Simpson Simpson Release status: Kinda Working Disclaimer: This printer is very precise but not the most accurate. There isn't a full featured firmware that will let you do bed leveling and autocalibration. Simpson refers to a whole category of 3D robots. Typical Characteristics No spherical joints Delta arrangement High level of symmetry Minimizes number of components As a new category of printers it will be awhile until we know exactly what is and what isn't a Simpson. Family Videos Early Prototype First THOR Simpson Print Ever Bed Leveling for the Win First GUS Simpson Print First Moves of LISA Simpson Solidus Labs Dogleg grounded delta robot (GDR) 3D Printer Future Developments Six Arm Simpson: A 6 DOF robot. Links RepRap Development Forum "Grounded Experimental Delta Printer" TRap Adafruit: "3D @ World Maker Faire: RepRap Wally, Simpson, and Morgan!
JST connector Kit (2.54mm) - Amazon.com Giant 3D printer could build homes in under a day Scientists in California say new technology will soon allow massive 3D printers to build entire multi-level houses in under a day. University of Southern California Professor Behrokh Khoshnevis has for years been working on a building printing technology called “contour crafting,” and has earned accolades from the likes of the National Inventors Hall of Fame and even NASA for his efforts. Soon, he says, he’ll be able to use that system to create entire structures out of concrete using what is essentially a gigantic 3D printer. Just as basic hobbyist models let designers create three-dimensional objects from bottom to top, Khoshnevis says contour crafting is working on bringing that technology to the realm of urban construction. It is "basically scaling up 3D printing to the scale of building," Khoshnevis told MSN recently. Everything is being made automatically nowadays, the professor told reporters, from shoes and clothes to home appliances and automobiles.
Arduino Controlled CNC / 3D Printer Hybrid Repetier or Marlin Firmware for Arduino Mega implement G2 an G3 circular interpolation so they are good to use for CNC and 3D Printing. However they have limitations regarding pure CNC instructions such as pecking an other GCode's. Download and install Arduino IDE Here: Download and Repetier Firmware here: Configuring the Repetier Firmware for CNC functionality: After installing Arduino IDE, open it and use it to open the Repetier Firmware you have just download (repetier.ino file). - Arduino IDE Tools Tab: SelectBoard -Arduino Megra 2560 or MEGA ADK - Navigate to the Configuration.h file and alter the following lines: #define NUM_EXTRUDER 0 #define MOTHERBOARD 33 #define XAXIS_STEPS_PER_MM 128 #define YAXIS_STEPS_PER_MM 128 #define ZAXIS_STEPS_PER_MM 2560 #define HAVE_HEATED_BED false #define ENDSTOP_PULLUP_X_MIN false #define ENDSTOP_PULLUP_Y_MIN false #define ENDSTOP_PULLUP_Z_MIN false #define ENDSTOP_PULLUP_X_MAX false
A Core-XY Implementation A Core-XY Implementation A brief discussion on overcoming drawbacks in an H-Bot design Introduction After machining an H-Bot, I discovered an inherent issue involved in moving the platform about a two-dimensional space. In what follows, I'll discuss the drawbacks of the H-bot design and then discuss how the Core-XY overcomes these drawbacks. I'll then finish up with my implementation. The Motivation Drawbacks of the Hbot The H-bot design is straighforward, clean, elegant; yet it has an inherent design issue that can throw the precision motion out of spec for all but the few H-bots made under very tight tolerances. Suppose we'd like to move the platform in the +x direction. However, this motion occurs under the assumption that the moving axis is perfectly rigid, an assumption that doesn't make sense in the real world. Taking the moving axis as a whole, we can see that the two belt tensions exhibit a net torque about the moving axis' center of mass. The Core-XY Implementation: Pulleys:
PTFE For a list of PTFE tubing suppliers see --> Bowden. PTFE, also known under the brand name Teflon, has the lowest coefficient of friction of any known solid material and melts between 260°C and 327°C. It's fairly hard and fairly stiff too, so it's ideal for RepRap parts including things low friction bushings to main assembly parts. Thermoplastics often swell just before they melt, so PTFE tube inserts are used in many extruder hot ends so that the swelled plastic slides on this insert, instead of wedging itself in, preventing extrusion. PEEK tubing can also be used for this purpose. PTFE is used in lubricants, and PTFE-filled oil is highly recommended by many in the community as being the best all-round low friction and inert lubricant for RepRap machines. Despite it's relatively low melting temperature, "liquid" PTFE is much more of a thick gel than a true liquid. Properties from boedeker-infopage. Availability PTFE rods suitable for RepRap extruders can be purchased from: Plastock.co.uk
How to Make a Three Axis CNC Machine (Cheaply and Easily) A salute to those who have laboured through to this point (and to demonstrate that it is reproducable) Here are some pictures of other peoples machines. Photo 1 - Chris and his friend put together this unit; laser cutting the parts out of half inch acrylic. Not only does it look super it must weigh a ton. Photo 2 - Sam McCaskill has finished his desktop CNC machine and it's looking really really nice. Photo 3 - Angry Monk's - With MDF pieces cut on a laser cutter and drive converted from toothed belts to threaded rod Photo 4 - Bret Golab's - Bret has completed his and gone through the extra step of getting it setup to work with Linux CNC (a task I attempted and was foiled by complexity). (If you have built one and would like it featured here, please send me a PM and we can arrange for the sending of photos)
HBot using fishing line crispy1 Wrote: ------------------------------------------------------- > That case looks great! How long did it take to > print? about 7 hours/corner piece, and an hour for the connectors. Everything is 3 perimeters, 3 solid layers and 33% hexagonal infill sliced in KisSlicer. The first corner actually took closer to 12 hours to print because I printed from computer and not SD card, and the hexagonal infill caused continuous pausing. > Your belt path is interesting, is there a reason > you chose to mount the motors out of plane with > the belt path? two reasons, I wanted the drive motor outside of the critical portion of the belt path, because then the pulley doesn't have to align with anything and it's size isn't important, it means I can easily swap between belts of various sizes, and the positioning allows for wrapping fishing line in the opposite direction. I would flip the moving axis over if I we're redesigning it, which I might.
Write a tune, get it 3D-printed with Music Drop | Crave - CNET Music Drop is a new service that lets you compose a little 16-note tune and have it immortalised in the form of a 3D-printed music box. (Credit: Left Field Labs) Even though they only allow simple tunes, there's something rather fascinating about music boxes, turning the handle and watching the pin-and-comb mechanism produce its clear, chiming notes, like a tiny piano. They're not new — the first music boxes started arriving towards the latter half of the 18th century — but a company called Left Field Labs has offered a modern — and personal — twist. A new project called Music Drops asks you to compose your own 16-note tune using a grid. Then the company converts the music to a 3D-printable file using WebGL, and you can order a 3D-printed, drop-shaped music box that plays your tune when you turn the little handle. (screenshot by Michelle Starr/CNET Australia) Meanwhile, you can head over to the Music Drop website, have a play with the software and save up a tune for a rainy day.
How to make a mini milling machine- manual or CNC! I think one of the best things about tools is that they can be used to make more tools! I decided to build a miniature milling machine for machining plastic parts, creating wax patterns and for drilling really small precise holes. I also wanted to design it so that I could convert it to CNC for machining circuit boards and for doing repetitive work. The finished mill has a 11" x 18" footprint and is about 19" tall. The X axis travel is 6 1/8" The Y axis travel is 6 1/4" The Z axis travel is 2 1/4" If there are any questions about any of the drawings or something just doesn't make sense just ask! Follow along and build one for yourself!