I know sort of bad form replying to my own thread Some more photos. A full height view, really should put a coat of paint on those front panels Here is a better view of the arms and effector, the cpap tube in this photo is the normal size tube delivers the air from the 75mm radial fan to cool the cold side of the extruder, the air is exhausted back upwards from the right hand side. There isby aussiephil - Delta Machines
History - recap Back in 2016 I embarked on building a large delta and had reason recently to reflect back on that thread to ubderstand when i built this thing and some of the reasons The goal was to have something with a large build volume in this case it is around 590 round and 500 tall. Something that was faster than my FlashForge Pro Faster and bigger, sounds familiar. Insipration was takenby aussiephil - Delta Machines
Tomas: With 32bit board just go with 0.9deg steppers, might not be a lot to gain but why not get as much as possible, they will give more precise positioning PRZ: actually I used 20mm rod at 1600mm long.... I believe 16mm would have been ok at that height, but mine is really a huge printer with just about everything scaled upby aussiephil - Delta Machines
QuoteFloyd I design my parts with extra tolerance in the holes for just such limitation as of the moment. Honestly +/- .5mm on a hole is not that bad IMO. 1/2 mm tolerance is not even vaguely acceptable really and designing the tolerance in may work for you it would be better to make your prints more accurate. Personally I get +0 to -0.15 above 2mm and design all holes to the exact required sizeby aussiephil - Printing
I was curious enough to print this on a Flashforge Pro that has been fairly accurately calibrated. Doing nothing special in Simplify3D over my normal settings i got a hole size from 4.18 to 4.26, so slightly oval, an M4 bolt slides through the hole with no binding. Base speed 55mm/s prior to slow down for small object, actual may well have as low as 30mm/s I now use Fusion 360 and find small hby aussiephil - Printing
Hey PD, as it's shown in the first image it won't work. You don't have enough space on the power input for cabling and the stepper side can benefit from a bit more room. Air flow must be under the board for any real cooling benefit and ideally should have a little turbulence to aid in heat transfer. I have a Duet WiFi case design on thingiverse and I am planning a 085 version as well that chanby aussiephil - Duet
QuoteDjDemonD Looks like a great printer. I'm a big advocate of flying extruder and have designed (using the term loosely) a bracket for a titan extruder. Yours does seem to wobble about a lot but perhaps this doesn't show in the prints as the effector and arms have much more mass than a little kossel mini. The normal scheme isn't going to work though as the rods are long and the extruder would bby aussiephil - Delta Machines
Quoteshadowphile That is some really nice printing and engineering, congratulations! You have inspired in me that my biggy-Kossel build can give higher performance. Duet running on a 1M tall 350mm bed with 300 build zone, 300mm 500W silicone heater under 3mm borosilicate glass, black thermally-conductive double-sticky tape from heater to glass, no heat spreader (I could not get high enough temby aussiephil - Delta Machines
Quoteeflin1 Great build thread , I ´m impressed , I´m planning to build a simular sized Delta based on the german hexagon delta basics, however your design makes me rethink that route. So are you still planning to continue with that design version 2 ? What made you decide to not go for a linear Hiwin carriage design ? aren´t such long rods (even 20 mm ones ) kind of risky regardingby aussiephil - Delta Machines
This panasonic datasheet is quite interesting even if not a high temp version, of the 4300 thermistors in Mousers catalogue only 23 of them are 100k/300c versions and the cheaper ones are 2% or 5% on the resistance tolerance value. Further datasheet diving and shows that for glass encapsulated versions the still air time constants are measured in many of seconds, up to 15 seconds in at least oby aussiephil - General
QuoteDyze_Design You are right, thermistors aren't the most accurate between the three options. However, the repeatability is very good. As any filament require a lot of fine tuning, the key is to get the same temperature each time a target temperature is set. For scientific experimentation and laboratory measurements, I do think it is very important to get a reading without any offset. For 3D prby aussiephil - General
QuotePDBeal Wouldn't the width be different depending on how much filament is hanging from your hotend, as it gets longer, I'd imagine gravity will pull it down more so than if it was fresh out of the nozzle. I've also seen right as it starts to extruder in mid air it begins to overlap itself at first and then finally begin to fall slowly which in turn would also affect the width of the extrudedby aussiephil - Printing
Everyone seems to ignore the actual filament extruded width. To even get a handle on hole size issues once you have the rest of the machine calibrated you need to measure the diameter of the filament extruded into free air. I have found for ABS on a range of nominally 0.4mm nozzles that I constantly get 0.58-0.60mm. This is 0. to 0.12 larger than the slicer set width. As slicers set their pathsby aussiephil - Printing
Knew I had seen a very comprehensive test in this years ago and it just took me a while to find it See that thread at extremeoverclockers including a full chemical analysts. Cozmicray you may want to read this as the chemical analysts shows its just the same stuff with a different carrier and it is widely used in industry for exactly thermal transfer. A key thing to remember is that any of theby aussiephil - General
