• 9 Posts
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Joined 1 year ago
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Cake day: June 11th, 2023

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  • And for the final thing I’ll definetly wanna fix with no clue how, is that the Monitor is oddly Zoomed out. The text is all further back then it should be making for a weird look. Old Burn-in from when this thing was actively used also assures me of that. No clue how one can fix that, any suggestions?

    Most CRT displays have potentiometers, adjustable by screw or knob, to control horizontal and vertical size. As always, be careful with flyback transformers, etc., so as not to die.

    Burn in is a real and AFAIK permanent thing.


  • wjrii@kbin.socialtoRisa@startrek.website🐋🚬🕰
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    7 months ago

    Most unrealistic part of the movie, and by god I’m including TIME TRAVEL, is that Scotty would be both dismissive of and insanely good at keyboarding text entry and use of a 1980s computer. Either he’d be pissed off because because there was no way to use this antique, or he’d be delighted at the chance to use his historical reenactment skills.








  • Drawing an imaginary factory- and they wanted kids to do this before teaching them the parts of the cell- isn’t going to help you learn what mitochondria are.

    That sounds like it’s an exercise meant to get the kids thinking about a multi-faceted system existing inside a single structure, with parts that are interconnected but distinct, and will lead into a common metaphor teachers use to teach about biological cells. Not being graded means they’re not judging the kids on what they know or don’t, but want to evaluate where they are with this sort of thinking and figure out what they will focus on. Also, your kid may be smart and already know where they’re going with this, but others in the class may not. If she does, she could probably knock that out in fifteen minutes. Even if you decide that she doesn’t need to do it, I don’t think it’s stupid busy work, at least not necessarily.

    Some teachers are dumb; we need too many of them and pay them too little for each and every one to be a superstar. The ones coming up with curricula and lesson plans usually aren’t, though.




  • I am not quite sure I’d be ready to recommend it, but your more adventurous patrons may want to experiment. These keycaps are PBT, a cousin of polyester. They are not particularly pleasant smelling when heated or especially when burned, but they’re not as unhealthy as ABS (the other common plastic for keycaps) and certainly not as bad as the straight up poison gas that comes from PVC. I use a basic 5W blue diode laser, coat the keycap with an “infusible ink” pen from Cricut (most of their infusible products are polyester-based), put it in an alignment jig, then laser a raster image “low and slow.” My particular laser seems to do best when I do two or three passes at 2% power and 45mm/minute. The idea is to heat it roughly in line with the crafting heat presses without letting the heat spread and color in areas beyond the beam. I experimented with actually burning or engraving, and that sort of works, but (1) it’s stinky, and (2) the ash wipes away and you’re left with a mostly colorless letter-shaped indentation. The “dye sub” technique produces barely any fumes at all. There are a few people on youtube who’ve tried similar techniques, and quite a few who have used different heat or dye sources.

    Aesthetically, the process was only marginally successful, though I’m optimistic about the longevity, at least compared to other low-end manufacturing techniques. I’ve been using a similar set of home-lasered keycaps for about a month with little to no wear. My jig was not as good on that set, AND I tried to center the keycap legends, meaning every fraction of a millimeter was painfully obvious. These legends didn’t end up exactly where I might have liked either, but they’re all off by the exact amount (about 1mm), so being consistent, the alignment isn’t too bad.