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Clean your bed surface with 70% isopropyl alcohol or above,
If this does not work then raise the bed temp to 100C for a couple minutes clean and try again.

Hello Sam from Boston; I assume anyway.

I see you posted some of the information required to trouble shoot though would like more information.
At what speed are you printing.
What slicer are you...

Great Work.

Thank You.

If you ever need extra help would be glad to do what ever will make the forum a better place.
Currently in the process of creating a CoreXY, will be posting all documentation for anyone to build a...

Thank You!!

Have been hoping someone would take the initiative to clean up this 3D Printer forum. Need any help ask me, I would be glad to help you clean up the forum ....

Of course you can set the fan speed in many placed in G-Code, even though you tell fan to spin 100% the sliced can quickly change it back to 50%
Open the G-Code that will not allow you to set G-Code...

Not sure I understand what you are doing Code below


M106 P0 S255 sets the fan to 100%
M106 P0 S127 sets the fan to 50%

Like wise for second fan

M106 P1 S255 sets the second fan to 100% ...

I have had problems like this in the past, though I was lucky it only rebooted my computer.
Can not explain exactly why this happens. Most likely a voltage differential or a floating ground.
...

The SD Card need to be formatted FAT the SD card should be of good quality the cards that comes with the units sometime do not work.
SD Card should be 4GB or smaller formatted in FAT


(FAT in...

Sounds like you are doing every thing correctly.
The Newest Marlin 2.0.9.2 has a function " Configuration > Advanced Settings > Probe Offsets > Z-Probe Wizard " To Set your Probe offset to get that...

Starting out the extruder will not function if the temperature is below 170C.
The extruder will not extrude if Hot-End is clogged.

You can test with no filament heat the hotend to 180C using...

If you could post a photo or two maybe we could help you solve your problem.

I normally print this Frog

For a long time the only slicer I used was Cura 15.04.6.

After finding Prusaslicer I rarely use anything else

17505

Using Prusaslicer I can Add a modifier to...

Inspected your G-Code Frog.gcode to find in the code what could cause your problem.
I printed Your G-code without any modifications other that what I call draft mode (full Speed) below is the...

OK I see.

Post STL along with your sliced G-Code, will take a look too see what is going on.

If your problem occurs at the same location every time then you may have problems with your Z-Axis sticking.

As a 3D Printer Marlin user for 4 years I started with this Marlin REV: 06.13.16, version 1.1.0-RC6-Bugfix.

I have flashed most Marlin 1.x.x versions stopping at Marlin 1.1.9bf for the longest...

There is many you-tube videos as I started I too was a newbie, using You tube videos.
I found one piece at a time learning as I built the attached model below.

If I can do this anyone can..
...

It appears that the Z-End-stop / Proximity sensor is not working correctly.

I would connect printer to USB to your computer, using a terminal program like Pronterface an send M119 to get the...

Think I see what you did.

Posted Another link

17482

I end up with a .BIN file
What do you have on your SD card.

Copy bin file to SD card an boot this should change the name to FIRMWARE
As your printer is as you said dead will re-post Bruse19.zip...

This is a good you tube video for showing how to uploaded firmware into your 3d printer.

Bruce19 it is in a folder called Bruce19 on my hard drive, and Now it is also a link on my google Drive.

Now this is what I do When I get a working any thing I duplicate and archive creating a...

Here are a few things you can try.
Set seam to random
Set smaller retract distance
Print slower

Or

Try a different slicer.

No you do not have to.

It is only a suggestion, when you get your current firmware working real good.An want to make tuning Z-Offset simpler.