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There’s a great (and short) video about encryption back-doors by CGP Grey: “Should all locks have keys? Phones, Castles, Encryption, and You.” (Piped link).
“No matter how much we might wish it, there’s no way to build a digital lock that only angels can open and demons cannot. Anyone saying otherwise is either ignorant of the mathematics or less of an angel than they appear.”
EDIT: I still hate you Piped bot.
What’s your connection to the author?
Awesome, glad to hear it!
When you’re ready to try printing again I agree with the suggestions to:
- lower the bed temp to ~60c
- avoid using glue sticks or similar since it shouldn’t be necessary with PLA, and will just add another variable
- keep working through first layer print tests
I’m surprised you’re having adhesion problems with a PEI build plate. When I swapped to PEI it was like magic; filament effortlessly sticks and finished prints pop off from a gentle flex. There isn’t like a plastic shipping cover on it or something is there?
Anyway, good luck with the rest of your troubleshooting – I’m sure you’ll eventually get it dialed in :)
I have no personal experience with a failed firmware update but a quick search returned https://forum.sovol3d.com/t/sv06-bad-flash-probably-needs-bootloader/1452 and “solved” = https://forum.sovol3d.com/t/sv06-mainboard-brick-after-updating-sovol-firmware/862/52
Seems like for some people it was ultimately the sd card being faulty that was causing the failure, especially if it was the sd card included with the printer.
Good luck!
Are you saying the surface in the picture is the one that touches the bed? If that’s the case it should be nearly perfectly flat and smooth(ish depending on bed texture). If that’s the orientation it prints in there’s still an issue of distance and possibly belt tension or something else because of those waves and deep grooves. There’s a bunch of different methods to level a bed but ultimately you want the nozzle to slightly squish the filament it is putting down, in the picture it looks like it might not be.
As for the bed being clean, if you haven’t yet I’d definitely spray some isopropyl alcohol and wipe it off, taking care not to touch the bed with your hands at all – oil from your skin will easily cause adhesion issues.
Larger prints in general, and especially if there’s temperature variance while printing (drafts), can start to pull off the bed as the material contracts. You may need to add a brim in your slicer to help keep it welded down. When it’s necessary to use one will be a learning experience as you get used to your particular printer and environment.
What kind of filament is that printed with and are you concerned about it failing over time? Especially if there’s spinning disks in there I’d be paranoid as hell about it falling.