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K1 Max Switch

I am trying to understand where I mount the switch and how I am suppose to use it. The instructions say, "2) Attach switch mount to printer - this needs to be in a location that gcode can press it." But I am not sure what that means. I am new to 3D Printing.

10 comments

10 Comments

Bryan Kentner

Feb 24

Did you change your bed size, I seem to have an issue with printhead smacking into, and moving, the limit switch. I installed in the back right corner, with the supplied stl k1 adapter.

Bill

Feb 24

Replying to

Is this a K1 or a K1 Max? The two profiles I provided work perfectly for both my K1 and K1 Max... so I don't know what would be different between the two.

With that said, you can easily adjust the switch position in the Start, End and Tool Change gcode sections... so, only a single line in all three... and in fact, they're all the same line.

The default is G0 X210 Y217 F10000 for all three on the K1... and G0 X290 Y297 F10000 for the K1 Max. How far is it pressing it... just subtract that value from the 217/297 value. Also, make sure the X is aligned with it... there is a small square nub that sticks out on the back of the extruder, which is what I was using to press the switch.

Bill

Alan

Feb 24

Replying to

The k1 max profile should be the right bed size.

You need to home your machine, then move it to x280 y280. Then slowly inch it up 1mm in each dimension until you hear the button click. That's your coordinates for the button. Subtract 3 from y for button start position.

For me it is x286 y296, y293 start position

Edited

Bill

Feb 24

Replying to

I might add, when it probes, the default button location is actually outside the normal printable space of the printer (it's in the back row where the nozzle is cleaning) so it shouldn't be going back that far.

Did something else change the printable area on the printer?

Since it is Klipper based, however, you can always just change the probing area to exclude that rear few mm. To do that, follow this guide:

https://www.klipper3d.org/Bed_Mesh.html#adaptive-meshes

Bill

Alan

Jan 24

I just got my K1 Max working with 3DChameleon actually. I put my switch on the back right corner, using the screw hole from the motor mount. That printables link Bill sent has the mount file. This is what my coordinates look like for moving to the postion to press the button: (yours might be slightly different)

G0 X284 Y293 F4000 ; <<----- EDIT THIS LINE TO SET THE INITIAL LOCATION OF THE BUTTON

Once you get it installed home your printer's X and Y, then move the extruder to x284. Then move it back on y to y290 and incrementally move it back 1mm until you hear the button click. The subtract 3 from that value and it's your button start position on Y. Mine presses at Y296 so I use Y293, for example.

You need to change the values inside the custom gcode for Start, End and Tool-Change. The values in the K1 profile are not right for the Max. In Start change where it says "wait for 27 seconds" to whatever value you need for loading the first color. Might also have to change the E value of the extruder loading directly below it too. In End just change the G4 command near the bottom right after 'continue to back out of the extruder' command. Make this number how long it takes to back out to the y adapter, in miliseconds. In Tool-Change change the G4 wait commands for unloading and loading in miliseconds, based on the timing of your setup.

Edited

Dale Thomas

Jan 24

Replying to

I really appreciate the indepth response!

wjsteele

Jan 24

Just follow the step by step guide for the K1 on the Printables page for the K1.

https://www.printables.com/model/653583-3dchameleon-mk3-installation-for-the-creality-k1-a

Bill

Alan

Jan 24

Replying to

might be helpful to add info for the K1 Max in that page about how you need to change values in Start, End AND Tool-change custom gcodes in the default profile. This is where I got confused in the process, as previously I was only using the tool change section to change values, per the instructions on the website.

wjsteele

Jan 24

Replying to

I'm pretty sure it already stated that, but I'll check.

Bill

Dale Thomas

Jan 24

Replying to

Got it. I am not sure I saw that. Thanks!