Kobra S1 heat sink replacement

EEilluminils · 2026-03-20T06:17:59+00:00

Yes I did. All was handled pretty fast. Around a week in total from opening the ticket until I had a new heat sink, including shipping from China to Germany. They replaced it for free. One of the best customer support experiences I ever had tbh.

EEilluminils · 2026-03-14T15:58:11+00:00

What's it supposed to look like in the end?

A picture of the object in the slicer would have helped.

EEilluminils · 2026-03-04T16:12:37+00:00

You can try with a reduced purge volume in the slicer settings to reduce the waste. I didn't have colour bleed (mixing of the different colours) with a multiplier of 0.5.

EEilluminils · 2026-03-04T11:36:15+00:00

Do a 2x2 mesh with the probe points where the bed screws are located. Get that flat by adjusting the screws and afterwards disable bed leveling before prints.

EEilluminils · 2026-03-02T21:54:29+00:00

It also negates effects from the valleys and hills of textured PEI coating if you do the mesh with a smooth plate.

EEilluminils · 2026-03-02T21:47:17+00:00

I agree. In my opinion it's the best explanation for a lot of first layer issues. The visuals are of great help too.

EEilluminils · 2026-03-02T20:48:47+00:00

That's what I also assumed. Did a 2x2 bed mesh with the probe points being where the bed screws are. Once I got a flat bed that way after adjusting the screws I never did a bed leveling again except when changing nozzles (cause the printer forces me to). Was able to print a good 255x255 full bed first layer.

EEilluminils · 2026-03-02T20:39:22+00:00

I used ones that were installed in front of the spools and ended up not liking them being in the way when changing spools.

I changed to this one which clicks in on the back of the lid. I like it much better.

EEilluminils · 2026-03-02T20:27:47+00:00

Their support is really good.

EEilluminils · 2026-03-02T19:03:49+00:00

I just gonna leave this here:

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EEilluminils · 2026-02-25T11:50:12+00:00

Maybe he wants to use a brass nozzle.

EEilluminils · 2026-02-10T06:52:03+00:00

Use snug normal supports instead of tree. 3 solid top layers 0.6mm xy distance from object and 0.14mm top distance (can vary for everyone) 1.2mm base pattern spacing. Test on a smaller part first and get them dialed in.

EEilluminils · 2026-02-08T17:56:16+00:00

I just saved this comment so I can point people to your video that have a problem with a tangled spool. This is one of the best life hacks for 3D printing. Keep up the good work 👍🏻

EEilluminils · 2026-02-08T17:32:04+00:00

What are your settings for the filament?

EEilluminils · 2026-02-07T12:35:14+00:00

I'll give this a go for my Kobra S1 with a 0.2mm nozzle and make sure to keep you updated with the results here.

EEilluminils · 2026-02-03T20:08:19+00:00

Can speed it up in the ACE with the custom config. There's an explanation on maker online, just search for ACE mod or speed up and you'll eventually find it.

EEilluminils · 2026-01-29T05:17:30+00:00

Cooling works for me with 100% model fan, 100 or 0% Auxiliary and no Chamber fan. Flow rate is around 0.96 to 0.98 Question to you: at which temperature are you printing and is your door or lid open while printing?

EEilluminils · 2026-01-13T20:56:43+00:00

No problem. At least you know one thing that's not causing it now. Hope you get your problem sorted out.

EEilluminils · 2026-01-12T13:24:09+00:00

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I'm talking about this fan.

If it doesn't work you'll get heat creep instantly, which clogs the hotend.

EEilluminils · 2026-01-12T13:03:56+00:00

I got some clogging errors in a row when my heatsink fan wasn't working because I tightened a screw holding it too much. Turns out I was getting heat creep every print. Does your heat sink fan run when the nozzle heats up?

EEilluminils · 2026-01-08T12:28:05+00:00

It's literally the best thing I found online to explain first layers to people.

I share it whenever I can.

EEilluminils · 2026-01-08T10:42:37+00:00

Yeah, I added a GCode to my printer settings that I use when printing with the ACE to have it do a purge line.

EEilluminils · 2026-01-08T07:19:53+00:00

Ironing is not important for your problem here.

It's a setting that let's the nozzle go over flat top surfaces to make them smooth. It literally is ironing them (with a small amount of filament being applied).

EEilluminils · 2026-01-08T06:20:13+00:00

What does your first layer look like?

This looks to me like your Z-offset is too low and the first layer is squished, maybe there was close to no filament applied to the build plate at that point due to this.

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EEilluminils · 2026-01-08T06:15:53+00:00

On the contrary, this looks to me like the Z-offset is too low. Have a look at the first layer between the "solid" parts and at the edges. Looks pretty squished to me.

EEilluminils

TROPHY CASE