These are cool. For anyone in the market for a vinyl cutter I would recommend against Cricut though. Very cloud-subscription-user-hostile software that tried to limit the number of times you could use the machine you bought unless you had a subscription. I have a silhouette and control it with a plugin for inkscape and its great.
what's good? have been shopping for something to cut medium EVA sheets. seems like brother scan N cut is most likely to work with SVGs + linux, but can't handle anything past 2mm. siser juliet + silhouette get recommended too but I think both rely on proprietary software
laser cutters seem better on the software side, but more expensive, less safe? (and also not safe at all for vinyl)
The silhouette software is proprietary but I am using Linux + inkscape + https://github.com/fablabnbg/inkscape-silhouette which works perfectly (except I can't get the Bluetooth to work but that's probably a me issue). It's less user-friendly (but more power-user friendly) than the official software and doesn't have all the templates and ready-made designs but that isn't a problem for me.
I would like to get a laser cutter at some point but that's a completely different beast. Don't get a cheap ali-express one that is not enclosed if you value your eyes. You will also need ventilation for a lot of materials if you value your lungs. In comparison, my silhouette is a simple thing I can move around easily. It's also able to plotting, engraving, embossing and foiling with the right add-ons
I like my Silhouette Cameo, which I use from Linux and Windows with Inkscape + the silhouette plugin. However, the maximum thickness that the latest machine can cut is 2mm, and it seems that is also the maximum thickness that the Circuit Maker 3 can handle. So, you probably do want a laser if you want thicker eva than that. In my book, the best choice is probably both.
I would probably prefer the laser and the pen/knife machine to be separate, and for the price that seems like it would be reasonable to accommodate. However, this is a nice looking machine and the Hot Foil Pen is interesting.
I realize that op asked for a Linux solution. But for those on Windows, Adobe Illustrator with the $30 Silhouette plug in on a Silhouette 4 worked close to as well as the dedicated software and hardware I used professionally once everything was dialed in.
It's pretty easy to accomplish the same using virtually any 3D printer, even something as simple as an Ender 3 can be set to pause at a set layer in GCODE where the filament can manually be changed to the next desired colour. Realistically, this is only practical for things like signage, where you start with the base colour (such as yellow or green) then switch to the next for text and details, and if done properly with compatible materials, can look incredibly well-done.
Do you mean as an optical mask for photo step of the process or directly as resist for chemical etching skipping the photo part?
I have done both some home photochemical PCB etching and some vinyl cutting but not that specific combination.
As photo mask it makes little sense in most cases. Just buying a transparency which can be used in an inkjet printer will likely be faster, easier and produce better resolution. These used to be widely available due to use in overhead projectors in schools and offices, but still shouldn't be too hard to get due to use when screen printing custom t-shirts.
As a direct physical resist it makes a bit more sense since it would allow skipping one chemical bath and the photo transfer process. I have seen some people online having very good results of it for decorative etches with moderate size details on thicker metal parts and glass. But I am somewhat skeptical about it withstanding full depth cutting of very fine grids with high pressure circulation like the one demonstrated in Applied Science video.
It will likely come down to etching depth (is it a metal sheet 0.2-1mm or the copper layer on PCB 0.035mm or decorative surface etch), how aggressive your liquid circulation is, type of vinyl and it's adhesive (ones designed for outdoor use might be more resistant to liquid for longer), size of details. With concentrated enough etching liquid allowing fast etches, mild agitation and wide enough lines (>1mm) the vinyl should hold up.
In the worst case if adhesion during etching turns out to be a problem it should still be possible to use the vinyl as stencil while painting on whatever paint to be used as resist. This should still be much faster than doing photo step.
One of the good parts of photochemical manufacturing is that you can make something like a mesh with hundreds of tiny holes that would be impractical with any other approach. It doesn't matter how complex the pattern is.
While you might be able to cut such patterns on vinyl cutter worst case by leaving machine to work for few hours, weeding it might be a big problem. After cutting you need to manually peel half of image you don't want (called weeding). For simple large shapes it's not a big deal but for complex cuts that have a lot of holes or maze like structure it can be quite time consuming. There are industrial cutters that can do the weeding automatically, but I don't think any hobby level machines like Cricut have this feature.
