I've got a printrboard with Marlin too so I'm going to try some autocalibrate (the G30A command that probes to iteratively solve the geometry rather than the G29 that just maps the bed) action over the weekend and see where that gets me, still not convinced calibration is the issue though as the parabolic motion only seems to happen when actually printing. Maybe the PSU is getting overloaded whenby Zedsquared - Delta Machines
Hi Folks, I did check bed clearance at the centre and each tower, I can also scoot the head right across the bed without it crashing if I use the jog so I don't think the radius is wrong. I'm away from the printer now until I get back to work tomorrow but plan to try some handcrafted Gcode to see what happens. I can check segments per second then too but I'm pretty sure it's the same asby Zedsquared - Delta Machines
True I have since tried reverting from the edge branch firmware to stable master ...same result. Also I've got into the gcode and changed all the rapidmoves (F3000) to slow ones (F300) and no change either... hmmm! I've attached a photo, where you can see the fill getting squeezed dry by the head hitting the bed (as far as I can tell). If I move the head using the jog on the LCD to 0,0,0 it iby Zedsquared - Delta Machines
Hi Folks, I have a stock sized Mini Kossel built mostly with bits from builda3dprinter.eu only the printed parts were sourced elsewhere for speed in delivery. I'm using ABS filament and have an E3D V5 hotend and a mylar bed heater from builda3dprinter. Electronics are smoothieboard 5X and smoothieware. I'm pretty sure I have calibration down OK and can see flat movement when I jog the heaby Zedsquared - Delta Machines
Hi Folks, I'm using a J head MK V clone on my mini Kossel that looks great in terms of machining, dimensions and sticking to the proper design (right number of fins on the PEEK etc). It was supplied with two PTFE liners, one for 3mm filament and one for 1.75mm. I'm using 1.75mm PLA to print with and am getting a lot of blobbing and drooling. There even seem to be times when filament is actby Zedsquared - Printing
I have just got a rev B printrboard going with my Mini Kossel with working Z probe and all endstops. I have the Z probe connected to the two outer pins of the e-stop connector and have the switch wired with NC and Common (the two outside terminals). The tower X Y Z endstops are all wired to NO and common (the middle terminal and the one nearest the lever hinge) and are also wired to the two outerby Zedsquared - Delta Machines
I've heard several tales of innocent youtube videos of 3d printers at work getting flagged for copyright violation, usually for obscure electronic dance tracks IIRC Don't tell the RIAA there's another vector for music piracy out there! Cheers, Robin. P.S. yeah, circles sound coolby Zedsquared - General
This is a scary read for those who think it takes lots of power at high voltages to start a fire: Sleep well Robin edit: fixed linkby Zedsquared - Safety & Best Practices
QuoteWith that, I'll end this thread. However, I will open another thread to call on the management team of this web site to clean up the mess. I think this illustrates the culture clash you are currently experiencing rather well. This thread is out of your control, you can't close it and the forum is more of a community with some who volunteer to police gross abuse and profanity rather than aby Zedsquared - General
The army bugle call for when the meal is ready was "come to the cookhouse door boys " like this: Seems appropriate Musical notation here: Cheers, Robin.by Zedsquared - General
QuoteSchrödinger's Print: when you go to bed leaving your printer printing, when you wake up you may have the perfect print or your printer may have blown up. Both realities are true till you get up and look. Nice! Goes with the many Heisenbugs that occur in printers Cheers, Robin.by Zedsquared - General
I'm going to go out on a limb and say: There isn't one. It's not an easy problem to solve, any algorithm that tries to do this would have many parameters to adjust to compensate for the differences in lighting etc between photos. Then there's the fact that one 2d photo simply *cannot* contain all the information to model the 3D object. There are always hidden faces and all an image analysis alby Zedsquared - General
Yes, it has been done commercially. Search with the term EBM or Electron Beam Melting to find more info: also there's a section of this forum dedicated to an EBM design: have fun! Robin.by Zedsquared - Kartik M. Gada Humanitarian Innovation Prize
There might even be a possibility that the right infill pattern would create a 3d cell structure to dissipate energy efficiently by deforming. Again something that might be difficult to achieve by another manufacturing process. Of course if decent 3d printed armour is developed then some latter day Ned Kelly type will give it a bad name fairly soon after I'm sureby Zedsquared - General
