TechBravoTN

John brad and TechBravoTN are now friends 1 year, 10 months ago
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TechBravoTN started the topic Laser Lenses, Optics, and Focus in the forum Laser Basics 1 year, 11 months ago

This article covers a bit of laser theory as well as practical application of the optics systems in a typical CO2 laser. This is a beginner level article. There will be more advanced articles generated at a future time.

DISCLAIMER: Laser Engravers emit deadly high voltage and laser radiation capable of causing instant blindness and…[Read more]
TechBravoTN started the topic So You Want A Laser Engraver Eh? in the forum Laser Basics 1 year, 11 months ago

This article highlights my journey through different laser engravers and goes over some things to consider before deciding on a machine.

DISCLAIMER: Laser Engravers emit deadly high voltage and laser radiation capable of causing instant blindness and tissue damage. Lasers are a fire hazard. Keep extinguishers close and NEVER leave…[Read more]
TechBravoTN started the topic CO2 Laser Engraver Safety in the forum Everything laser safety 1 year, 11 months ago

This document covers some basic safety information on the processes of laser engraving.

DISCLAIMER: Laser Engravers emit deadly high voltage and laser radiation capable of causing instant blindness and tissue damage. Lasers are a fire hazard. Keep extinguishers close and NEVER leave the machine unattended. The lasing process caused…[Read more]
TechBravoTN started the topic The Beginners Guide To The K40 in the forum Laser Basics 1 year, 11 months ago

This is our down and dirty “cheat sheet” covering the in’s and out’s of the K40 Chinese lasers. This is a beginner level article. There are many other (possibly better) resources out there but we have compiled this data from actual experience and they have shown desirable results.

DISCLAIMER: Laser Engravers emit deadly high voltage and…[Read more]
TechBravoTN replied to the topic Properly Grounding a K40 in the forum Everything laser safety 1 year, 11 months ago

I can make a more detailed video but basically if you meter your chassis and power supply grounds to the ground lug (the round one) on the 3 prong plug on the machines power cord you are fairly safe. That said, the lids, covers, etc… may not have continuity to chassis ground due to paint, etc… I suppose some ground straps could be added to…[Read more]
TechBravoTN replied to the topic K40 Laser cutter stopped firing . . . in the forum Machine Setup/Troubleshooting 1 year, 11 months ago

It is an additional stand-alone power supply. I had to cut an acrylic base for it and mount it to the base using standoffs. Then I stuck it to the side of the chassis with 3M double sided tape. It has an input of 110vac line voltage that you can pull from one of the “sockets” in the back of the unit. and it outputs 24vdc. You may want to consider…[Read more]
TechBravoTN replied to the topic K40 Laser cutter stopped firing . . . in the forum Machine Setup/Troubleshooting 1 year, 11 months ago
LightObject has a solid reputation and is in CA. They have all sorts of parts. You may contact them for recommendations.

Check these links for more great info on the power supplies:
- https://www.everythinglasers.com/forums/topic/power-supply-info/
- https://www.everythinglasers.com/forums/topic/power-supply-info-from-dons-blog/
There is info…[Read more]
TechBravoTN replied to the topic K40 Laser cutter stopped firing . . . in the forum Machine Setup/Troubleshooting 1 year, 11 months ago

Hmmmm. My temp has run for extended times at 26 degrees with no issues and i max my unit out at 16ma as a rule. That doesn’t mean the tube did not fail but I have run mine under those conditions since I had it and it is still running strong.

There is some equipment on the internet to check flyback transformers (LOPT / FBT Testers). That may be…[Read more]
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TechBravoTN's profile was updated 1 year, 11 months ago

TechBravoTN

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