If you have something like a mesh and you are removing mesh part leaving only the tiny dots or pattern with thin long unsupported lines (like a PCB), you need to be very careful to avoid accidentally nudging and separating the small details. This can happen during weeding, transfer to target material and even cutting (for some types of materials). The last one was major problem when I tried cutting copper tape directly, original backing tape was just too slippery, less of a problem for suitable vinyl.
None of that gives you hard answer, but I hope my experience was of some use to you.
I honestly expect transparency film to survive as a product long past when people have forgotten why it's A4 or Letter sized. People are already forgetting why it's called "transparency."
Always a demand for the occasional stack of identical, thin, flexible, transparent sheets of plastic.
Used to live near the highway department's sign shop for the area. When they had a job opening, they'd make up a road sign and put it up next to the street outside the shop. Which made complete sense but did seem like overkill. Guess you go with the resources you have and know.
[1] https://uscutter.com/hp-latex-54-basic-plus-cutting-solution...
laser cutters seem better on the software side, but more expensive, less safe? (and also not safe at all for vinyl)
I would like to get a laser cutter at some point but that's a completely different beast. Don't get a cheap ali-express one that is not enclosed if you value your eyes. You will also need ventilation for a lot of materials if you value your lungs. In comparison, my silhouette is a simple thing I can move around easily. It's also able to plotting, engraving, embossing and foiling with the right add-ons
(Maybe it is easy to do in OpenSCAD?)
These just look like signs. (But cool nonetheless.)
Otherwise, super cool.
I have done both some home photochemical PCB etching and some vinyl cutting but not that specific combination.
As photo mask it makes little sense in most cases. Just buying a transparency which can be used in an inkjet printer will likely be faster, easier and produce better resolution. These used to be widely available due to use in overhead projectors in schools and offices, but still shouldn't be too hard to get due to use when screen printing custom t-shirts.
As a direct physical resist it makes a bit more sense since it would allow skipping one chemical bath and the photo transfer process. I have seen some people online having very good results of it for decorative etches with moderate size details on thicker metal parts and glass. But I am somewhat skeptical about it withstanding full depth cutting of very fine grids with high pressure circulation like the one demonstrated in Applied Science video. It will likely come down to etching depth (is it a metal sheet 0.2-1mm or the copper layer on PCB 0.035mm or decorative surface etch), how aggressive your liquid circulation is, type of vinyl and it's adhesive (ones designed for outdoor use might be more resistant to liquid for longer), size of details. With concentrated enough etching liquid allowing fast etches, mild agitation and wide enough lines (>1mm) the vinyl should hold up.
In the worst case if adhesion during etching turns out to be a problem it should still be possible to use the vinyl as stencil while painting on whatever paint to be used as resist. This should still be much faster than doing photo step.
One of the good parts of photochemical manufacturing is that you can make something like a mesh with hundreds of tiny holes that would be impractical with any other approach. It doesn't matter how complex the pattern is. While you might be able to cut such patterns on vinyl cutter worst case by leaving machine to work for few hours, weeding it might be a big problem. After cutting you need to manually peel half of image you don't want (called weeding). For simple large shapes it's not a big deal but for complex cuts that have a lot of holes or maze like structure it can be quite time consuming. There are industrial cutters that can do the weeding automatically, but I don't think any hobby level machines like Cricut have this feature.
If you have something like a mesh and you are removing mesh part leaving only the tiny dots or pattern with thin long unsupported lines (like a PCB), you need to be very careful to avoid accidentally nudging and separating the small details. This can happen during weeding, transfer to target material and even cutting (for some types of materials). The last one was major problem when I tried cutting copper tape directly, original backing tape was just too slippery, less of a problem for suitable vinyl.
None of that gives you hard answer, but I hope my experience was of some use to you.
Always a demand for the occasional stack of identical, thin, flexible, transparent sheets of plastic.