Checkout the excellent writeup that the_digital_dentist made about belt paths. CoreXY Mechanism Layout and Belt Tensioning -os3dpby os3dp - CoreXY Machines
Look at the second picture, it shows where the real z guides are. -os3dpby os3dp - CoreXY Machines
It is hard to tell in the picture, but it almost looks like the print is coming off the glass on the right side. If that is the case, it will drag head across the already printed area. -os3dpby os3dp - CoreXY Machines
What happens if you de-level the bed downward in the back so it it too low in back. Does it then make the front too close to the bed? Where does it start leveling? Front left? Front Right? Back Left? Back Right? -os3dpby os3dp - CoreXY Machines
As The_Digital_Dentist said, photos of your printer would be helpful in particular the belt path. -os3dpby os3dp - CoreXY Machines
Quoterenatortb But this is for one motor only, right? I intend to use four motors, so the processor will not handle. 4x16000 = 64000 pps (Marlin = 40000). I misunderstood something? Going crazy right now! LOL! No, look at the following. Quoteo_lampe 40.000 ppm is for all steppers, but it doesn't make a difference for the CPU if it is one stepper or 8 steppers, because the step pulses are all seby os3dp - CoreXY Machines
The Duet doesn't need to be compiled for different settings. All of the configuration is set in the text file on the SD card. The firmware on the Duet only needs to be upgraded when a new version comes out, but the configuration is set in the text file. IMHO, A beautiful design. -os3dpby os3dp - CoreXY Machines
I don't have a Duet yet, but from what I've read, you just change the text file on the SD card and then boot up the Duet and it is then set. -os3dpby os3dp - CoreXY Machines
Quotecarl67lp Anyone offering up-to-date printed parts for sale for this printer? I'm considering tearing apart a Kossel mini that I never finished and using its parts for a FuseBox, but as I don't have a running printer at the moment, I'd need the plastic parts. Where do you live? Contact me via PM if interested. -os3dpby os3dp - CoreXY Machines
Change the steeps to 400 and it SHOULD work. Then do the M205 command to check that it is using it. -os3dpby os3dp - CoreXY Machines
Double check to make sure micro-stepping jumpers are set correctly. -os3dpby os3dp - CoreXY Machines
Not sure how to check this off the top of my head, but you may need to look at the 5volt regulator on the Arduino. -os3dpby os3dp - CoreXY Machines
Quotewidespreaddeadhead Uploaded my modified firmware, but nothing moves. The full graphics controller doesn't light up, so I connected through repetier-host and when I home the motors they just hum, the hotend and heat bed are off but say they are at printing temps, and when I do turn them on they don't heat up. Any clues? I still need to adjust the pots for the motors, but having none of themby os3dp - CoreXY Machines
Quoterealthor Very interesting idea, the two can be combined you know. I was going to suggest the following scenario (has already been explained somewhere above but doesn't hurt): 1) read the hardcoded X_travel and Y_travel (say 250mm and 250mm) for a bed that is 200x200 2) assume Y is at the far-est position, namely touching the close Y clamps (it has to go all the way of 250mm before reaching tby os3dp - CoreXY Machines
QuoterealthorI've found the digital current settings in Marlin & Repetier: Marlin: Configuration_adv.h setting called DIGIPOT_MOTOR_CURRENT Repetier: Configuration.h setting called MOTOR_CURRENT Now if these are hard-coded values, how can they be altered during homing? This might not be as difficult of a task as I think. Those settings will work if you have a controller board thatby os3dp - CoreXY Machines
I somehow had an old page. I posted but didn't see ALL the other posts before. -os3dpby os3dp - CoreXY Machines
QuotedeckingmanI'm trying to find out how the weight of 2020 aluminium compares to the weight of solid steel rods (anyone know?). I'm thinking that for what I'm planning, X and Y will be in region of 500mm so I'm guessing that I ought to look at 10mm rods as a minimum. 500mm 2020 V-slot weighs in at 222g -os3dpby os3dp - CoreXY Machines
Quotelkclquestion, though: i note in the openbuilds delrin double-v-rollers they have *two* 625 bearings per roller. is that absolutely strictly necessary? would tight friction press-fit over a double-v roller using a single deep groove 625 bearing be okay? if not *sigh* that would mean 18 625 bearings. lkcl: The openbuilds rollers have two bearings and a 1mm spacer to make the roller. Theby os3dp - CoreXY Machines
Quoteddragon Not sure what is causing this. But after around layer 11 the printer starts to print down to the left (off set)... I changed the Stepper_High_Delay to 2... still doing it. I'm running pretty basic setup... Ramp 1.4. I have a smart control on it... would this do it? My guess would be that your stepper driver current is too high and overheating and possibly shutting down for a few secby os3dp - CoreXY Machines
MrPegapom, On your site you have a picture labled "Reductora" Do you have the files for the reduction gear as it looks 3D printed? -os3dpby os3dp - CoreXY Machines
Lucianog, Is your x-axis at a 90 degree with respect to the y-axis? If not EXACTLY 90, it will show up in the print. A B C D Maybe I should give better example. Tell the printer to go to Each point A, B, C, D. where the coordinates of each is say 0,0 0,100 100,100 100,0. Somehow mark where each point is. Then measure from A-D and then B-C. Those measurements SHOULD be exby os3dp - CoreXY Machines
ruggb, Do you have any details about your belt version? -os3dpby os3dp - CoreXY Machines
I just looked at your extruder on thingiverse. Well done! Is there a typeo on the instructions tab? Bill of Materials: 4 M3x10mm bolts 1 M3x6mm bolt 1 625 bearing Should it be 1 M3x16mm? -os3dpby os3dp - CoreXY Machines
gmh39: You will need to turn on CoreXY in the Marlin firmware. -os3dpby os3dp - CoreXY Machines
I have tried all three. I never heard back from Think3DPrint3D. The two I heard back from had almost identical discounts. 5% till hundreds. -os3dpby os3dp - CoreXY Machines
Quotepatrickrio In my opinion, The Duet needs a US supplier to be competitive here. It needs to get it's price for 5 drivers down to $95 shipped in the US to be considered, and down to $85 or less shipped to be truly competitive. I could probably suggest a good US distributor if they were interested and were committed to these prices..... P I have looked into becoming a dealer for the Duet herby os3dp - CoreXY Machines
Could it be an extruder issue where it spurts out more and less filament at different times? -os3dpby os3dp - CoreXY Machines
@RepRot, How are your idler pulley's mounted? I like the idea of using a toothed pulley but not understanding how you have it able to spin. -os3dpby os3dp - CoreXY Machines
I am based in Utah, USA. Is there a US distributor? -os3dpby os3dp - CoreXY Machines