I've added to the oddities and confusion. I swapped from DRV8825 to A4988, no change in behavior. I tried switching to Repetier exactly the same. It starts immediately after the slow layers (tested by increasing to 10) and about 12 layers later in a near-perfect dent, prints fine from there on out. This printer may get "The Office" treatment soon. It's driving me absolutely batty.by kc8iqw - Reprappers
QuoteDr. DaveMy prints keep moving across the bed because the motors are not moving the print head back towards the zero position. Are you 100% certain you gear/teeth/belt ratio is right? That's my initial thinking (and I had that sort of issue) If it is it sounds more like the motors are missing steps for some reason (bad wiring, stepper driver etc), but the 2 could be intertwined. Might I asby kc8iqw - Firmware - Marlin
Right, and dimensional accuracy isn't my biggest challenge (well yet), if it was consistent through the print, things can be tweaked. What I'm mainly trying to solve here is 1, the concave curve in the let Y side and the bumps all through some of the same layer that even out. The fact it evens out and prints correctly after a about 20 layers is one of the truly baffling things. The consistentby kc8iqw - Reprappers
If it's a cheap mega board, use 10v roughly. 12v causes heat issues and to blow the regulator. I believe that continuity is normal. There has to, at least in all of my custom arduino work, be ground continuity to make the digital rise/fall to work correctly, so this may be normalby kc8iqw - Reprappers
I seem to be having a few issues with my Y axis and cannot figure it out. is printed at 130mm/s acceleration with a print speed of 60, making the walls 30. As you can see in , there is what looks to be over extrusion on several of the layers, but it evens out. Additionally there is a "dent" on the near side that curves in and then back out, correcting itself. The z demision is spot on at 20by kc8iqw - Reprappers
I can also confirm D1 is the valid removal for RAMPS 1.6 and 1.6+ after chatting with folks in IRC. Honestly didn't know IRC still existed and was used, and it made me feel old and slightly nostalgic.by kc8iqw - Controllers
I'm wondering if removing D1 on a RAMPS 1.6/1.6+ remove the 12v power to the Arduino Mega 2560 board? The boards I have contain cheap AVRs so I'm going to have to build a separate power board to put 9v to the barrel connector eventually, but that's another project. For now it'll just have to be happy running off of USB (and hopefully I won't have LCD issues). I've found several references to tby kc8iqw - Controllers
I'd not thought of reducing the tension on the belts because tighter usually equals more precision. I have acceleration disabled in Cura 4.5 and I've printed several test 100mm cubes at different speeds. It seems better a different speeds which again could be stepper driver optimization (I've swapped stepper drivers boards around and it stays with axis, not the board), stepper, some screwball mby kc8iqw - Firmware - Marlin
Not sure if this belongs here or under fabrication somewhere but I have a general question. I'm running ABS (soon PETG, eventually PLA) on a PEI bed. I'm curious as if the chemicals in a can of compressed air would be harmful to either ABS or the PEI layer. It doesn't seem to have bothered it yet, but I'm worried of longer term effects and if there is a better method? I'm running donation stuby kc8iqw - General
I upgraded to the latest FW available, 2.0.5.x and the behavior has changed. Now layers 1-3 print fine and 4-10 are slightly offset but to only a minor degree. I printed 3 of the same on the same platter and all were offset exactly the same (about 2 or 3 mm) I'm at a loss whether this is a hardware/driver/stepper issue as in it's missing steps or is this chaos being introduced from the slicerby kc8iqw - Firmware - Marlin
I have been building a RAMP 1.6 system using Marlin 1.1.x-bugfix (which is 1.1.9 I believe) in an old 3D printer that had it's proprietary control board blow. For a while I've been trying to get it to print a 100mm cube without an odd layer 10-15 issue and then clears up to no avail so it's been sitting. I assumed it was mechanical and never got back into fixing it. I've recently decided toby kc8iqw - Firmware - Marlin
As you can see in the pictures, the first half a dozes or so layers are printing, well strangely but only on the back and left side (Z perspective) and is more pronounced on the back. This is a new build (RAMPs using what was left of a DaVinci 1.0, Cura 3.6.0 and Marlin 1.1.x-bugfix). After some painstaking measurements, I was able to get my PEI bed adhesion working normally but the defect remaby kc8iqw - Printing
I'm trying to use the "level corners" feature to adjust my bed and then want to use the Mesh leveling to correct for the imperfections in my bed/PEI sheet. However I'm running into 2, possibly related, issues. Neither leveling option seems to completely follow the offsets. Level corners seems to come the closest, but is still a good 5mm short on Y and ~12mm short on X. Mesh Bed leveling seemsby kc8iqw - Firmware - Marlin
Ok, just wanted to ensure it wasn't anything obvious. Thanks again for all the help guys. I'm awaiting a new IR thermometer to make the temp adjustments, mainly for the bed.by kc8iqw - Firmware - Marlin
Well it's printing near flawlessly except it has this 1 odd defect that is only on the bottom, leading Y edge and only the first 10 or so layers. It looks like warping except it's shrunk not only up but in on that edge as well. Not sure if any of the hard settings we've been adjusting affect that, but I would like ya'lls input. Thank you both SO much for helping me get it to this point.by kc8iqw - Firmware - Marlin
