Take your engraving business to the next level, 12pcs/Lot K40 Part Head Mount Carriage Wheel Rollers Set Laser Engraver For CO2 Mini Laser Stamp Engraving Cutting Machine, Image To Vector Crystal Ball Pro – Photoshop Script, Orion Motor Tech 50W CNC Laser Engraving Machine, Permanent Glossy Black Vinyl Sheets Better Than Vinyl Rolls – EZ Craft USA – 12″ x 12″ – 40 Glossy Adhesive Backed Sheets Work with Cricut and Other Cutters, Python Airline Tubing for Aquarium, 25-Feet, 3 mm 1/8″ X 12″ X 12″ Premium Baltic Birch Plywood – B/BB Grade – Flat Sheets by Woodpeckers, CO2 Laser Safety Eyewear Co2/Excimer Filter Black Plastic Wrap-Around Frame, Aluminum Honeycomb Grid Core, 1/4″ Cell, 10″x12″x .250″, Penn Plax Airline Tubing for Aquariums –Clear and Flexible Resists Kinking, 25 Feet Standard, CNCOLETECH CVD II-VI ZnSe Focus Lens Dia:18mm 19mm 20mm FL:38.1mm/1.5″ for CO2 Laser Engraving Cutting Engraver/Cutter 40W-200W. It might be the cause of killing the tube for you. Here is a layout that will give you a good ground connection. 2) You’re standing on the earth, so your feet are somewhat connected to the earth. But if I read this right, you do NOT need to run a wire to an external earth ground if you have a three-prong outlet, like we have here in the US, correct? The standard solution (in well-made equipment) is to prevent part 1 of the scenario. I positioned the cutter around 197x : 60y where it engraved just fine. The K40 can cut and engrave quite a few other things such as Linoleum for stamps and a lot of other things . Feb 12, 2019 - Dedicated to the inexpensive K40 Chinese hobby CO2 laser that are the most affordable lasers to get us all started. In China they do this because the grounding is external and not inside the cable from their wall outlets. + Update your shipping location 7 S 0 P O N S O A R P A 7 E E D-1-1 U J-1 0 F J-1-1. Fake CE markings, some call it “chinese export” and not the real Conformité Européenne, I have just installed a new K40 laser in my shed. This guide has some tips and hints regarding the popular K40 laser machine type, but this can be used for any laser machine on the market as the science behind a laser mirror alignment is the same on all of them. Read my article about Setting up your laser I can give the electrical safety theory behind this. my laser engraver JK-1390, stopped burning while running how can I solve this problem? New PSU, new tube. the gantry is okey. part 2 of a troubleshooting series. This is so helpful. The case is now just sitting there with a high voltage relative to the earth, waiting for you to touch it. Links to vendors, forums, groups or web pages related to small C02 lasers. Introduction. The K40 is a cheap laser engraver/cutter… The ground from the 3 prong connection swings over to the bolt. Save k40 laser to get e-mail alerts and updates on your eBay Feed. In other words, the ground wire forces the case to the same electrical potential as the earth (and you) so that touching the case won’t shock you. Article by Richard Grisafi. 10.10.2015 : fix attempt 4 ... Plus, now there is a new problem. 4: 4: CNC Zone Forum by Coherent Dec 4, 2015 5:20:41 GMT -7 The K40 comes with this spring loaded clamp deal that holds your workpiece in place by squeezing it on the sides. Looking at a laser while working on your projects can cause permanent eye damage if the source isn’t … Thanks. 90% of the errors in laser machines are not skewed or non-square gantrys, it´s bad alignment of the three … If you have a ground rod, use it. 40W K40 CO2 Laser Stamp Engraving Cutting Machine Laser Engraver Cutter USB ... K40 Laser Cutter Honeycomb Bed 320*220mm Co2 Laser 40W Engraver Machine Parts. But the laser power is off or simply a little pulse at the corner. Frustrating. Here is a picture how a good ground bolt is fastened to your machine. Thus, an electrical fault CAN’T charge the case to a high voltage relative to ground, because the case is connected directly to ground. Now there’s high voltage between your hand and your feet, causing a current to flow through your heart. Read the electric warning article i wrote a while back, in the FAQ menu. I see a loop back to the grounding. Store; Docs; Contact; K40 LASER Cutter. Both inside and outside. I purchased my Chinese laser cutter with the underwhelming M2 Nano mainboard. Just got one of these and was worried about the earth ground in manual. The gantry works well and there is power to the sight dot which is not good. À lot of the K40 machines i’ve seen have the CE mark on it meaning that it While this is true, the bolt still MUST be in good contact with metal case. Laser safety glasses / goggles for K40 laser cutter These Goggles have been specifically designed for use with Co2 laser engraving machines, including the k40 laser cutter. The problem is often the ground bolt in the back beeing isolated from the casing, this is where the ground from the wall outlet should have 100% contact with the metal. LEDs for 220volts, a lot of them can be simply touched on the 220v parts. There was paint on both sides and the bolt had plastic insulators on both sides of the case. Remove all plastic shit and remove paint and ground the machine case properly and it works great, no matter if you use the ground rod or a good wall outlet ground. I use two toothed/serrated washers closest to the metal. In China, the electric standard is not well built and many houses still do not have ground solutions in their house. Aligning the lasers on a K40 Laser Cutter This is one of the most time consuming parts and most frustrating when you first get the machine. The K40 style lasers all produce so much laser power that they’re in the most dangerous Class 4 category per the FDA’s rating scheme. 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