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Both of them with 3 screw balancing.
The bed i use at the moment is too thin and bending not leveling. It is like a bowl. Pla does not stick to the center of the bed despite autobed leveling.
And carriage is also too thin so it bends too when turning screws.
It took few weeks for me to find the problem
by
serdar415
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Prusa i3 and variants
i have someone who can cut them free from remaining plates. That is why i ask for.
I found this
by
serdar415
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Prusa i3 and variants
I have mistakenly ordered e3d v6 clone bowden tipe instead of a direct drive for my prısa i3
I removed the tap and cut the tube from the top and leave it inside. Top of the tube is matching the filament hole in the wade extruder.
It is working there is no problem
by
serdar415
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Prusa i3 and variants
Hello
I read digital_dentists blog about 3 screw bed leveling vs 4 screw.
Exactly i have a potato chip shaped bed.
My bed is 0.8mm thick and bending easly. I want to laser cut a 3.5mm thick 3 screw balanced bed and carrier. I can design it in thinkercad but not sure what file format needed for laser cut machines. Has anyone have a good design file of a 3 screw sturdy bed carrier and bed for la
by
serdar415
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Prusa i3 and variants
for autobed leveling you can adjust max and min bed boundaries for leveling
`MESH_MIN_X`
`MESH_MAX_X`
`MESH_MIN_Y`
`MESH_MAX_Y`
adjust them in config.h
Your board is competable with mks gen 1.4
maybe usb drivers will solve the communication problem
there is a driver in this page
MKS Gen USB Driver Chip FT232RL,you can get files from ftdichip to setup driver File:Ftdi-x86.zip.
Fir
by
serdar415
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Prusa i3 and variants
you should search and control "X_MAXLENGTH" constant in marlin. It cant be bigger than bed size.
The problem is not the bed size. It is the definition of maximum movement allowed by Marlin on x plane. It is bigger than bed size.
try x and y min position to 0
You can download original marlin 1.1.8 here
by
serdar415
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Prusa i3 and variants
use a good short usb cable to upload firmware
long and attached cables causes communication problems
by
serdar415
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Prusa i3 and variants
I had the same problem few days ago with my prusa i3.
It may be the bed holes is not aligned with the y carriage holes so it is bending.
I learned maual bed level compansation and it is working now.
Chek this:
by
serdar415
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Printing
calculate the motor vref and double it for z stepper
(like if x stepper 350mV z stepper 700mV)
if you have an avo meter chek youtube for "how to adjust stepper current ramps" ther are many good videos teaching how to do it
by
serdar415
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Prusa i3 and variants
Are two z motors connected to same stepper?
Did you adjust the voltage for two motors?
by
serdar415
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Prusa i3 and variants
Ok i am using Marlin 1.1.8
20x20cm bed without heater
everything works fine but bed leveling
I turned on the manual bed leveling in Marlin
I defined 5x5 grid leveling
I turned on eeprom settings in Marlin
I see all the menus on lcd
I started bed leveling, ı adjusted 5x5 (25) points. I hearded the beeep from lcd. I save them to eeprom.
On menu bed leveing is "on"
I started to print bed level
by
serdar415
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Prusa i3 and variants
Thank you. I didnt know that i can make manual mesh leveling without a proximity sensor.
I ll share the results.
by
serdar415
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Prusa i3 and variants
I am using marlin
The bed is 0.8mm stainless steel and looks like it is flat.
I have blue painters tape on it. I cant find why the center of the bed is lower than the edges.
by
serdar415
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Prusa i3 and variants
I completed building prusa i3 rework. I dont have an inductive proximity sensor.
I calibrate the bed manualy.
I have calibrated four corners of the bed with paper. The middle of the bed is lower then the corners.
When i try to print something the parts close to edges are good but the center is too far to nozzle and the filamen does not stick to bed.
is there anything i can do without a proximity
by
serdar415
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Prusa i3 and variants
Thanks. I found the problem.
The acceleration rate was 3000 in the firmware. I decreased it to 300 and it works fine now.
by
serdar415
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Prusa i3 and variants
Hi
I have built a prusa i3 rework and start to test motors. x y z motors and end stops working fine.
The extruder motor has a problem
I command extruder motor to move +10 and the motor moves forward and backward and does not turn.
Cable order should be fine. I changed the step driver and it is still not functioning properly.
What may be the problem?
by
serdar415
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Prusa i3 and variants
Yes it takes constant amount of force around the print area.
I printed parts which took 5 hours of print and there wasnt any problem. I chek the motors and they dont get hot.
Does the motors pull more current when the extruder movement obstructed by the previously printed parts? Instant current increase might heat the steppers and caused layer shift?
Printer is working fine at the moment.
I c
by
serdar415
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CoreXY Machines
These are the photos.
The printer started to print normal today.
The steppers get hot or something i think.
by
serdar415
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CoreXY Machines
Hi i have updated my slicr software and i tried to print multiple parts at once. Software was printing every part in same layer in old version. But the new version started to print every part individualy. After printing few parts the hotend and fan duct started to crash other parts and all axises forced.
After that i started printing again. The parts on the upper left corner and lower right corn
by
serdar415
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CoreXY Machines
Your bed or y axis might be bent?
Marlin calculates the bed height differences and adjust the z axis for it. But the result is not as expected.
Is it possible that you have sttuctural mechanical problem?
Like not orthagonal axis?(y z axis angulation)
by
serdar415
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Printing
The most reliable way to test whether or not your printer is extruding enough plastic is to print a simple 20mm tall cube with at least 3 perimeter outlines. At the top of the cube, check to see if the 3 perimeters are strongly bonded together or not. If there are gaps between the 3 perimeters, then you are under-extruding.
I see that the gap is seen after chaging movement axis. Maybe it is to
by
serdar415
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Printing
There is an adjustment for thin wall behavior and gap fill in slicer software. Did you try to turn them on?
by
serdar415
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Printing
I checked the holes and found the problem. The x carriage bearing beds are nearly 1.5mm more apart than the holes in the x motor and idler.
I searched thingeverse and found an alternative x carriage. The designer put two alternatives. The first one worked for me. Now x axis moves
perfectly smooth.
I used this one:
Thanks for your help.
by
serdar415
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Prusa i3 and variants
Thank you. Will those parts will be in alignment with z motor holders? Should i change them as well?
by
serdar415
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Prusa i3 and variants
Hello I am building a Prusa i3 rework for my brother. I printed the parts in my core XY printer. I used the parts listed here:
Everything fit perfectly in y axis but I have a problem with X carriage, motor holder and idler.
The carriage moves smoothly 1/3 middle part of the rods but it has friction as it get close to motor holder and idler. The rods are getting closer at the end.
The holes for
by
serdar415
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Prusa i3 and variants
On left side there is underextrusion and on right side there is overextrusion.
Did you manualy adjust the bed level?
Did you properly adjusted z offset?
try printing this bed level calibration test object
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serdar415
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Printing
I had a similar problem. I recalubrated the extruder. I marked 10cm of flament from entrance hole of extruder. Than i extruded 10cm of flament with software interface. Then i measured the mark on flament. It was 1cm away from entrance. I chek the steps of extruder motor from marlun on lcd. It was 100. Recalculated the steps
100x100=90xX
X=111.1
I adjust the extruder motor steps to 111 on lcd. Sa
by
serdar415
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Printing
During 3 hours if printing, there wasn't any twisting on flament.
Thanks for your help.
by
serdar415
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Printing
That makes things worse I tried. I think the previous cheap flament had some problem.
The new " pla plus "spool stays stable for an hour. I ll try printing a 3 hour session tomorrow.
by
serdar415
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Printing
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