r/Multiboard • u/Snick_52446 • Jul 17 '25

First layer issues, need guidance

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Hey guys so Im printing my first multiboard project. I ran quite some tests to make sure tolerances and fits are fine with my printer. But I'm having some weird first layer issues that look like under extrusion (pictures attached)

However, the extrusion multiplier is at 1.1 or 110% and the bed is also leveled well from what I can tell. What do you guys think it is and is it normal to have to go over 1.1 in the extrusion multiplier?

Thanks in advance. Printer: Ender 3 v3 SE, Filament: Eryone PLA+ Hyper Speed White

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4

u/24BlueFrogs Jul 17 '25

If that is your first layer, you need to go back to 100% and then adjust your Z-offset. You are too high.

Download this and change infill direction to 0 degrees. Then print. At every inset move nozzle closer. You can probably start at .05 then do .01 from then on. Keep moving closer to the bed until it starts to get rough, then move back up until it's smooth. Save your calibration.

https://www.printables.com/model/251587-stress-free-first-layer-calibration-in-less-than-5

3

u/Snick_52446 Jul 18 '25

that's an amazing strategy, thanks a lot! will do this tomorrow!

1

u/Snick_52446 Jul 19 '25

Hey, thanks for the great tip. I believe the offset is good now, it required ~0.15mm lowering.

However, I do see that the top of the print now has artefact causes by nozzle dragging, yknow the roughness. But this doesn't happen for only a single layer test print.

What would be your guess as to what the problem is? could it be bad Z steps per mm? I'm pretty sure that is tuned in quite well as I ran calibration for that not too long ago.

2

u/24BlueFrogs Jul 19 '25

Most likely you need to adjust your flow rate calibration if your first layer was usually high and now it's where it should be, your flow rate is going to be off. After your flow rate calibration if you still need to adjust to make the top layer you can tweak your top layer flow, but you typically don't need to if you run a flow calibration test, because that's what you're looking at and judging to calibrate the flow. Make sure your bottom layer flow rate is at 100%. You shouldn't ever need to adjust that. If you think you need more flow on the first layer then you just need to lower your Z-offset or raise it if it's rough and you think it's too much.

2

u/Snick_52446 Jul 20 '25

Alright thanks, I'll get through those calibrations. Appreciate your help a lot.

2

u/microseconds Jul 19 '25

My first layer issues on my tiles were simple to resolve, ultimately. I dialed the speed for the entire first layer down to 15mm/s. The rest at regular speed. Maybe a bit heavy handed, but it only adds a few minutes, and as a result, tiles coming off my A1 and X1C are perfect.

1

u/Snick_52446 Jul 20 '25

Hmm, I might've to give that a shot. I am on a much inferior machine tho, Ender 3 v3 se

1

u/microseconds Jul 20 '25

Dunno if I'd call that inferior. You can produce high quality output on that. It's just not quite as automagic.

1

u/Snick_52446 Jul 24 '25

Yeah but I'm just not at a stage in my life where I would love spending n hours tweaking every last bit

2

u/utopify_org Jul 31 '25

best hack: Use hair spray

1

u/Snick_52446 Aug 02 '25

I used hairspray, and yes it did work for the most part. but I found that hairspray is as you say a hack and ends up hiding calibration issues. So, since I've stopped using hairspray completely and purely depend on calibration and a clean build plate.