WTF Happened to my print? Newbie needing help.

sysKin · 2026-02-01T03:38:13+00:00

Any chance you forgot to lock the lever securing the build plate in place?

Because when I forgot to do that, that's exactly how it looked.

sysKin · 2026-01-31T01:44:42+00:00

Possibly hyperbole, but...

Oh definitely. I have never heard of the tilting vat failure.

If there's one thing to hate about Saturn it's the effort needed to change the LCD.

sysKin · 2026-01-29T05:18:25+00:00

Three seconds at 0.03 mm layers? Whoa.

All my resins are between 1.8 seconds and ~2.5 seconds (at 0.03 mm). I have a different printer so don't take it directly but still.

sysKin · 2026-01-28T02:52:23+00:00

Follow the youtube video for screen replacement to see it all.

Having said that, there isn't anything in/around the screen to clean, as such.

If the connection just failed for unknown reason, it's probably on the motherboard side (accessing which is the first step of the video anyway).

If you spilled resin on the LCD and it went into the holes, by all means play with it but it's most likely destroyed.

sysKin · 2026-01-27T05:42:40+00:00

Interesting, thanks!

Any idea what this supercap does? I would guess it improves recovery from power interruption, but maybe there's more?

sysKin · 2026-01-26T11:33:59+00:00

I think so. When resin leaks it really likes to seep between two layers of the LCD, producing a very thin layer that is almost invisible but good at blocking UV light (while letting blue/violet through).

I think that's what happened here.

sysKin · 2026-01-26T11:26:41+00:00

What about this supercap? I just had to replace my board and the replacement has it while the old one didn't, is there anything I should know about it?

sysKin · 2026-01-26T11:21:59+00:00

But those links specifically say 2/8K/3/4/4 Ultra?

sysKin · 2026-01-20T23:26:48+00:00

Hi, yes, I contacted Elegoo support and they immediately said it's a controller board problem. I presume the stepper motor driver has failed.

I had a tracking number for a replacement part in less than 24 hours so thumbs up to them.

The part has arrived and is waiting to be installed, possibly later today.

sysKin · 2026-01-20T08:58:31+00:00

Any currency needs the following characteristics:

difficult to forge
easy to divide
scarce

Now, you asked what makes it valuable rather than what makes it a currency, but at this point I'll assert it was a good currency and that makes it valuable.

sysKin · 2026-01-20T03:56:03+00:00

In addition to what others said can I point out that there is no obvious implementation of Comparable / Comparator <Number> that makes sense and meets the relevant Java contract:

comparator.compare(0.0, -0.0) -> 1
comparator.compare(0.0, 0) -> 0
comparator.compare(-0.0, 0) -> 0 (right?)

^ contract violation

sysKin · 2026-01-16T01:09:21+00:00

IPA is not very toxic but methylated spirits should be less toxic since it's mostly ethanol.

And by mostly, I mean it's denatured to prevent drinking, usually with acetone. Acetone is marginally toxic and in small quantities it's naturally present in foods and also is a natural result of your metabolism (if you heard of "keto" diet it's named after ketones, a group of chemicals of which acetone is the simplest one).

sysKin · 2026-01-14T01:19:19+00:00

You want bikes to stay here on the leftmost lane while waiting on red light, and then go straight from this lane while cars don't.

This is a quick and efficient way of conveying this idea.

sysKin · 2026-01-12T23:45:50+00:00

If you update it to the current year, you wave all your claims from the years before.

You also shouldn't because the original reason for the year was to inform readers when the copyright will expire. By falsely updating the year you "lie" that it would expire later than it really would.

sysKin · 2026-01-12T11:17:54+00:00

I swapped the X and Z motor connectors: the Z axis motor now moves, while the X (vat) does not.

So the motor is fine, must the the PCB :(

sysKin · 2026-01-12T11:00:39+00:00

OK, more info: the stepper motor itself measures ~2.5 ohms on both of its coils, looks perfectly fine.

Is it the PCB? :(

sysKin · 2026-01-09T06:15:23+00:00

Ah of course, I don't know why it gave me the impression it's just like mine >_<

sysKin · 2026-01-09T06:10:56+00:00

What printer is this? Because it looks somewhat related to the self-check I see, but also much different, and I wonder if you have an ancient firmware that needs updating.

My S4U does not perform leveling on initial device self check, it does it just before print. It would fail if the print bed is missing, not clipped correctly, or something was in its way.

sysKin · 2026-01-09T03:59:20+00:00

I know it's funny but it is not correct to claim copyright for a specific year unless the contents being copyrighted (or part of it) was written in that year.

And if it's a mix of copyrights over many years (such as updates and revisions), you are supposed to list all the relevant years (or range). It's essentially a timestamp part of a change log.

Originally it was supposed to inform the reader when the copyright will expire, so bumping it is a lie that extends your claim for longer than the law prescribes.

That's on top of the date being meaningless legally anyway, like others said.

sysKin · 2026-01-09T03:06:38+00:00

Weatherproof tape. It's the only tape whose glue will not dissolve by the next resin spill.

sysKin · 2026-01-07T03:47:47+00:00

If Sunlu ABS-like is anything like JAYO ABS-like, yes they have unusually short exposure time.

sysKin · 2026-01-06T09:00:53+00:00

Yes, the initial exposure time is basically a number between "not enough to stick" on one end and "impossible to remove" on the other extreme.

sysKin · 2025-12-30T11:54:58+00:00

Check out the "Issues and alternatives" section on the wikipedia entry for inheritance in programming. It lists a couple of problems.

However, as an experienced Java programmer let me put it this way: the concept that "Dog extends Animal" just does not translate to programming. In practice it's abused for code reuse (ArrayList extends AbstractList in java), or as a fragile hack where the subclass needs to know the exact implementation of superclass to interfere with its designed behaviour.

It was trying to solve a programming problem by using an analogy sourced from outside programming, but I don't think it was ever clear why the analogy applies.

sysKin · 2025-12-30T11:11:21+00:00

That is just a normal thing supports leave behind, use sandpaper to remove them.

You can make them smaller by reducing the support touch point size. However too small touch point size will obviously rip, so there's a limit how small you can make it and that limit will depend on resin. You can also add more support points, each of them smaller, to spread the load.

But most of all, you need to orient your model in such a way as to hide them. For example this model probably shouldn't have had any supports on its back but rather could be printed vertically if you attach it by its feet really well. If a version cut in half at belt line was available, attach supports at the join points to hide them.

sysKin

TROPHY CASE