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Yo have to be a really leet haxor
CQ de W5ALT
Walt Fair, Jr.PhD P. E.
Comport Computing
Specializing in Technical Engineering Software
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Image of last year; I hate birthdays. Not my achievement to survive a few years, it's my mothers achievement that should be celebrated. So when asked, I joked that I wanted a mermaid-birthday.
Be careful what you wish for. So, as a test, uploading a mermaid-me for your enjoyment during these times.
Bastard Programmer from Hell 
If you can't read my code, try converting it here[^]
"If you just follow the bacon Eddy, wherever it leads you, then you won't have to think about politics." -- Some Bell.
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Disturbing, on so many levels.
Happy Birthday.
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I don't know why... I thought you were older
M.D.V. 
If something has a solution... Why do we have to worry about?. If it has no solution... For what reason do we have to worry about?
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Might be the grumpy old men attitude.
Bastard Programmer from Hell 
If you can't read my code, try converting it here[^]
"If you just follow the bacon Eddy, wherever it leads you, then you won't have to think about politics." -- Some Bell.
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Eddy Vluggen wrote: Might be the grumpy old men attitude.
Yeah, I guess that has something to do 
M.D.V.
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Just waiting for the elastic (well neoprene) to arrive for the mounting bands and they will be in service tomorrow.
The fawn / brown material on the headband and under them is pig-skin suede (tougher and longer lasting than traditional lamb-skin) as it should be comfortable and "slide resistant".
Next time, I'd use 0.5mm clear PETG as this is a bit too resistant to bending (the original bottom edging broke under the strain. Oh, and I'd have more than 1.5g or rubberised super glue in the house as well ... sticking the suede down used a lot of glue!
Once this is over, I'll use Herself's screen instead of safety glasses - it shoudln't get so hot, sweaty, and steamed up.
"I have no idea what I did, but I'm taking full credit for it." - ThisOldTony
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Looks nice...
OriginalGriff wrote: Once this is over, I'll use Herself's screen instead of safety glasses - it shoudln't get so hot, sweaty, and steamed up.
And I suppose, after you using it, it won't look like nice anymore  
M.D.V. 
If something has a solution... Why do we have to worry about?. If it has no solution... For what reason do we have to worry about?
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I just built my fourth one - using 0.5 screen this time - and did a cost analysis: £6.39 each, which is pretty reasonable. I'm pretty sure the health service isn't getting them that cheap, and there are serious economies of scale you can use with these things:
Shows what the markup on "Medical products" is like ...
The "Comfort band" is free because I have half a hide left from a previous job and haven't touched it for five years or more. No idea what it's worth, I bought it with a job lot of leather when I wanted to reupholster my office chair.
"I have no idea what I did, but I'm taking full credit for it." - ThisOldTony
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OriginalGriff wrote: and did a cost analysis: XXXX each, which is pretty reasonable.
it doesn't matter, it is most probably cheaper than current prices by abusers.
In Spain there are not many people doing this because the 3d printers are not that extended yet. But doing a lot of things in a more traditional way, i.e. the ones I told you, textile nose-mouth masks and similar things for the people working in the hospitals.
So far, private people are getting done almost more than the government. What is to be proud of the people and a :big_facepalm: for the government.
M.D.V.
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this is really cool stuff here. thanks for sharing. keep up the good work.
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I've abandoned ABS for the moment - it was just rat's-nesting every time I tried to use it, and I was getting frustrated after the ease with which I got PLA going.
But PETG is supposed to be higher temp than PLA, more flexible, and easier to work with than ABS.
I had some problems switching - you could still see bits of ABS in the material for ages - and I had adhesion problems with the bed, but some fine tuning has sorted that, I hope.
And it's printing it's first "real world" object: 
As you can see, it's stringy stuff, but that cuts and sands off pretty nicely. I tried a blowtorch, but you have to be really careful - it's glass temperature is pretty lowish and it softens quickly.
Can you guess what it is yet?
"I have no idea what I did, but I'm taking full credit for it." - ThisOldTony
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OriginalGriff wrote:
Can you guess what it is yet?
Headband for a face shield? I saw a room full of 3D printers churning them out on the news.
