Get an MK52 clone heated bed from aliexpress. The spring steel plate also works great with an inductive probe And it's the max size that you can place, around 254*254 I believe.by Ohmarinus - General
First of all l, don't set the current to the max but slightly below. Also, fo you have cooling elements and active cooling with a fan on the drivers?by Ohmarinus - General
Won't it be more like a low-pass filter? Or like averaging out the voltage? I don't think adding a cap with a fan to increase pwm sensitivity will do that much damage.by Ohmarinus - Firmware - Marlin
Quotekulfuerst Of course I understand that my current setup is not one that was originally intended to be possible. It definitely works, though. if I make a change to one z stepper (e.g. change stepper current), both receive the signal and make the according change. This is intentional on my part as I want my z steppers to be in sync. Is there not a place in the code that I can change that allowby Ohmarinus - Firmware - Marlin
I think a lot of it is actually ABS plastic. Often reinforced with glass fiber or glass ball, whatever. I also believe more study parts are nowadays made with polycarbonate. Don't really know where you can find all of that out, I think you'll have to look per item on google. Also, inside the plastic parts is usually an indicator/logo printed, from which you can find back what blend it is by lookiby Ohmarinus - Mechanics
Quotegaetans First of all thanks. I don't understand very well. In pins_RAMPS.h I have: I moved 49 to 66: // // LCD Display input pins // #if ENABLED(NEWPANEL) #if ENABLED(REPRAP_DISCOUNT_SMART_CONTROLLER) #define BEEPER_PIN 37 #if ENABLED(CR10_STOCKDISPLAY) #define BTN_EN1 17 #define BTN_EN2by Ohmarinus - Firmware - Marlin
I think you need a voltage divider. I have made a few posts about that. It means that you connect two leads with electronics; a resistor and a diode. Also, you can make an optocoupler, I also have a post on that. But the voltage divider is easier and fine for 12v use. On mobile now but if you are interested I can send you the schematic I used later.by Ohmarinus - Controllers
QuoteOhmarinus Printed one example, and it looks like it could actually work. I don't even think that the rubber is needed between the left and right bolts. If I 'bend' the compression arm by using a spacer between the bed and the arm at the bolt points, this will cause the sides of the compression bar to curve down and logically the center of the bar will be the highest point, logically causingby Ohmarinus - General
The problem isn't vase mode. It's undefined.. It seems extrusion is pretty constant when printing a flow-calibration cube with a single wall. But the print in this video shows other issues. It does retraction fine, but there are holes in the model. This could be a whole host of problems, for example extruder issues, or maybe a bed that's a bit loose or extruder that is loose. Now I've tested mostby Ohmarinus - Printing
Quotethe_digital_dentist While you're solving chicken and egg dilemmas, here's another one to think about: Great writeup, food for thoughtby Ohmarinus - Mechanics
In a last desperate attempt I've replaced the 'G3D' A4988 driver for a TMC2209 driver. Recalibrated the steps/mm for the extruder and inverted the E axis. Printing a new piece right now to see if that makes a difference. I've also went back to an older version of Cura and tightened up the extruder idler. If that doesn't solve it I am suspecting there is something wrong with the extruder design ofby Ohmarinus - Printing
QuoteDust You need to set default_envs in your platformio.ini file to the correct build environment. In this case it should be default_envs = chitu_f103 This is what I meant Anyway, good to hear it's working.by Ohmarinus - Firmware - Marlin
Did you select the correct board in your platformio config file?by Ohmarinus - Firmware - Marlin
QuoteRoberts_Clif QuoteOhmarinus QuoteRoberts_Clif It appears that the Vase model is a solid is it 3D Printed using Spiralize Outer Contour Yep, it is printed with that option since the spiralize outer contour is a sure way to get no vertical seams. Have you tried to print with multiple outer shell walls using infill prints after perimeters. Well, it prints find on my Delta, so I kinda expectby Ohmarinus - Printing
QuoteRoberts_Clif It appears that the Vase model is a solid is it 3D Printed using Spiralize Outer Contour Yep, it is printed with that option since the spiralize outer contour is a sure way to get no vertical seams.by Ohmarinus - Printing
