Tag - K40 laser cutter

K40 laser cutter power supply

Most problems with the K40 laser cutter involves the power supply in one way or another. Here is the facts about the laser power supply installed in most K40 machines. Introduction The K40 is a product made with parts to make a small and cheap laser machine. It is not developed or manufactured like this - it´s just the cheapest parts and solutions put in to a metal box. Now when we talk about the Laser Power Supply it is actually not made to...

Buyers guide to the Chinese K40 laser cutter

This article is aimed to you looking to buy a K40 laser cutter 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. 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 similar combinations. They are all the same, more important to...

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. Lens setup calculator Check out...

Troubleshooting a “no fire” issue

A new article about troubleshooting a no-fire issue is published here. Quick troubleshooting when the machine is not firing the laser any more. To begin with, make sure all wires and connections are good in the machine and make sure all cables are where they should be. Read up on the grounding-article here 1: Start the machine Does the machine home to top left position? if it does - go to #2 If it does not move - check fuses in the back of the...

Install a mA-meter on your K40 laser

Adding a mA-meter to your machine is one of the most important modifications you can do on this machine. The mA-meter will read the power trough your laser tube allowing you to set the power to a safe value to prevent the laser tube from over powering and thus saving the life span of the laser tube. Read more here about the most common reasons why your laser tube dies. Tools needed - Wire stripper, cutter and crimp tool. - Pliers or small wrench...

Upgrade your analog power knob

This is a upgrade of the analog power potentiometer to give you better control over the power level. It´s also easier to remember a number than a location of the pot. You can buy this from me prebuilt, ready to connect to your machine here. Or follow this guide to make your own! If you want to convert your digital K40 to analog with this solution - check out this conversion article. https://www.youtube.com/watch?v=PnDlF1QEebI Tools you need - Soldering iron and solder - Wire stripper and cutter Parts...

Upgrades & improvements on the K40 laser cutter engraver

The K40 machine is a awesome little product who makes it easy for hobby and semi-pro use to get going with laser cutting or engraving. It´s far from perfect and needs a hand to work as you intended. First reading should be the article about checking your machine - read it here. Water cooling Coolant tank Depending on where you live, it might be a good option to have a bigger tank 15-25L or more. If you live in a hot climate, you need a...

How it works: Exhaust in your laser machine

This is a hot topic on many Facebook groups and forums, where people quickly suggests links and details of what they bought and how good it works. But very few of these people actually know why it works good, and if it will work good for the reader. To start off this article - you do not need a big fan to have a good exhaust. What a big fan does is complementing the problems with the machine and exhaust setup, but...

Mirror alignment – no more sweat and tears – Updated!

This is the old alignment guide - check out the new guide here! Mirror alignment is the action many of us fear the most, looking at videos and reading guides and after two weeks your mirrors are still not aligned. Many of the guides and how to´s forget the most important part of aligning, that the pieces you try to align actually are aligned themselves. I have therefore made this guide in three parts, with three steps in each part., how you...