Software rusts. Simon Stephenson, ca 1994. So does this signature. me, 2012
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Yep! I have an A2 sheet of clear PETG 1.0mm arriving today, if the Royal Mail can pull their fingers out long enough ... just printing the base retainer / shaper and then I need to knock up a drill jig in Fusion 360 to get the holes right.
"I have no idea what I did, but I'm taking full credit for it." - ThisOldTony
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Are you making these on a purely volunteer basis with templates you got from someone/company/internet, or are you on contract to make these.
Anyhow, I think this is great! 
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No money is involved: this isn't feasible for industrial production as each headband takes 3 1/2 hours to print! I'm trying to make one for Herself since she works in an old folks home, and one for my neighbour who is a carer for the council - and they are far too tight to provide proper PPE for employees: even masks are limited to "one per call" and have to be collected the day before you need them ... better than Herself's place though: she was given one mask and told to wash it every day.
This is the prototype from the template provided by Prusa that I linked to in the Lounge: PrusaPrinters[^]. The headband is fine (though I would have evenly spaced the mountings to make hole punching / drilling easier) but the chin piece is very poor - all the stress is on the outside because the shield is trying to straighten, and all the support is on the inside. 
I was going to heat the clear PETG with a blowtorch to set it in an arc and reduce the stress, but half way through I ran out of butane ...
"I have no idea what I did, but I'm taking full credit for it." - ThisOldTony
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I am not that sofisticated...
I just used something like: upper cover[^] and the back side of this[^] with a bit of textil band and a couple of cable straps to make it a bit more robust and adjust it to the head.
And for the nose-mouth masks... courtain fabric, some textil ribbons and 14 cm of 1,5 mm² copper dampproof installation cable (had some spare of 3x1,5 from last electric job) to make the adjusting to the face in the upper side.
M.D.V.
If something has a solution... Why do we have to worry about?. If it has no solution... For what reason do we have to worry about?
Help me to understand what I'm saying, and I'll explain it better to you
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I'm renowned for over-engineering things: I don't build things to fall apart. Herself always said that the first greenhouse I built her was more robust than the house I bolted it to; my shed is bolted to the concrete pad under the breeze blocks it stands on; that kind of thing.
And Herself will be wearing it for 6 hours a day - plus she's the "careless type"!
"I have no idea what I did, but I'm taking full credit for it." - ThisOldTony
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OriginalGriff wrote: And Herself will be wearing it for 6 hours a day
Mine usually does for "expected" 5 hours a day (she never gets out punctually), but she is kind of careful with this kind of things.
Face protection no problem... can be cleaned up. As long as you don't scratch it, no problem.
Nose Masks... 2 units / day. Then wash machine.
Self made nose masks were her idea. I just jumped in when she had the first prototype and was discussing with her mother about the "nose-grip".
I already knew that this kind of cable works really good in that area (I had a bad experience with the septic tank... twice  )
M.D.V.
If something has a solution... Why do we have to worry about?. If it has no solution... For what reason do we have to worry about?
Help me to understand what I'm saying, and I'll explain it better to you
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I'm the same Paul - if I do a job it stays done.
"I didn't mention the bats - he'd see them soon enough" - Hunter S Thompson - RIP
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To reduce stringing, try increasing the retraction distance and speed.
The holes in the Screen part are the same size as a normal hole punch, and the distance between the left two holes and the right two holes is the same as a normal 2 hole punch, (the middle gap is a bit smaller).
I've been trying to print these for 3D Crowd UK, been having issues with a bad batch of PLA tho, intermittent clogging, I suspect its diameter gets too big in places.
I've got a roll of Prusa PETG on it's way.
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Got home from Qatar and eventually got round to opening up my 2nd 3D printer, this time an Anycubic Predator delta printer. It is a bit of a beast, at over 1m tall (excluding the filament reel holder) and almost 60cm wide.
It slots in nicely next to my other one, might get some blocks to lift it off the floor a bit, but at the moment it's fine.
The man cave is taking shape now,
Just need a few more racks and stuff to be a bit more organised with all the smaller parts etc.
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Doesn't look like you are going to run out of filament anytime soon, either!
"I have no idea what I did, but I'm taking full credit for it." - ThisOldTony
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