FAQ & how-to on your K40 laser machine

More Potentiometer kits in the making

At the k40laser.se HQ, which is now at my home (more about that in another article) i occupied the kitchen table. The most sold product if we don´t count optics, is the potentiometer upgrade kit. This is on the table tonight 20 kits to be soldered tonight. Last week with the store closed, the new opening is near and i´m aiming to have a clean support inbox and clean papers on pre-orders this week! Fingers crossed! This blog post is more of a "what´s [...]

K40 machine stops before job is done – fixes and issues

A lot of questions lately has been around machines stopping mid job, before the end or right away when starting a job. This is a issue no matter of your setup, controller type and/or other solutions. I will go through most common issues with communication for this problems in this article. 1: USB cable and setup - Most users have a laptop connected to their machine. Make sure all power saving programs/schemes are set to off. See guide here - If you are using [...]

K40laser.se laser parts store closing for two weeks middle of January

The parts store of K40laser was from the beginning something i made on my spare time on evenings with 5-6 orders per week. Today we are up to 50-60 orders per week and having a hard time with logistics, actual space in our shop and time to effective handling of orders and support questions. I need to get back to zero, bring up the stock and make physical arrangements in all our parts and see what we really have in stock [...]

No fire troubleshooting

This guide will help you identify and solve most problems with your laser machine not firing the laser beam. Make sure your K40 turns on and homes to zero position. If it doesn´t, check the fuse in the rear power connector before continuing. Step 1 Turn on your machine. Open the lid on your panel and push the test-button located on your power supply Yes, the laser is firing This is good, your PSU and laser tube is healthy and working. Go to Step 2 Yes, but only [...]

CW3000 cooler for lasers – Warning!

This is a very short article, i see posts about this CW3000 almost every day and i sadly see a lot of users buying it. The CW3000 is not a cooler - it´s a radiator and a fan with a small water tank. How it works The water is circulated by the CW3000 through the heat exhanger (radiator) and a fan is blowing on it to remove the heat. Sounds simple, it´s not. Your ambient temperature will be cooling the water you have. If [...]

Store and support update and information

November was a really bad month for us. In a good way we increased orders from 50 per month to over 500 expedited orders in 45 days. This put a lot of strain on me as a single company operator, aswell as keeping everything organized and follow up on support requests. A few of you have probably experienced slow or even no arrival of orders within this time and i am truly sorry for this and have been working day and [...]

Buyers guide to the Chinese K40 laser

This article is aimed to you looking to buy a K40 laser machine, but want more information before you decide yourself to buy one or not. Read this article, and check out all other articles about the k40 to get more information about this family of machines. Feel free to join the Facebook group if you have further questions. The machine Different types of K40 cases The K40 is often blue and white, but comes in a variation of colors, black-red, red-white, orange-black and [...]

Warning for new machine owners – grounding issues

This is a short warning with information how to solve the issue. More and more machines are delivered with deadly configuration on the grounding of the electronics. In China, the electric standard is not well built and many houses still do not have ground solutions in their house. So the machines are built by their standard, when we in EU or US or other parts of the world often have a good ground setup already in our homes since many years. If [...]

Mirror alignment – the ultimate guide

Welcome to the ultimate alignment guide for your laser machine. This guide has some tips and hints regarding the popular K40 machine type, but this can be used for any laser machine on the market as the science behind movement of a laser beam is the same on all of them. 90% of the errors in laser machines are not skewed or non-square gantrys, it´s bad alignment of the three mirrors in the machine not lining up with each other. Some of [...]

Setting the proper focus in your K40

Focus is very important for your work, if you are out of focus you will lose power or get strange effects when engraving. This is the most common issue with new users on the k40 machine, the information from the seller how to use the k40 is very limited so this information is not there and a new user tend to search for other problems causing it, when it´s actually the bed and focal distance doing it. So, what is focus? You [...]


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