I've Gone and Done Something Mental

[AndersK]

Turn the bed down to max spring tension, adjust Z limit switch then home again.
Continue until nozzle is about 1-2 mm above bed then do another levelling and you should be all good

 

[Parm]

Ok, we have some progress. In checking this all for the umpteenth time I’ve noticed the s axis limit switch bracket was loose. This is now tight at the lowest position. Bed has been auto home, levelled. Then double checked

ive got a print going and it all seems to be fine now.

Thanks for your help folks but this time it looks like operator error during assembly and not doing up the fixings up tight

 

[Bladevane]

@Parm I'm not sure but it appears (to me) that the front left hand corner of your print surface is not touching the heated bed. It's as if the heated bed is distorted and therefore not in contact with the print surface. My printer has a Z adjustment which can be seen in the photo. (By the way the print head is not in the Home position, hence the gap between the Z adjustment screw and the limit switch.)

 

[Parm]

Hi @Bladevane as far as I can tell it all seems to be fine. The current print is fully adhered to the bed at all points

on the Ender 3 there are no adjustments as you suggest, at least none that I’m a water off

also, see my post above. The Z axis switch wasn’t fully tightened during assembly. My fault

 

[Bladevane]

Enjoy the sweet feeling of success - while it lasts!!

 

[Parm]

Enjoy the sweet feeling of success - while it lasts!!

Don’t say that. I need this to work all the time without too much fuss

 

[Parm]

And we have success

Thanks for your help folks

This was perfectly adhered to the bed

 

[ajlelectronics]

It would appear that the Z axis switch needs to be higher. Even at factory setting, the bed fouls on the rear servo and the bed’s heater wiring. I have set my switch as follows:

you can’t really see the problem in the photo, but get your eyes to that level and run the bed back and forth.

 

[ChrisBailey]

The instructions are a bit vague, the picture shows the bottom of the switch mount and the bottom of the beam it connects to, flush. This gives lots of room to move the switch down later.
I put the switch at its lowest position and that was too low and the bed hit the nozzle.

There should be a note on adjusting it really, it has a big impact on print adhesion.

 

[Parm]

Currently my switch is at the lowest position. All seems to be well and the second print is going very good

mom loathe to move now that it seems to be working ?

 

[Parm]

It would appear that the Z axis switch needs to be higher. Even at factory setting, the bed fouls on the rear servo and the bed’s heater wiring. I have set my switch as follows:

View attachment 302846

you can’t really see the problem in the photo, but get your eyes to that level and run the bed back and forth.

View attachment 302848

On the cables I found the under bed cables weren’t routed correctly. At assembly I corrected this by dismantling a few things at the bottom and rerouting the bundle of cables.

no issues to report

 

[Parm]

The instructions are a bit vague, the picture shows the bottom of the switch mount and the bottom of the beam it connects to, flush. This gives lots of room to move the switch down later.
I put the switch at its lowest position and that was too low and the bed hit the nozzle.

There should be a note on adjusting it really, it has a big impact on print adhesion.

Agreed, they are very clear on assembly but could be better on set up, calibration and initial use

im not as tech savvy as you folk and I’ve struggled a little to be fair

Slowly getting the hang of it with help

 

[ajlelectronics]

 

[MattF]

That's looking better.

 

[bigegg]

I've not quoted anyone, as it's a problem mentioned by several people:

I had issues with mine not staying "level" on prints.
It turn out to be a miniscule amount of flex+twist in the frame.(anet a8, so very much a "hackalot" machine)
I bolted it down to a piece of 38mm worktop, and it was much improved.

 

[Pete.]

If you move the homing switch higher then you might find that you need to pack out the springs with washers to maintain spring pressure. I moved mine lower a little by twisting off the stop lug with a pair of pliers.

 

[ajlelectronics]

If you move the homing switch higher then you might find that you need to pack out the springs with washers to maintain spring pressure. I moved mine lower a little by twisting off the stop lug with a pair of pliers.

That then causes the bed to foul the rear servo, so I had to go the other way.

Some craft glue spread on the bed before heating seems to be helping my adhesion issue.

 

[Pete.]

That then causes the bed to foul the rear servo, so I had to go the other way.

Some craft glue spread on the bed before heating seems to be helping my adhesion issue.

If your bed is hitting the y-axis stepper you have the limit switch set too far back. Move it forwards.

 

[ajlelectronics]

If your bed is hitting the y-axis stepper you have the limit switch set too far back. Move it forwards.

It is some distance. Also the heating element wiring is a long resined lump underneath, that fouls too if the Z limit is lowered.

 

[Pete.]

It is some distance. Also the heating element wiring is a long resined lump underneath, that fouls too if the Z limit is lowered.

Got a photo? The element strain relief on mine is a good inch away from anything to hit. The bed stops agains the limit switch a good 1/4" from the stepper.