I guess you found out the hard way. That is one of things I did to my K40 immediately after I received it. the I spent may months reviewing K40 RU-vid Videos and asking questions of some of the video makers, before making my K40 purchase. I compiled a list of improvements, modifications, & upgrades that I would do to my K40, once it arrived, before I even turned it on, as I don't like surprises & problems down the road. My K40 is a beast now. I have never had a problem with it. I wish you the best on your K40 learning journey.
@@KLRform These are all the mods / upgrades that I have done to my K40: a) New Head with Air Assist b) New (better) Lens & Mirrors c) Red Dot Pointer d) Removed Exhaust Fan & added In-Line Fan e) Removed metal bed to enlarge workable area f) Adjustable Bed g) Vents on Front, to increase air flow h) Flow Gauge i) Safety Switch on Top j) Key Lock Switch, to lockout power to Laser k) DIY Water Chiller l) Additional LED Lights m) Switch to turn LED Lights ON/OFF n) Power Supply Cooling Fan o) Switches to turn ON/OFF: In-Line Fan, Air Assist, Water Chiller, Power Supply Cooling Fan p) Removed that metal air duct that was choking the suction q) Analog Milliamp Meter r) Lightburn Compatible Control Board s) Better quality Tubing for water circulation t) Check Valve, to prevent water from draining out of tube when Laser not used for a period of time I think that covers it all. If I remember anything else, I will let you know. As I said earlier, all mods / upgrades were made before I started using the K40.
Some tips for you. 1) Get the alignment tool from American Photonics save your self a ton of time. 2) If your gonna be doing heavy cutting jobs get a 4" lens if you ned to know why go watch American Photonics video on different lenses.