QuoteRoberts_Clif Then could it be quite possible that the Vase with detached bottom model may be in need repair... I could not find anything wrong with the vase. Find the STL attached.by Ohmarinus - Printing
QuoteRoberts_Clif Calibrating the newer versions Cura is one reason I still use the Older Cura version 15.04.6, after over three years adjusting the many setting of Cura finally working more with newer versions. Though still mostly 3D Print using the 15.04.6 as it has worked so well for me. An recently found that Creality Slicer 1.2.3 works with Cura 15.04.6 profiles. Do not know the advantagesby Ohmarinus - Printing
Heyhey, so I've calibrated my DIY Prusa MK2S/MK3S clone and it's all perfectly calibrated, movement, extrusion, etc. It works really well so far, but I am having some really weird issue. Despite having extrusion calibrated with the exact steps/mm and done a flow calibration after, some parts still don't want to print well. I also did a PID tune on both the bed and hotend and retraction is only 1mby Ohmarinus - Printing
Very interesting. I bought an MK52 bed with flexible steel sheet and two PEI sheets to DIY glue on them but in all honestly the PLA almost fuses with the PEI. Sometimes pulling off the first or first few layers from the bottom of the print. I have tried rubbing my somewhat unclean hands over the PEI surface to make it less sticky (skin always has a certain amount of lipids and dead skin cells onby Ohmarinus - Printing
Hi, so I've finally gotten around to playing with a couple of PEI sheets that I ordered over a year ago. Reading about it I realized that most people see it as the holy grail of surfaces to print on. I wonder how many of those people have actually used a PEI sheet because in my experiences it just wants to fuse with the print and it doesn't come off even after cooling down the spring steel sheetby Ohmarinus - Printing
QuoteDavid J Has anyone else started to get dodgy notifications from Thingiverse in the past week or so? I have seen comments on my designs along the lines of "I am very lonely and want to meet you..." or similar (many worse). They now seem to be wide open to rogue, malicious postings. I have had to turn off all email notifications from this site. I have gone from "It's an OK site", to "It's nby Ohmarinus - General
Sounds like 6mm will still be enough. My personal experience with belts is that you want to go wider when the belts get really long. But comparing this to a CoreXY setup which gets very long belt paths even when the build volume only increases a little bit, I think you'll be safe with 6mm still. My main concern would be belt stretch. Also keep in mind, wider belts have more friction, taxing yourby Ohmarinus - Mechanics
QuoteDust A lot of controller have external pull up resistors on the board, but not all. True, so with a board that already has external pull up resistors, does that mean the setting has zero influence?by Ohmarinus - General
It's really easy. I have made a pen plotter with my old ramps board for example using Marlin. It even has an LCD. Marlin handles the curves extremely well nowadays.by Ohmarinus - Firmware - Marlin
How about share your config. It's hard to sniff what the issue is without thisby Ohmarinus - Firmware - Marlin
I even don't enable pullups and they work fine without. Never had a problem. I'm shorting Sig to GND since 2012.by Ohmarinus - General
QuoteDust I agree seems to be a spam bot. Please nuke them! Aaaaand it's goneby Ohmarinus - Reprappers
I personally prefer the SKR 1.4's board layout for wire management and stepper cooling ease. And it's smaller. The GTR looks bigger and it mostly meant for multimaterial machines. Beware that every extra extruder creates a ton of extra work to get working correctly. Think wisely. On top of that the SKR 1.4 is just wayyyyyyyyyy cheaper. To me it's a no-brainer. SKR 1.4 with 5x TMC2209 drivers costby Ohmarinus - Controllers
QuoteShank man Quotexenialouna at the point when the current draw surpasses what the flexibly can deal with and in the event that it has security highlight it will closure with an over-burden. To sum this all up it "crowbars" I suspect xenialouna to be a spam account judging by the previous post the person edited.by Ohmarinus - Reprappers
Before we continue, where exactly did the magic smoke come from?by Ohmarinus - General