have a set coming that will let me use 1'5", 2", or 2.5" as needed. All staying with my original 18mm lens size just in case. He does not have this as part of his video series that I've seen, but he did send me a video with all the what and why.

Drop him and email the same way you do for the Dohicky, and he'll get back to you.
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