The article rightly points out the industrial impact of more powerful and compact lasers but I cannot wait for those PCSELs to reach the small workshop market. Having a cheap laser able to cut metal at home / small shops would be so useful (And sneakily dangerous as lasers are).
>> (And sneakily dangerous as lasers are)
These seem safer. With a wide emission area and focusing lens, a reflected beam will weaken with distance.
The article rightly points out the industrial impact of more powerful and compact lasers but I cannot wait for those PCSELs to reach the small workshop market. Having a cheap laser able to cut metal at home / small shops would be so useful (And sneakily dangerous as lasers are).
Can you expand on why you think this would be so great for home workshops? How do you envision using the laser? Handheld, mounted, or on a CNC?
Not Poster, but commercially-available solid state lasers top out at a few tens of watts and due to limited wavelengths have restricted usage on certain materials (eg. even different colours of the same type of plastic may or may not cut, well or at all). I know I've a machine in mind that would be great to make if the available diode lasers were able to cut a wider range of materials, never mind metals.
If it can cut metal, it'd probably not suffer much in the way of limitations on other materials... .
When I moved to the Netherlands my boss told me to never spend more than 20 euro on a bike because it will get stolen. I didn't listen, and lo and behold two weeks in my 75 euro bike and the 35 euro heavy duty lock disappeared
I'm skeptical: * Where do you buy a ≤20 euro bike? * Most people on the street have bikes that look to be at least 200 euros new, from what I can tell.
They didn't mention the year of the story, it could've happened a couple of decades ago.
When I moved to the Netherlands my boss told me to never spend more than 20 euro on a bike because it will get stolen. I didn't listen, and lo and behold two weeks in my 75 euro bike and the 35 euro heavy duty lock disappeared
I'm skeptical: * Where do you buy a ≤20 euro bike? * Most people on the street have bikes that look to be at least 200 euros new, from what I can tell.
I've never done it, but you buy it from the thief (junkie) directly. So it could be that you find them by word of mouth, like you would use to buy drugs when they were illegal. But you can also buy a second hand bike very cheaply, some are even free (just an example: https://www.marktplaats.nl/v/fietsen-en-brommers/fietsen-her...). New bikes are usually more than 200 euros, dutch brands are 500 euros and up
A society in which "the average car-buyer" has a tiny portable steel-melting laser is a society where I'm wearing welding goggles every time I leave the house. And I'm not sure how you even lock a bike or a door or a safe any more.
"The average car-buyer or metalworker" can already afford a $30 cordless angle grinder: https://www.harborfreight.com/power-tools/grinders/angle-gri... (Cost plus a $30-$80 battery, of course, but after you pick your color, you've already got batteries). Your locks are far more protected by the social contract that would compel a stranger to stop someone who was cutting a bike lock with an angle grinder, and would ca…
Don't cut vinyl with your laser, it will produce chlorine gas which will not be good for you to breathe and will corrode your equipment. Use a dragknife cutter instead.
A dutch women told me once a story, where she but a used bike in Amsterdam and the heroin addict who sold it to her, threaten her to steal it again, if she does not use a heavy lock.
Does the Netherlands have a law against knowingly buying stolen property?
Every place in the world does probably. But how would you prove an unmarked, cheap bike was stolen?
A society in which "the average car-buyer" has a tiny portable steel-melting laser is a society where I'm wearing welding goggles every time I leave the house. And I'm not sure how you even lock a bike or a door or a safe any more.
"The average car-buyer or metalworker" can already afford a $30 cordless angle grinder: https://www.harborfreight.com/power-tools/grinders/angle-gri... (Cost plus a $30-$80 battery, of course, but after you pick your color, you've already got batteries). Your locks are far more protected by the social contract that would compel a stranger to stop someone who was cutting a bike lock with an angle grinder, and would ca…
A question I've always had: How do I know if my glasses protect against a particular laser? I'm talking about the ones in hobby CNC machines, laser hair removal places, etc, not high-powered industrial ones, where there's likely a high degree of know-how on safety already?
"The average car-buyer or metalworker" can already afford a $30 cordless angle grinder: https://www.harborfreight.com/power-tools/grinders/angle-gri... (Cost plus a $30-$80 battery, of course, but after you pick your color, you've already got batteries). Your locks are far more protected by the social contract that would compel a stranger to stop someone who was cutting a bike lock with an angle grinder, and would ca…
Don't cut vinyl with your laser, it will produce chlorine gas which will not be good for you to breathe and will corrode your equipment. Use a dragknife cutter instead.
It does work, and I've got great filtration and ventilation, but yeah, probably not a good idea. Edited. Same caution is true of PVC, which is a shame because it's really convenient for making the aforementioned ventilation systems!
When I moved to the Netherlands my boss told me to never spend more than 20 euro on a bike because it will get stolen. I didn't listen, and lo and behold two weeks in my 75 euro bike and the 35 euro heavy duty lock disappeared
I'm skeptical: * Where do you buy a ≤20 euro bike? * Most people on the street have bikes that look to be at least 200 euros new, from what I can tell.
This was 2010-ish and I found one on Marktplaats. Might be going for 40 or 50 now with inflation. People selling them on the street also had for cheap, but these were most definitely stolen.
CNC would be an obvious implementation. At the moment, there are expensive-but-affordable home CNC laser cutters, typically for a small number of thousand EUR/USD. The more powerful ones can do a very neat job cutting (up to a few mm of) plywood. There are also CNC plasma cutters, which do a good but slightly rough job of cutting sheet metal, and are relatuvely large and complex beasts. I guess a highly-powerful lase…
Yeah, my larger point is that there are already plenty of ways to cut metal in a home workshop. I don't see how a laser would be an improvement on any of those, unless the goal is to CNC with extremely tight tolerances, but even then... it seems unlikely that you'll be CNCing blocks of metal, more likely just 2D cuts from sheets of metal, which is pretty limiting. It would certainly be fun for some stuff, but I think…
The precision of a laser cutter would open up a lot of possibilities. Particularly making things that slot together with tabs - like fabbing my own welding squares and fixtures where a cnc plasma cutter would leave too rough an edge to have them slot together accurately.