That's not a bad idea! Maybe snap together ABS armour scales with kevlar cloth sandwich might be pretty tough.The 3d printing aspect would be used to tailor the scales to fit an individual comfortably.by Zedsquared - General
There was a pickit 2 AVR mod: but you can also bootstrap via arduino, just buy an ATmega with arduino bootloader already programmed plus a 16MHz crystal and capacitors (under $10 a kit from various ebay sellers) then make a minimalist "arduino" circuit (basically just the MPU, crystal, caps and some PSU decoupling caps plus a header to fit on and FTDI USB to serial cable ) and make a progrby Zedsquared - Developers
There's not even a proper "this device" more a family of 3D printers that share the common goal of being made substantially from parts that are either easy to obtain (because they are commodity mass produced things) or can be printed by another printer (like mounting brackets and so on). Hence the electronics started out as commodity "arduino" boards with stepper motor driver addons that had beenby Zedsquared - Developers
Yep, work in progress but getting perilously close to release: Cheers, Robin.by Zedsquared - General
Internet Relay Chat ...grand daddy of all instant messaging systems Here's a link to some clients for windows, if you're mac then google will help you I'm sure! Cheers, Robin.by Zedsquared - Developers
Lie detectors are nowhere near 98% accurate, even in a controlled situation with plenty of time to work. Imagine if everyone at the airport had to pass a test that took 20 mins, it's bad enough when queues pile up for a 30 second baggage scan! To paraphrase the following article, you could stop 100% of the terrorists by simply denying everyone a flight... The Guardianby Zedsquared - General
You don't want to mess with making pan handles, imagine what would be the consequences if one failed while you were carrying a boiling pan of pasta to the sink to drain for instance! As Newperfection says, anything that softens with heat is a bad move for this application. Cheers, Robin.by Zedsquared - General
If you want to keep mains stuff runnig as well then check out Dans data on UPS upgrades Some good discussion there. Cheers, Robin.by Zedsquared - General
Yep, it is frustrating but sightings of beta boxes are coming in now This is very fresh "spoor" of a wild makibox: No Beta test print results or calibration tales yet but I expect they're only days away. Cheers, Robin.by Zedsquared - General
I'd *really* like someone to chime in and correct me on this but AFAIK: QuoteWhich one can fully replicate itself, circuits included? No printer anywhere can do this yet, I expect the situation will be the same in five years time too. I'm slightly saddened that this question got asked really, too many journalists are getting too excited and not doing their research I'm afraid. Just reproducby Zedsquared - General
QuoteHow does one share your ideas with the world and not go crazy when other people takes it and turns it into amazingly profitable successes? Some people have different ideas of "success" that don't have to include "profitable". I'm sure Johan is pretty happy that his code is out there and doing good for many people, not just cloistered up in a device in his workshop. I personally applaud whby Zedsquared - General
The idea of extruding "up" for in fill will run into a lot of problems as regards stopping the extruder colliding with the work though... Layer by layer it isn't a problem as the head is always moving through empty space yet to be printed in, add the third dimension and all of a sudden the exact size and shape of the whole extruder assembly starts to matter. Cheers, Robin.by Zedsquared - General
How about printing an embossed QR code onto a surface of the object, then fill in with ink as appropriate before leaving it to be found. QR code would point back to a page on the wiki or something with suitable reprap evangelistic content and an explanation of what the campaign was about. You'd have to watch out the community doesn't get the "litterbug" brand though. Cheers, Robin.by Zedsquared - General
While talking about fire starters, this is quite interesting reading: Voltage_The Incompetent Ignition Source_Final.pdf Cheers, Robin.by Zedsquared - General
Yep, definately faster ... thanks! Infact I'd go as far as to say reprap.org is now as fast as any other site I visit, nice tweak! (whatever it was). Cheers, Robin.by Zedsquared - General
I'd imagine retracting and moving without extruding might be a problem, the fibres would drag things around if they were too long and not give much added strength if too short. Perhaps an addon fibre shear at the nozzle to chop things off cleanly? Cheers, Robin.by Zedsquared - General