Easy to Build Desk Top 3 Axis CNC Milling Machine

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V Plotter Design A V plotter is a minimalistic design which uses a pair of steppers, some string, and a pen head to create a plotter. These are sometimes made by students or technology sector employees as a way to avoid "real work". In this article, I dig into the math behind these machines, and also write a program to calculate the configuration of a V setup needed to produce a working device. Requirements What is the optimal configuration of control lines for an area to be plotted? Line Tension Calculation The below diagram shows a mass m suspended by two lines. To describe the horizontal forces along the X axis (in balance), we write: To describe the force m along the Y axis, caused by the weight of the plotter head assembly, we write: Solving these two equations in terms of tension, we get: and Note that the tension equations have denominators in common. Angle Length Cartesian Conversion Trigonometry tells us that: See Wikipedia article on atan2. Law of Cosines Solving for α (alpha) we get: Code Simulation

Pocket laser engraver. For the Arduino I started out writing my own software. But while searching for a good way to control movement from the serial port I stumbled upon something called "Grbl ". This is a g-code interpreter with lots of nifty functions. I have however changed the pin-out since then and here in the instructable I use the default pin-out of Grbl. Important: The current version of Grbl (0.6b) has a bug in the queue system. Any way you choose to do it you will end up with a .hex file that you must get into the Arduino. The Arduino needs to be set up for the job. Grbl 0.6b '\$' to dump current settings" If you enter \$ followed by return you will get a list of options. You must change the steps/mm for X and Y axis to 53.333 on both. Now you are ready for the computer setup.

MAS 863 - David Carr My final project is a 3-axis CNC milling machine that costs less than \$100 (currently \$87) to build. It can mill PCBs, wood, and even mild steel. These PCBs were milled using the machine. The traces are 10-15 mils. Some more test pieces: MDO and mild steel with a 1/32 inch mill on the left, wax with a 1/8 mill on the right. Design My design was heavily influnced by Johnathan Ward's MTM-AZ, although it shares no common parts with his machine. Machine drawings (DXF) Bill of materials Brute force stepper driver The brute force stepper driver is a simple 3 axis stepper driver for use with EMC2. Here are the files for milling the board: Bottom (PNG) Holes (PNG) Mill the first/bottom layer with a 1/64 inch mill first. Components MDO frame Y,Z axis gantry assembly Bed and X axis assembly Spindle assembly Stepper motor drive board PC control software Processes All of the machine's structure is MDO and is designed to be milled on the ShopBot. Schedule Over and out.

Cardboard Solar CNC test #3 above: 1 inch/minute, letters 7/16 inch tall, kerf < 0.024 inch First, this 3 axis CNC gantry system was built on a lark, out of cardboard and mostly salvaged parts. Building it kept me sane through late December - though how sane is it to build machine tools out of cardboard? It functions; which is something short of saying it works. Mounted to the z-axis is "the cutting tool", which is the real focus of this project. The familiar part of the cutting head is a lens to focus sunlight down to the smallest burning point we can achieve. I ordered a couple bare glass lenses from Anchor Optics. To get the sunlight to the lens, in a consistent downward orientation, we need the contraption above the lens. Look it up on Google and you'll find "Toto Coelo" an '80s band whose name would mean something like "all the heavens". My design still needs some hobby servos, or worm gear drives, to engage the geared rings visible in the photo. But I think it might work. Initial test results:

DiY. Homemade Router Laser CNC. In this page I will show you how I have build a Router Laser CNC using some part from old printers, a Epson Stylus 800 and another Epson Stylus Color II, (you can use your old printer). Aplications: Cutting Paper. To make stencils for painting with airbrush.Wood and Cardboard Engraving. Write and paint in wood whitout ink.Plastic Engraving. We can start obtaining the X axis from the old printer. We will not use the other parts, as control board, we need change it by another CNC control board with stepper drivers. I have mounted it in a wood base. General view of the device. Transmission system for Y axis. The first protortipe for the new CNC control board that controls 2 stepper motors and the power for the Laser Diode. In this video you can see a wood engraving test using the software EMC2 in Ubuntu 8.04. As I need refocus the laser each time I change the width of the material to engraing y have build Z axis for the Laser Diode, that let me change the focus high from the CNC software.

PCB Milling PCB Milling Release status: Concept One obvious goal of making a RepRap replicatable is getting it to make it's own PCBs or other electronic circuitries. PCB milling is one of the more promising ways of Automated Circuitry Making. Recent firmwares understand a pretty standard flavour of GCode, opening the door to a lot of toolpaths already existing. This page describes a few promising ones. Researchers have already milled out functional PCBs on the WolfStrap. (Should these be moved to Useful Software Packages ?) While a gazillion of softwares for creating and manufacturing circuits and PCBs exists, it was surprisingly difficult to find a working combination. All applications described claim to run on all major OSs: Linux, Windows, Mac OS X. gEDA gEDA is a software suite with schematic and PCB layout editor. Installation on Linux You want at least gschem, pcb and xgsch2pcb. sudo apt-get install geda geda-utils geda-xgsch2pcb ... or install from source: Installation on Windows Quickstart gerbv .

Downloads « DIYLILCNC Downloads Detailed instruction sets covering every step of our build, from parts lists to assembly and Linux setup; digital source files used for laser-cut/CNC fabrication. Creative Commons License Info The plans and source files for this project are released under a Creative Commons Attribution Share-Alike license. This license is often compared to open source software licenses. Community Sandbox We’ll be using this section to publish modified files that relate to the DIYLILCNC. These files have not been reviewed in any way. These files have been reviewed visually but not tested. These files have been cut and tested by a forum member. Solidworks 2009 Credit: Jacques Favreau.