Quotebgkdavis two possible causes 1) lost motion due to slippage 2) orthogonal error you can test for 1 by starting your printer and doing a normal calibration and then mark where the nozzle touches the bed and the carraige positions when at XYZ=0, if you can measure the carriage positions accurately. Then, run a program, doesnt have to use filament, just run the program for a couple of hoursby aussiephil - Delta Machines
Quotedc42 What electronics and firmware are you using? If it's RepRapFirmware: 1. Make sure you haven't accidentally enabled orthogonal axis compensation; 2. After or during a print that shows these symptoms, run M122 and check the 'Step errors' field. It should be zero. Do your stepper motors have flats on the shafts? Duet 085 with RRF1.13, this is the machine that's getting the DuetWiFiby aussiephil - Delta Machines
Quotedougal1957 Re Titan Extruder Pleased to report that the New Hobb/Drive Gear has fixed the issue and I am Now very happy with it. Doug Any chance of grabbing the issues, I've searched but can't find any details and despite my Titan seeming to be fine I'd like to know what to look for Cheers Philby aussiephil - Duet
OK A little bit more information.... I printed a square and the near three degrees slope leans towards the +X and +Y corner.by aussiephil - Delta Machines
It leans to the right in the x+ direction. I would have expected loose pulleys to reflect in the independent x and y travel measurements.by aussiephil - Delta Machines
Thought I would try here first as it is Delta specific I think. Went to print some light bulb covers today and the print looked like the leaning tower of Piza. Approximately a 3 degree lean to the +X AND +Y direction as Z goes up. (Edited after printing a cube.) This was fine yesterday and I have printed multiple 200mm tall items that were vertical. The last part printed last night was the greby aussiephil - Delta Machines
Quoterowow I am going run my larger 1mx1mx1m for 50 hours strait (which has a ramps board), once a certain customer has finished with his model. You claim people are winding me up and exposing me yet you are on;y coming in back agian and agian being aggressive and bringing up the most illogical comments. Please be positive and actually do something beneficial to the community. Not making funnyby aussiephil - Mechanics
QuoteOrigamib So, by my calculations ramps is not that cheap..... ramps = £5 arduino = £12 Drivers = £20 (£2 each, 5 are needed and 5 as a back up. you can go cheaper, I have tried but they break... I went for the slightly more expensive option and they are pretty decent actually) Raspberry pi = £30 (clones of the pi don't exist as far as I'm aware, they have a deal with the chip providers so cby aussiephil - Mechanics
How about 12 months strait printing on a single printer.... Your still ranting and raving and calling others stupid... Keep looking like the fool you are People have really started to wind you up and expose you, keep at it All the reasons you buy a ready made product is why I buy a 1500 printer or a 150 controller to put in a $2000 delta because I have no intention of wasting time troubleshootiby aussiephil - Mechanics
Quotefrankvdh Sheesh! Calm down folks! Name-calling isn't helping. Let's just get some signal into this noise. Been trying to, but as per the post two up the ranting and raving continues. There is only one side and that's rowow's side................ Rowow - show me a successful 24hr plus print from one of your dozen printers..... your continued ranting shows you to be just what you really areby aussiephil - Mechanics
Very cool, nice work..... do you sleep at any time?by aussiephil - Duet
Rowow. You really should pull your head in Yep !00 to 120 an hour for my technical expertise.... I have been doing electronic design and micro processor programming probably since you have been a child in nappies... Ardino is not the only kid on the block and I moved to 32 bit processors years ago and preparing to move to 64bit in the near future. When I looked at the state of controller desigby aussiephil - Mechanics
Quoterowow Seems digital dentist was correct. This is yet agian very sad and depressing to me. To see the reprap community waste $150 solving issues which on paper look amazing, however in real life are only little setbacks and are easily solved. If someone can provide a ACTUAL reason to move to 32 bit then im glad to hear. However for $150 its not worth it and I will wait until other manufactureby aussiephil - Mechanics
Quoterowow If that's the best you guys can provide then im done. Again, half of what you said is completly bs and is not an issue. Adequate 5v power supply? My ramps board has NO issues running a full graphics display. Maybe you should quit paying $30 for a cheap broken board. And stepper driver cooling? Again, WHO HAS ISSUES WITH THAT??? I use drv8825, the most heat producing stepper controller,by aussiephil - Mechanics
Hi DC42 Duet 0.8.5 Installed the update, noticed the temperature reading, thought "that's high i'll calibrate", picked a number to get it in the ballpark at least.....set it and rebooted, it was only then that I noticed the reading jumping around at least plus/minus 1c each side of average. ie at the moment i'm reading from 13.6 to 16.6 degrees with it constantly changing. any thoughtsby aussiephil - Duet
Quotefrankvdh Let me rehash things a little.... It seems that we need (more or less) 1. An adequate 5V power supply 2. Fast transport of Gcode from a host computer to the printer. 3. Stepper drivers that are adequately cooled. 4. Software-settable stepper motor current (although I think this more a nice-to-have than must-have) 5. Easy upgrade to newer firmware (and therefore settings in EEPROM rby aussiephil - Mechanics