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Joined 1 year ago
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Cake day: June 23rd, 2023

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  • rsync was written by one of the original Samba developers. I wonder if Tridge and co have any idea about how to shuffle data from A to B safely?

    CIFS/SMB will only indicate received and not received and written. This is unlikely to be an issue.

    I would start by proving that my network works properly, especially that dodgy cable with only wires 1,2,3,7 connected - because that’s all 100Mb/s needs, or the solid core cable that runs for 150m with plugs at each end instead of sockets and drop leads.


  • “Is this a common issue with samba” - no.

    Samba shuffles rather a lot of data, quite happily. You have not given us an exhaustive description of the shoddy wiring, dodgy switches and wonky configuration that makes up your network. If it was perfect, you would not be posting here.

    There is one snag with CIFS (Samba follows MS’s standards and ironically, I think that CIFS is now renamed back to SMB) that I am aware of, so SMB … snag: SMB will indicate that a chunk of data has been received successfully but not that it has been written to disc successfully. NFS will notify that a chunk of data has been written to disc.

    The difference is subtle but if there is not a battery backed RAID involved then SMB/CIFS can lose data if the system restarts part way through a write.

    Your issue is probably hardware related. Test your network with say iperf3. Have a look at network stats. Don’t rely on cargo cult bollocks - do some investigations. Nowadays we have nearly all the tools as open source to do the entire job - we did not have that 30 years ago. Grab wireshark, nmap, mtr and the rest and get nerdy (or hire me to do it - don’t do that please!)


  • If I give you a free beer, you have one beer. If I give you the recipe, you can make your own beer. You do have to make your own open source beer or you can hire someone to do it for you or perhaps take you through the steps a few times until you’ve got it. With luck there will be a community of open source beer brewers with whom you can interact and improve those recipes.

    Free software is free until it isn’t! The illicit drugs industry works in a similar way (the first hit is for free).





  • Plus humidity is bad for your filament.

    I keep on hearing this but it does not check out for me.

    I have a Prusa 3S+, self assembled. I do not do a great deal of printing and go through phases. I did a flurry of prints during the pandemic and then it rested idle in our rather cold and slightly damp study for a couple of years. When I bought it, it came with a spool of silver Prusament which worked nicely. I then bought a spool of “Sunlu” filament (Chinese firm off of Amazon) and then a box of 10 colours of the stuff.

    I recently got the printer out and updated the firmware, re-calibrated it and so on. I’ve done several prints with filament that has been open to the environment for at least two or three years and its fine. I have done a print using some transparent filament which was unopened and that was fine too. The unopened stuff was vacuum shrunk wrapped so could not possibly be damp. The opened filament was stored in the original cardboard box in a slightly damp and unheated room.

    For me the main issues for a decent print are:

    • Adhesion on the plate. I actually used glue for a print for the first time recently
    • First layer calibration. If the first layer is wrong, the rest is wrong. You need to get the right amount of “squashing” to get a smooth bottom
    • Always clean the plate between prints - a squirt of EPA and a decent rub with tissue whilst the bed is heating up does the job
    • Keep the guide rails lubricated - Mine whined that all three axes were too tight or just wrong and yet the Prusa app to check belt tightness and forum and wiki advice said it was fine. Any engineer will tell you to lube up when in doubt - do it! X, Y and Z.

    I will try repeating a challenging print with filament that is way older now and see what happens. I printed a couple of tank models in red around four years ago. Both involved their turrets with the barrel facing upwards - that’s a lumpy cylinder about 4cm long and 2mm wide.

    I have seen some notes about PLA being hydrophylic (absorbs water) on the Prusa website’s official advice but I don’t personally think it is an issue and people are probably missing another factor or factors that is fucking up their prints. I think the filament dampness meme is “cargo culting”.

    PLA is heated to around 220C whilst being extruded so any water will steam off very quickly as water vapour - which is not even “wet”, well before worrying a print job.

    PLA is touted as bio-degradable and it is … eventually. It is extremely stable, despite being derived from corn starch. It really doesn’t seem to care about a bit of water hanging around. That’s why I can print new hinges for a plastic garden storage thing to replace the original ones and they last through winters and summers in the UK.

    So, if you think moisture is an issue for PLA filament used for 3D printing, why not do some experiments and then decide for yourself.

    I’m happy to be proved wrong.


  • gerdesj@lemmy.mlto3DPrinting@lemmy.worldMy new specs
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    1 month ago

    That is superb. Sadly my eyes degrade faster than the frames wear out!

    I see you are on the John Lennon specials which makes it a bit easier to model. I haven’t worn circular specs since college (~1990) My current Tesco specials only have lens frame from the nasal bridge clips, over the top to about 5mm below the temple joints.

    Just a thought but you might like to investigate using spring steel for the arms and PLA just for the frames. You could create a jig for joining and heat the ends of the arms up with a brazing torch (kitchen supplies) and sink them into a suitable cylinder close to the temple joint. If you go all in you can make the straight part of the arm rigid and the over ear part flexible with careful heating and cooling and whacking with a hammer!

    Now, that metal work will be comfortable but might be a bit chilly. What about PLA tips over ear instead of steel?

    Anyway, great job. I’m very impressed.



  • gerdesj@lemmy.mltoLinux@lemmy.mlI feel called out
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    1 year ago

    I’ve spent over 25 years with Linux. With multiple distros and a lot of that with Gentoo and Arch. At work I specify Ubuntu or Debian, for simplicity and stability. I always used to use the minimal Ubuntu, because it was tiny with no frills. For quite a few years I managed a fleet of Gentoo systems across multiple customers - with Puppet. Those have quietly gone away. I’ve dallied with SuSE (all varieties), Mandrake, Mandriva, RedHat, Slackware, Yggdrassil and more.

    Arch is surprisingly stable and being a rolling job there are no big jumps. When I replace one of our laptops, I simply clone the old one to it and crack on. I used to do the same with Gentoo - my Gentoo laptops went from an OpenRC job with dual Nokia N95 ppp connections around 2007 to through to around 2018 with systemd and decent wifi when I switched to Arch to allow the burns on my lap to heal. I still have a Gentoo VM running (amongst friends) on the esxi in my attic.

    It was installed in 2006 according to some of the kernel config files. I left it for way too long and had to use git to make Portage advance forwards in time and fix around a decade of neglect. It would have been too easy to wipe and start again. It took about a fortnight to sort out. At one point I even fixed an issue following a forum post I made myself years ago.

    Anyway, Arch is pretty stable.


  • gerdesj@lemmy.mltoLinux@lemmy.mlI feel called out
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    1 year ago

    My wife uses Arch (actually). She calls it the internet, when she really means Facebook. She knows it isn’t Apple but it gets a bit vague after that!

    The last time I had to fire up the Mesh Central client to sort something out on her desktop from work was around three months ago. Every couple of weeks I ssh into it, update it and schedule a reboot for 03:00.