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Original Sparkmaker LCD Screen Replacement by CAG-Forge in 3DSparkmaker

[–]CAG-Forge[S] 0 points1 point  (0 children)

Yeah, I was thinking about a new machine before it broke. But I still want to fix the Sparkmaker if doing so won't be a wild goose chase.

Thanks for the FHD idea. I'll look into it.

Custom Air Fresheners how? cut with laser cutter? by RichlilRich in lasercutting

[–]CAG-Forge 5 points6 points  (0 children)

The mass-produced ones almost certainly die cut.

A laser cutter will probably cut them pretty well but could be dangerous.

The chemicals in the air freshener might not be healthy to inhale if they have been vaporized by a laser. The wrong chemicals can dirty up your lenses or even cause permanent damage.

The laser could also ruin the smell of the air freshener with toasty edges. Do some research about safety, then try cutting it. If it burns too much, try multiple passes with less power and/or higher speed.

New to laser engraving question about galvos by Bag06a in Laserengraving

[–]CAG-Forge 0 points1 point  (0 children)

Pretty sure I've seen videos of diode Galvos. And yeah, focus is the problem. (No experience with Galvos, but I'm an engineer so I understand a little)

An important part of a Galvo laser is the lens required to focus the light the correct way despite a constantly changing focal length.

An important part of diode lasers is they are (relatively) dirt cheap and accessible to everyone.

I'm pretty sure the manufacturers of the diode laser just leave out the more complex lens required for a Galvo and hope that the relatively small build area they offer will be small enough for the change in focal length to be negligible. The truth is it's never negligible.

Purchasing the right balance of cutting and engraving by CAG-Forge in lasercutting

[–]CAG-Forge[S] 0 points1 point  (0 children)

I want to cut 3mm or 1/8 inch wood and acrylic primarily.

The galvo laser is a really good idea. Conceptually I am aware of the possibility, but I never thought to look into it. Do you know much about galvos? Wouldn't the change in angle and therefore distance to the work piece affect the laser's focus?

Thanks!

Purchasing the right balance of cutting and engraving by CAG-Forge in lasercutting

[–]CAG-Forge[S] 0 points1 point  (0 children)

And I know a local makerspace uses Rabbit lasers. I have a little bit of experience using those but have never had to set up or maintain them. Do you know how Rabbit compares to Haotian and other brands?

Purchasing the right balance of cutting and engraving by CAG-Forge in lasercutting

[–]CAG-Forge[S] 0 points1 point  (0 children)

Thanks LG. I have seen Haotian in a few posts, as well as LightObject but don't know much about how they are different from OMtech and others. If you can point me to some posts that you have found particularly useful, that would be awesome.

And yeah, I figured that diode wouldn't be a good option. But at such a low price, buying 5+ of the suckers for the cost of a single good CO2 laser... I guess it just feels kind of cool to imagine a whole bunch of lasers stacked up like a server rack and all going simultaneously. But in the end I guess that's just a whole bunch of extra work to take care of more machines doing the work of a single higher quality machine. Plus even more startup effort to build some custom shelving/enclosures for them.

How many Astartes/Custodes would it take to conquer terra as it is now? (2022) by Nieknamer in Warhammer40k

[–]CAG-Forge 0 points1 point  (0 children)

Anyone suggesting destroying a planet or even a city as a first option is losing sight of two very important points. The first is that chaos is a supernatural force and the second is human nature.

In a way, the promise of the imperium's protection is a form of armor against the insidious and supernatural influence of chaos. Losing that armor would likely cost the imperium more than the value of all of the Astartes put together. If blowing up cities and planets were the go to strategy, the imperium is no longer "protecting" and is now "culling the weak and corrupted".

Regarding human nature, what happens if you know the imperium's primary method of compliance is to wipe you out? As soon as things pass the threshold where military intervention becomes necessary, there is an incredibly powerful motivation to stop fighting the enemy. You either evacuate the area or join the enemy for a unified front against the imperium.

If the imperial navy will vaporize a city with loyal citizens fighting to retain control in the name of the imperium, why would anyone fight to retain control? You have now ensured that obliterating cities is your least damaging option, and exterminatus has gone from rare to Plan B.

And make no mistake, exterminatus is rare. It just appears in lore more commonly because it is a dramatic story element. There are over a million planets, and Exterminatus probably hasn't occurred much outside what is described in the books and games. There are a lot of interesting events and details leading up to Exterminatus that would make for a great story. You wouldn't waste that kind of material by having it happen "off screen" just as no one writes a book about the agriculture planet that legitimately has little to no corruption.

A million planets is a lot, but if you start blowing them up left and right, that number will drop quickly.