Without knowing what printer design you have, and what firmware you're running, it's hard to give useful advice. Coincidentally, I just went through calibration of my Delta here -- maybe that's why I think your problem is calibration rather than hardware. Here's the steps briefly. Googling for "Delta 3d printer calibration" will get you lots of hits with a lot more detail. 1. The bed must be atby frankvdh - Delta Machines
An update and lessons learned: After yet another one failed, I've replaced the corners of my D810 with these metal parts. This resulted in a wonderful increase in rigidity, but some further pain. Firstly, the metal parts cause the printer to be *slightly* larger than the original... a mm or two. I used the old attachment holes in two sides of the acrylic top to attach to the 2020s, and drilledby frankvdh - Delta Machines
Quotelkcl what you're referring to, dc42, as i understand it, is that some of these LDO regulators work like a car brake, in effect diverting the extra voltage directly into heat. so if you supply them with 8V and demand 1A current it's fine... but if you put in 12v and demand 1A current, the LDO regulator throws off all of that extra power (12-5 volts times 1A = 7 watts!!) as heat. this is whaby frankvdh - RAMPS Electronics
When I slice the linked STL with Slic3r, it doesn't generate a perimeter around the entire set of objects. This applies to both v1.2.9 and the latest Linux build Slic3r-1.3.0-dev-451f2e3-x86_64.AppImage. Workaround is to split the file into multiple objects using the Split command in Slic3r. But without doing a preview, there's no way to know that the split is needed. In case it's relevant, tby frankvdh - Slic3r
Ah, thanks @Dust.My mistake. Found the right one (I hope) at Downside is Quote Note that if you have shields using the Analog input they may not work properly since there’s only one input supporting up to 3.2V, as Arduino UNO board support 6 analog inputs up to 5V. Perhaps the Noduino Quantum would be a better choice? But they're about 3 times the price.by frankvdh - Developers
I suspect that the ESP8266 is only used as a serial-to-WiFi interface, and the hardware is being driven by the ATMega 328 In which case you would have to do quite a lot of work to move any firmware functionality to the ESP8266. But perhaps a useful platform for something like klipper @KevinOConnor which already divides up the functionality.by frankvdh - Developers
FWIW, I contributed on another (non-3Dprinting) project a while back. The guy who maintained that root archive controlled things totally. It did mean that when you submitted stuff, you often got back a terse rejection message about quality. And that put off a lot of potential contributors. OTOH, when you *did* work with the code, and figure out the right way to do things, everything was rationalby frankvdh - General
I haven't tried it with PET-G, but I have used "Gorilla Glue" which seems to match up to its claim: "The water activated polyurethane formula expands into materials to form an incredibly strong bond to virtually anything making Gorilla Glue your solution for almost any project or repair." It expands while setting, so you do need to clamp the pieces together for a couple of hours.by frankvdh - General
I've recently rebuilt my Delta with these I'm very happy with the rigidity they introduced. It seems to me that these could be simplified into a straightforward extrusion.by frankvdh - Developers
Quotefma You're suggesting to put a short brass tube inside the 6x3 PTFE tube, in the Diamond threaded space? Yes. My thinking is that 6mm PTFE might not have much depth into an M6 thread, so the brass tube would stop the PTFE from collapsing and therefore stay in the fitting better. Also that pushing a 3mm OD PTFE into a 3mm ID PTFE tube would be difficult (although I've never tried it). Quoby frankvdh - General
lists Teflon tube 030060PT 3*6mm 3mm 6mm Gas or liquid; `-190 to 280 degrees Celsius If 3mm ID is too big, you could maybe use a 2*3mm tube inside that? Teflon tube 020030PT 2*3mm 2mm 3mm Gas or liquid; `-190 to 280 degrees Celsius Or probably better would be a 2*2.9mm metal inner tube. AFAICT, PTFE is only sold in metric sizes.by frankvdh - General
Quotecwaa Here is the survey.... You can weasel word the results if you feel the need! Without wanting to fan the flame-war, this is "This first list of boards are the ones that were most talked about on the Reprap IRC channel up to some time (March?) in 2016". What people are talking about is the *quality* of the board, not popularity. They *may* be correlated, but I suspect that price and poby frankvdh - General
RAMPS is an electronics board... it plugs into an Arduino Mega2560 and has stepper drivers and MOSFETs and connectors for fans and heaters and all kinds of other groovy stuff to control the printer hardware. Marlin is firmware (i.e. software designed for some particular piece of hardware). It's possibly the most widely used firmware (but lets not get into *that* flamewar!)by frankvdh - General
I think everyone's more or less agreed that the Duet (Wifi) with Reprap Firmware running on it is the best controller currently available. But it does also come with a Rolls Royce pricetag. If all you're after is dual extrusion, then there's a number of controller boards that can drive 5 steppers. Probably the cheapest option would be an Arduino 2560 plus RAMPS 1.4. Marlin should be straightforwby frankvdh - General
