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Just got fucked by DHL holding my PCB order hostage. Had to pay an extra $66 that wasn't at play last week, when I placed my order. I'm sooo glad the "country" is getting rich off of my back. I guess this is another hobby that will have to take a back seat for a few years...
I've been researching methods for fabbing my own boards. I've got some pretty tight tolerances I'm trying to meet.
Any potential paths forward? Desktop cnc?
For my purposes: CNC routing is too sloppy. Photolithography is promising, but involves a lot of steps with potential for error at every stage, not to mention the chemicals necessary for etching. Lasers are interesting, both for lithography and direct copper ablation, but there's a high barrier to entry with cost.
Fair, ya even around 10 mil is probably pretty tough with a reasonable cost cnc. I imagine with laser ablation, you'll probably run into similar issues, you still have to physically move and point the laser, mirrors, or your target base.
I've got a little bit of a background in optics and sensors, but diy photolithography still seems pretty challenging, would be interested in following your work if you go down that route.
Computer-controlled laster etching/cutting is a thing - ideally we have as few manual steps as possible.
Ya ya, but same with cnc, you have things like backlash and physical control challenges.
Those can be adequately overcome by a proper controller. The greater challenges are in the physical effects of the actual method, such as CNC burrs and ablation heat spreading.