You are correct with the clear face shields. You are likely to be using PVC,releases HCl fumes when burnt.
Also worth noting, you will probably be buying the acetate/PVC as ‘letter size’, that means the holes you punch will be in slightly different places to that for A4:
Good luck and let us know how it goes.
General chat over here mate 
Below is very much just a sketch!!
Ok, if you are using 254mm paper you will need to set it as follows (its ok to be a few mm out):
| <-- edge of paper … … … … … … … … … … … … … … … … … … edge of paper |
| <-- 13mm --> O <-- 80mm --> O <-- 68mm --> O <-- 80mm --> O <-- 13mm --> |
I suppose it depends on what your hole punch does, the wikipedia page is quite useful.
Good luck, keep us informed.
(and, cheers for using mm 
)
Morning / afternoon / evening jemdur! (We should be keeping general discussion on this thread!)
OK,
your dxf did not upload, I will email you in a bit, you can send it to me that way.
I have not used CorelDraw so I can’t really help you with that.
I am very, very new to all of this software so I will give you my view, but maybe someone more savvy on the forum could help you out with this.
Not sure how different software is, we use Techsoft 2d design for the drawing editing and LaserCut 5.3 for the lasering.
On out 2d design we simply change the colour of the parts to cut first. So, for example I set all of the internal pieces to RED and all of the outers to BLACK.
When the DXF file is uploaded to LaserCut it recognises the different colours as 2 different laser jobs, you can specify which one to do first and set speed / power etc for each job.
I’d assume your software will do similar.
As for jumping around, this I have not really properly got to the bottom of, I think it is something to do with drawing order and grouping (anyone else… I’m flailing here!).
I am currently at school cutting on sheets of 650x550mm… hence this reply is taking so long… every 20 mins it needs me!
Here are the files I am using (can’t give you CorelDraw versions yet as my evaluation copy is on my machine at home):
There is also the LaserCut manual, page 26 on, may be similar to what you are using.
Our laser bed had vertical slats so I have had to optimise for cutting everything horizontally so parts do not slump between the slots while in the middle of cutting.
These files have little jumping around (certainly not enough to warrant me spending hours trying to figure it when I should be burning) so you may be able to modify / adapt to suit your needs)
A word of caution, I have probably done some ‘odd’ grouping, particularly on the adjuster strap, so check carefully when editing!
If I get the chance between burning I will see what I can work up onto a 500x300 sheet for you
Cheers
Phill
I believe you’re right. With our setup, I’m pretty sure it cuts the lines you drew first first, if you see what I mean. 2D Design keeps an order - each new thing is drawn ‘in front of’ the last one. You can modify this with ‘bring forward’, ‘bring to front’ etc on the ‘edit’ menu.
Hi all,
My school is possibly eventually creaking into action and allowing me to access the DT workshops. We have a potential local order for a couple of hundred, but if I can do more than that is there a supply channel I can feed into?
Hiya Rich there is a thread where you can put in offers:
https://community.andmirrors.co.uk/t/face-shield-offers/
If you get some out there, particularly in the social care area, give them so contact details, you will be swamped!
Which area of the country are you?
Sorry, Up North, Durham.
I would get in touch with your local GPs and nursing homes, making it clear that if others want them to get in touch with you!
Good luck!
Phill
I find I’m getting some issues with some of my headbands.
Couple of thoughts;
Would slowing down the laser speed help? The laser might then vapourise the offending bits. Might be worth running it slower, I had similar to #2 when I wass cutting too fast, slowing down made all the difference.
Is it possible to strategically place something under the sheet so the ‘blobs’ drop off, probably not!
can you turn the strip over and drag a blunt flat edge among the surface? (steel rule of such like)
Thanks for that… one more rung on the learning ladder (sorry teachers, I just collectively made you shudder 
)
jemdur, hope you are making progress.
I just noticed when burning today that on the adjuster straps I had managed to leave a couple of very small elements on the drawings which should not be there.
When you cut the adjusters you end up with some v. small holes burnt at the end of the adjuster V’s
I am about to upload the cleaned up files to dropbox, if you have downloaded you might want to download a fresh copy.
arrrrrrrrgh, forum is limiting me to 3 replys per post (smokey, something you can change?)
try this:
Hi Jerry,
I just imported your dxf file into my 3d design software and there were missing elements usualyy on the curves on the fine detail.
When I imported the same into coreldraw 2020 they were all there.
assuming your version of corel is showing all is ok, can you change the colour of the internal cutout parts:
then save it as a dxf.
Can your laser software then pick up these different colours let you set which to cut first on your laser?
If you have lots of ‘yes’ answers, go for it chap!
Is anyone else getting faster than usual filter clogging with PP? It’s also depositing a lot of white powder on the lens holder.
Yes. PP generates a heavy white dust that will fill your pre-filter up consider running with simple extractions (no filter) or rig a pre-pre-filter out of some gauze or something and check it regularly. Keep lenses clean with air assistance and good extraction.
Has anyone got a decent, reliable supplier of acetate/PVC?
We have knocked out our first 1000 but we are about to run out of the PVC.
Ordered from Viking Direct last time
km-wholesalesuppliers, also have it and have just re-opened after locking down.
Has anyone else found the acetate sheet sometimes keeps popping off?
Not as of yet.
Have you checked the hole punch settings?
The standoff acetate holders are spaced so that the acetate should be held under tension.
Are your standoff holders failing (ie bending all the way over) or are holders not gripping the acetate fully?
Holders being this bit: 
Are you using a 2 hole punch on the A6 setting? The 888 setting or the A5 setting on a 2 hole punch is no good. If you are using a 4 hole punch… also no good for this design.
