C-type vs. E-type vs. ?? type laser heads

Hardware settings, adjustments and fixes and other hardware discussion. This includes the "doHICky" Laser Power measurement system by Russ.
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Vinito Frankovich
Posts: 26
Joined: Wed Mar 10, 2021
Location: Kansas City
Country: United States
Laser Machine Make or Type: Chinese
Laser Power: 80W
Laser Bed Size: 28" x 20"
Home Position: TR
Control Software: RDWORKS
RDWorks Version: 8.01.52
Ruida Controller: RDC6442
Windows Version: 10
Accessories: Working on adding Z-axis motor. I'm new, so nothing else yet

Sorry if this has been answered before, but the search turned up nothing. This seems odd because it strikes me as something which would be a common question.

I am considering upgrading my laser head. So I go to the usual sources and I see C, E, K and G type heads. Are these to fit different power ranges or what? I can see at a glance that the K-type appear to be for the little desktop lasers, but the others all look similar on a catalog page and most dimensions look the same as well.

Anyways, it seems to me that there ought to be an easy-to-find help page describing the differences between the head types so a guy like me can read it to figure out what kind of head I might want to get. Matching the old one might be correct, but maybe not? I mean if I'm upgrading, how am I to know I might want a different type than what it came with? i.e. maybe I don't mind spending the money to upgrade the mirrors and lenses too if necessary and if it would aid in using the thing, I'd be up for that if I only knew what to consider.

So can someone describe the differences in laser head types or point to an existing page that has this description? I searched this too and came up empty.

Thanks for any help.

FYI - My machine is Chinese 80W with 700 x 500 bed, but not really looking for recommendations (though welcome) as much as the general knowledge. I mean I'll get whatever, but I'd really like to know why.
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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 wish I could explain this to you but it is not clear to me either. The K type I expect comes from the K40 machines built by a lot of Chicom companies. The larger size heads sometimes use a larger mirror to deal with the divergence of the larger machines [ and the substandard tubes being used] and some of the tubes are 24mm and some 25mm [as I recall, I am in the sunny Keys to avoid frostbite back home]. I now have a largish machine and it has a very large head that I have not seen before... If you figure anything out we can make a FAQ page for the info as it is a common question. Gene
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The days that I keep my gratitude higher than
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Ray Wylie Hubbard- unfortunately deceased
Vinito Frankovich
Posts: 26
Joined: Wed Mar 10, 2021
Location: Kansas City
Country: United States
Laser Machine Make or Type: Chinese
Laser Power: 80W
Laser Bed Size: 28" x 20"
Home Position: TR
Control Software: RDWORKS
RDWorks Version: 8.01.52
Ruida Controller: RDC6442
Windows Version: 10
Accessories: Working on adding Z-axis motor. I'm new, so nothing else yet

I think the only way I'm gonna learn any answers is to contact Cloudray or something. I can't find much of anything.
I'm a machinist so I could just laser a whole nuther head bracket from acrylic maybe and turn some tubes & nozzles I guess, just to spite the suppliers regarding the lack of schooling for jugheads like me.

I can find some things I could get to upgrade, but every time I look closer at my cheap machine, I keep finding more things about the whole optical train that makes me want to replace the whole smash if I buy anything at all. I mean I could stand to upgrade all brackets, head and tubes really. Some supplier is missing out on a decent sale so far.

I'm certain that a phone call to somewhere is likely to provide answers. It's just that I'm just the type who would like to do my own learning and bother them for as short as possible. I kinda like the learning part somewhat.

Anyway, long story longer... not much luck yet for me.
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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 am interested in Russ' last iteration of a [non]head- just a mirror and the lens tube held in position. It speaks to me.
If the Help and advice you received here was of VALUE...
Please consider making a donation to maintain the RDWORKSLAB Forum.



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

Ray Wylie Hubbard- unfortunately deceased
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