gerdesj

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!)

You have loads of options but you need to also start from ... "what if". Work out how important your data really is. Take another look and ask the kids and others if they give a toss. You might find that no one cares about your photo collection in which case if your phone dies ... who cares? If you do care then sync them to a PC or laptop.

Perhaps take a look at this - https://www.veeam.com/products/free/linux.html its free for a few systems.

Good skills Sir! Advice noted and I will re-evaluate how I do specs.

Thank you.

Perhaps, but have you actually tested this for yourself?

PLA is extruded at 220C in my Prusa beastie. Once the filament is slapped on the model, I probably want it to to fuse to the previous layer really well and then cool really fast and become stable.

We need to provide working and results rather than "I think that". My printer is quite close to a very large double doors to outside, which open and shut as required.

It's complicated but PLA is bio-degradable ... eventually. Not months but years. That's much better than the horrors you see on Blue Planet II.

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.

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.

In Australia, it's the other way around and the clock will try to eat you or at least sting you to death.

So where do you put the rest of your helices on a cylinder or cone, in 2D? In Flatland a screw or bolt becomes a circle with a short hair. The whole point of "leftie loosy" is to try to help with reality as we perceive it.

Try it the next time you are underneath a car wielding a socket spanner with a taped on extension thingie that you jury rigged whilst trying to shift a hex nut at 45 degrees to reality that you cannot see, with oil dripping in your eye. Obviously the oil is a mix of the 30 year old native stuff loosened up with the WD40 that might break the rust lock.

I suggest you do think abut things in 3D and don't forget the other dimension (time). That WD40 needs time to break the rust lock.

"Leftie loosy" isn't for keyboard worriers - its for engineers and technicians, plumbers, and the rest and obviously for DiYers.

When you are knackered and pissed off and you need to shift a fucking nut or bolt or whatever, you need incantations to get you back on track.

Apple: User - you are holding it wrong!

The spanner is always at 12 o'clock. Either turn yourself or the spanner or your point of view to make it so and then the rule holds. The last option require imagination.

Take the piss after you have tried to thread a nut on a bolt that you cannot see and tightening it is towards you, at an angle. The nut has to cross a hack sawed thread and will try to cross thread 75% of the time unless the moon is in Venus.

Have a chat with some plumbers, builders, chippies, sparkys or engineers - assuming you are not one already. I think "leftie loosey ..." is well known in the UK.