I have ordered a roll.. updates to follow. Please comment on their quality if you have tried it.by TTN - New Zealand RepRap User Group
Is there any particular reason things cannot be kept simple by using, say a 10:1 (or similar) pulley ratio is used to drive the mirror shaft with a stepper motor? Also is focal length going to be an issue when using a co2 laser?by TTN - Powder Printing and Selective Laser Sintering
Hi Joshua, Do you still tinker on the machine? How have things turned out? I've loved reading about your journey so far and the attempts at making this into a startup.by TTN - Powder Printing and Selective Laser Sintering
QuoteVDX ... you'll need a CO2-laser with 10640nm with >10 Watts, but PMMA could suffer with heavy warping, so a heated chamber is a must too ... How are you getting these numbers?by TTN - Powder Printing and Selective Laser Sintering
Can anyone tell us how they are finding the filament? Esun used to get mixed reviews in the past, though recently it sounds like the quality has gone up. I'm tired of paying 2x or more per kg compared to what my overseas friends pay for quality filament (in usa: 28usd, delivered = 38.7nzd for 1 kg, top quality. In new zealand, from vik: $70 for a kg by the time it gets to my door step. And only iby TTN - New Zealand RepRap User Group
Thews is a user on IRC in #bigdelta on freenode.net aka thews-wo or thews-work If you can get the torque, why not use it. The point of the nema11 was to reduce weight, while still being able to do the extruding functions. He's made a newer fully parametric version of the filament drive: Since I run 3mm filament I had to resize some parts and thicken them.by TTN - Delta Machines
I could probably shorten it a bit. If it was too short it would have to move around with the hotend too much while printing, though there is definitely room for shortening yes.by TTN - Delta Machines
QuoteDC42 What retraction speed and acceleration are you able to achieve? I had to set microstepping to 2x to be able to get fast enough retracts on my RAMPS 1.4. I was able to go up to 20mm/s but use 10mm/s because 20mm/s retracts weren't always reliable. The 3mm filament I use is really stiff so if you run thinner filament I'm sure you could use a higher speed. It works beautifully! I'm retracby TTN - Delta Machines
Thews made a new extruder drive last week. I've been testing it and it works great! Best part about this drive is the quick release setup and being able to clean ground filament off the spur drive without having to disassemble anything. The whole idea of suspending the extruder like that is to reduce the length of the bowden tube. Like this I only need 2.1mm retracts and I don't get any bby TTN - Delta Machines
I'm moving from Marlin to Repetier, and I'm having some difficulty moving across my delta calibration settings. The setting I'm using in marlin is: M666 D422.0 X-4.09 Y-3.15 Z-4.62 A-0.13 B-0.09 C0.23 I0.00 J0.00 K0.25 R195.7500 What I'm trying to do is take this configuration and put it into Repetier. I've googled it, read the configs, tried things but I can't get it to work, it doesn't moveby TTN - Repetier
Lower your segments/s, that should help with the vibration (stuttering) that you're getting.by TTN - Delta Machines
I've used 0.9 degree stepper motors with A4988 drivers set to x8 and x16 stepping on ramps with repetier firmware ( I use it because I can get lots more segments/s than with marlin), and switching between 200 and 100 steps/mm and I have to say, setting it to 100 steps/mm with x16 stepping gives nicer results. The x8 stepping gives more of a moire pattern than with x16 stepping at 100steps/mm. EDby TTN - Delta Machines
Yes, just over 200grams for the complete flying extruder, that includes the filament drive spur, screws and PLA. (209grams if I remember right). I'm in the middle of a large print atm but I can confirm the weight of just the stepper motor later if you'd like. EDIT: Could be that the stated weight is the weight for postage?by TTN - Delta Machines
The one I'm using is this one: I followed this design. Links for parts are in the description: The stepper motors themselves on the two pages seem to have hugely different holding torques. The ebay stepper motor claims 6Ncm ( 0.06Nm) min torque, while the link I posted claims 1.3Nm which makes me think their unit conversion is off by a factor of ten. Not sure what to make of it.by TTN - Delta Machines
Quotedc42 QuoteDjDemonD Sounds good I see there is a 100:1 nema 11 being offered also why not use that one? Would need much less motor current. The motor speed and therefore the steps/mm would be very high. If your controller has variable microstepping or jumpers to set the microstepping, then you could reduce extruder microstepping to bring the steps/mm down to a value that the controller can hby TTN - Delta Machines
27:1 is plenty gearing as it is. It has plenty of strength for pushing 3mm filament. There is no point gearing it even higher as the nema 11 only ever gets warm and doesn't overheat at all, all while having enough torque as it is. Gearing beyond 27:1 would just slow down your ability to do retracts.by TTN - Delta Machines
XY moves have a low inertia with the nema17 flying extruder, but with a geared 27:1 nema 11 direct drive it's even better while still being plenty powerful for 3 mm diameter filament. Weighs a lot less: 480g vs 200gby TTN - Delta Machines
Have you guys seen S0up's sextruder? (suspended extruder): I'm using one and I've drilled out the filament path to suit 3mm filament and it works great! my one -> EDIT: I did a geared filament drive for 3mm with a nema 17 motor The complete unit weighs 480grams whereas the sextruder weighs very close to 200grams ( can't remember the exact number, it was 205 grams or something like that).by TTN - Delta Machines
Mmm. Well I found mine difficult to calibrate. I'm building a delta printer and I would say its basically on the same level, but it has the extra step of calibrating steps/mm.by TTN - Delta Machines
Quoterepetier .. so units should not really matter. Yep. Well, until someone like me changes the microstepping rate and gets a head into bed crashby TTN - Repetier
Improvement suggestion: Change: #define DELTA_X_ENDSTOP_OFFSET_STEPS 0 #define DELTA_Y_ENDSTOP_OFFSET_STEPS 0 #define DELTA_Z_ENDSTOP_OFFSET_STEPS 0 to: #define DELTA_X_ENDSTOP_OFFSET_STEPS 0.0*AXIS_STEPS_PER_MM #define DELTA_Y_ENDSTOP_OFFSET_STEPS 0.0*AXIS_STEPS_PER_MM #define DELTA_Z_ENDSTOP_OFFSET_STEPS 0.0*AXIS_STEPS_PER_MM unless, of course, floats are an issue. I'm not too familiar wiby TTN - Repetier
We might be able to combine it with the coming up 3d printing day:by TTN - New Zealand RepRap User Group
Is it possible to set a PWM value for the FAN_BOARD_PIN?by TTN - Repetier
I can't find it in configuration.h (got it from github) I'll just define it in configuration.h and that should do the trick. Thanks! EDIT: workedby TTN - Repetier
Thanks! Though I can't seem to find the setting in configuration.h Is it in configuration.h or where should I look? For future googlers who come looking here this may also be of interest/use to you:by TTN - Repetier
I did lots of googling and I searched this subforum but I didn't find what I was looking for.by TTN - Repetier
Is there a PWM solution that can turn on the fan when the stepper drivers power up? To provide some cooling, I'd like to put a small fan near the board to get some air circulating, it only needs to run when the stepper drivers are on. PWM would be very hand in this case, then I can set it to 50% or so, whereas now if I hook up the fan it will be on full speed all the time which is noisy. I'm usby TTN - Repetier
Quotedmould Quotejustcurious You should really not try to explain something you obviously do not understand :-(. you create a lot more confusion than necessary for a novice that try to understand what is needed. I would politely suggest that you take your own advice. Dave Just wow. Dmould, you make it out to be a lot more complicated than it is and obviously don't really know what you're doiby TTN - Slic3r
Fixed.by TTN - Delta Machines