Marlin has a safety interlock to prevent cold extrusion, so you have to heat up your hot-end above 170 degrees. I don't think that applies to the XYZ motors though. Fans and hotend working means your 12V supply is good. Are your stepper drivers plugged in the right way round? When the motors are on but not moving, are they easy to move? You should see 12V across one or other pair of wires to eacby frankvdh - General
Quote3DLTech I copied my working copy of Marlin from my PC directly to my pi including all the subdirectories and libraries. Does the directory structure need to be rearranged for Rasbian? Is your PC running Windows? If so, there's numerous variations between that and Linux on the RPi; File and directory names are case-sensitive on the RPi, and you need to use forward-slash rather than back-slby frankvdh - Firmware - Marlin
Squares are cheap relative to square roots. But there are other solutions; e.g. the midpoint circle algorithm calculates the x,y coordinates of a circle without doing any multiplications, divisions, square roots, and only using integer arithmetic. I suspect that this, or something similar from the world of computer graphics, could be developed to calculate the inverse kinematics of printers withby frankvdh - Reprappers
Quotedeckingman ... one of more filaments may be heated but unused for a long period of time - an hour or more depending on the object being printed. It is under these circumstances that strange things start to happen which "single filament" users will not have experienced. It seems to me that a workaround shouldn't be difficult -- ensure that every 30 minutes or so, all filaments are extrudedby frankvdh - General
Having just bought a secondhand uPrint plus, this is suddenly interesting to me, so please forgive re-awakening an old thread. It occurs to me that if you get a brand-new spool, extract its EEPROM and copy it, you can then plug a fresh EEPROM into a spool each time you refill it. If people have appropriate EEPROM programmers, then there's no need to physically mail EEPROMs around the place; justby frankvdh - General
$3000 for the da Vinci Color is too expensive for me. Especially when you're also locked into buying filament from them at US$35 for (I think) 600g. I'll wait for the Chinese clones next year.by frankvdh - General
QuoteJustSumGuy I would avoid that, in case of a skipped step or some other malfunction you could drive your head into the bed Practically every 3D printer runs on the assumption that it won't skip steps. Once printing starts, the endstops aren't checked again. So if you can't assume that every step will work correctly, you can't reliably print at all. In which case, it doesn't matter if theby frankvdh - Firmware - Marlin
Quotecwaa Peer reviews are a silly idea and was only started 40 years ago. Having done some academic stuff about 40 years ago, I call BS on this. Can you give a reference please? FYI, Wikipedia says "WA prototype professional peer-review process was recommended in the Ethics of the Physician written by Ishāq ibn ʻAlī al-Ruhāwī (854–931). " I'd go so far as to say that this kind of thing is theby frankvdh - General
This method relies on measuring the resistance between nozzle and a metal bed... when it's zero, the nozzle is touching. If your printer has a metal structure, the nozzle may already be electrically connected to the bed, so it will always read zero. Obviously you can't use this if you print onto glass or tape, which is exactly what most people do.I don't know of any people printing directly ontoby frankvdh - Firmware - Marlin
You need some kind of sensor to sense the touch. Various kinds have been used; a microswitch, electrical, piezo-electric, load-cell. Marlin supports any of these... they just provide a digital on/off input to the controller. I have a cheap AliExpress printer which came with the microswitch. The nozzle has to move (.5 mm or so?) to activate the switch. It's sprung to return it to the same place wby frankvdh - Firmware - Marlin
According to tungsten has a lower coefficient of expansion than most other stuff, especially steels. So deep-freezing the nozzle may loosen the bit?by frankvdh - General
QuoteSimba Yes it is mutually beneficial. Reprap community benefits and company gets good PR and related sales. Classic loss-leader approach, main difference being an intent to only break even so we can sustain it, and maybe even get ourselves a slightly better margin over time. I can tell you why companies charge 25X on a product...you'd better believe it's because people don't know better, aby frankvdh - Reprappers
Various people have been working on ink-based colouring systems for quite a while, I think mostly focused on inkjet technology. A soon-to-be-released example is Getting back closer to the Diamond approach, I wonder about an "asymmetric" hot-end. Have one large (e.g. 3mm?) base-colour filament, and several smaller (1.75mm? or maybe 1mm?) filaments. These smaller filaments would really just be soby frankvdh - General
QuoteSimba For example we get bearings for $0.10-$.22 a piece that I see routinely sold for $5 a piece. For other products the AliExpress price is not too far from ours. I guess the question is why would people pay $5 for a 20c item. If people realise how easy it is to get stuff from AliExpress, that should probably put the $5 bearing suppliers out of business. OTOH, some people value their tby frankvdh - Reprappers