My last print with 1/32 and the 160x160,5120,3 was correct. If i set to 1/16 and 80x80x5120x3 do I need to modify anything else? Or can it only be determined my test print?by kc8iqw - Firmware - Marlin
If I adjust to 1/16th stepping for X/Y, do I need to modify Z Default max feed rate or any other settings other than the DEFAULT_AXIS_STEPS_PER_UNIT? I plan on leaving my extruder and Z at 1/32by kc8iqw - Firmware - Marlin
QuoteDust X and Y are steps/mm issues you have to match the hardware to the firmware. ie what type of belts, how many teeth on your pullies, microstepping etc. I see in a earlier post you have 200.00 step/mm since you say your getting 24.4 when it should be 20 you need to reduce the steps/mm 20/24.4*200 = 163.93442623 wich is quite a weird steps/mm So my guess would be you have T2.5 belts wby kc8iqw - Firmware - Marlin
Well, Z seems fixed although I have horrible top/bottom layers. It printed a 20mm height, but I'm not sure why X/Y are printing making it 24.4mm. It should be a perfect 20x20x20mm cube. I'm wondering if it's overstepping somehow as when I do corner leveling it goes too far and "clicks" the belt on XY. I suppose I should remove one of the belts and count the actual teeth since 16 doesn't seemby kc8iqw - Firmware - Marlin
QuoteDust The microstepping jumpers are different from the A4988 and the DRV8825 Yup, that's the image I found. Dang I should write a how-to updated for the newer Marlin and using different drivers and also explaining how I came to the end result (e.g referencing the calculators on prusa's site etc). There's no one clear picture for the entire process. It's heating up ready for printing atby kc8iqw - Firmware - Marlin
I think I know why the XY work, I inadvertently gamed the calculator. 1/16 at 8 pulley teeth and 1/32 at 16 teeth both yield 200. I had assumed I had 8 but on further investigation I actually very likely have 16 (since I can count more than 8 but can't get accurate w/o removing one) so they too are running 1/32 stepping as the jumper setup indicates RAMPS setup through 1.4. I have the 1.6, butby kc8iqw - Firmware - Marlin
QuoteRoberts_Clif What is see is a cube that is 25mm X 25mm X 10mm. With the current settings your default axis steps would look like this, Have no way to guess the extruder at this point. #define DEFAULT_AXIS_STEPS_PER_UNIT { 160, 160, 5120, 89 } Looks like jumper setup for Stepper is changing between XY and Z steppers in 1/16 micro-step and not 1/8 micro-step. Looks like the XY is jumper-eby kc8iqw - Firmware - Marlin
Screw: I measured a "grease imprint" as 1.25mm as well as what I've read elsewhere this is stock for Davinci 1.0a (mine is a 1.0). I will attempt to locate my gauge for this as well (I'll be danged if I recall what it's called). Here's the latest print. X and Y are identical in size so I chose only to post 1 of them. Bottom: (I think I can fix this by adjusting various settings in my slicby kc8iqw - Firmware - Marlin
QuoteRoberts_Clif Post a photo of you lead screws get then clear, visible. If you have Calipers post measurements. If not measure with what you have and post. Does not have to be perfect just get close. P.S. Technician Class To Just found my calipers. I've regenerated the gcode, slowing down the printer and putting the extrusion back to 100%. Also, I didn't think to re-level the bed after thby kc8iqw - Firmware - Marlin
M203 Z3 was the change preventing the disaster in my first picture. Now I suppose the question is why is the Z axis squished so much. I fixed the infilling by setting the extruder's stepping up. (M92 E200) I'm in the process of calibrating it via this method Extruder Calibration to ensure the correct stepping for the extruder. Current Values: M92 X200.00 Y200.00 Z2560.00 E170.00 M203 X300.00by kc8iqw - Firmware - Marlin
Well it's for sure one heck of an improvement, but something is still amiss. It's wide X and Y by 4mm and short Z by 11. It's also missing a lot in the top/bottom layers (which may be the software setup since it lost all of my original settings).by kc8iqw - Firmware - Marlin
QuoteRoberts_Clif I see DUST Posted. It is the Default Max Feed Rate. It is an easy test you should preform. most likely he is correct. My Confusion began when I saw a lead-screw with 8 x 1.25 mm, further examining your default Max Feed Rate 8 Ok, as soon as I check to make sure the extruder doesn't have a jam, I'll give this a go. It wouldn't surprise me if it had some partial jam the way itby kc8iqw - Firmware - Marlin
I'll look into uploading a Z-Movement video possibly after work. All of the steppers and the bed were moving/working flawlessly prior to the DaVinci motherboard CPU failing (it wouldn't turn on anything except the case light). Z movement seems perfectly smooth and as far as I've tested, moves the correct distance away from the extruder. The extruder does click sometimes and I'm tearing it aparby kc8iqw - Firmware - Marlin
QuoteRoberts_Clif Question On the Z-Axis when nozzle is touching the Bed and it is turned 360 degrees so the nozzle is moving away from the bed. How far did the nozzle move. If the answer is 1.25mm then you have a 8mm all thread lead screw 8 x 1.25 My lead screw will move 2mm as shown in the image below on the right and the most common lead screw will move 8mm as shown in the image below on thby kc8iqw - Firmware - Marlin
I'm sure I'm missing something obvious. I've built a Frankenvinci using a RAMPS 1.6 board and respective Arduino controller (and a custom built board for endstops and extruder cooling but I digress). What I'm having an absolute fit is with the Z movement and positioning. I have this configured for Min/Max and have disable the min (letting the home sensors do their work) at the suggestion of soby kc8iqw - Firmware - Marlin