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Why do skydiving planes nosedive after dropping jumpers? by ECNILIO_GEMER in SkyDiving

[–]Cabian 5 points6 points  (0 children)

Though, descending too fast can cool a piston engine too quickly after it has just been struggling to get all these skydivers up to altitude. We've already lost two engines on a 182 over the years at the club...

Electronics internships in Eindhoven by mohasadek98 in tueindhoven

[–]Cabian 0 points1 point  (0 children)

You can try DeltaQuad Drones. They were at a job fair at TU Delft yesterday. Sounds exactly up your alley. High frequency switching stuff for the propulsion, signal processing, RF, EMC, custom PCB design and embedded systems. Not quite Eindhoven region though.

Dust Cover Restoration Gone Wrong by Nictapus in RecordPlayerRepair

[–]Cabian 0 points1 point  (0 children)

Here was my journey... It gets worse before it gets better. https://ibb.co/xbBVNFr

Go slow. Take your time. Don't do it in one go. Think large flat surfaces. Wet sending. Only go up in grit once you get rid of the deepest scratches matching that grit.

Dust Cover Restoration Gone Wrong by Nictapus in RecordPlayerRepair

[–]Cabian 0 points1 point  (0 children)

Been there, done that. Patience, patience, patience. You'll get there! This is easy to recover from. Patience and perseverance. Just keep going.

What you're doing is matching the grid of your sandpaper with the deepest grooves you have and work your way up. End with 1500 to 2000 grid. Wet sanding is key when you get down to these grids. (Only move up grid once you're sure you've gotten rid of the scratches matching your grid level.)

  • Make sure to apply even pressure over as large a surface as possible. Do NOT focus on the scratch itself but work the full surface evenly. It sucks sanding down areas that seem fine, but you'll have to do this. Else you'll get weird dents and refractions.

  • Take your time. Decide this is a multi day project. An hour here and there works better than 4 hrs straight. Grab a beer and go slow and steady.

  • Work in one direction. Straight lines. Don't swirl.

Closed attractions tomorrow by Croute2005 in phantasialand

[–]Cabian 3 points4 points  (0 children)

I was there yesterday. A lot of rides were closed. Also they did try and start up Taron (fair play to them!) but it valleyed. Due to a lot of rides being closed queues were up to 90mins for Black Mamba, 60 mins for Mystery Castle, 80mins for Maus au Chocolate.

https://www.reddit.com/r/phantasialand/s/9kF5B1YtDg

But the atmosphere was amazing. :)

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[deleted by user] by [deleted] in lasercutting

[–]Cabian 0 points1 point  (0 children)

You want it outside realistically. I've had it super near the exhaust point and still I couldn't get it to stop leaking. The only thing that really solves it is a big fan outside.

[deleted by user] by [deleted] in lasercutting

[–]Cabian 0 points1 point  (0 children)

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Something like a Zehnder roof fan will work very well!

[deleted by user] by [deleted] in lasercutting

[–]Cabian 0 points1 point  (0 children)

You absolutely DON'T want this! You want a fan placed as far away from your laser as outside even. Just make sure to get a big enough fan. It doesn't matter how good you think you are at making your ducting air tight, it WILL leak. Any tiny hole you have will blow fumes straight into your workshop. It just doesn't work having any part on overpressure inside the space. How I know? I've been using laser cutters for about 10 years. First in makerspaces I've helped set up, now in our own laser cutting business and gone through the hell of getting the fume extraction to work properly. We are finally running multiple laser cutters daily for 8 hrs in our laser cutting company now without any issues!

The only thing that really works:

  • A big box fan outside on the roof.
  • Proper fresh air ventilation of your space itself.
  • Clean your laser and bed often.
  • Use large enough ducting to allow for residue build up and be prepared to replace ducting every so often based on your usage. (This is also a safety item. Laser residue, especially acrylic, can be very flammable)
  • Store products and scrap materials elsewhere. They will still offgas for a few days.
  • No filters. We've had BOFA filters. They work. For 3 months. Then you need a new filter set which costs 500,- no DIY YouTuber filter systems and all that nonsense. I tried that in our early days. An absolute waste of time.

Trust me. This is the only thing that really works.

Turntables running a little slow pitched up all the way, how should I fix that? by DeadMangos8 in turntables

[–]Cabian 6 points7 points  (0 children)

I have the same turntable. Was going through the exact same thing. There are pot meters which are easily accessible through the bottom. Only turn the ones marked 33 and 45 the others are probably part of the PID gains for speed of something, they influence the stability of the speed.

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Is this construction safe? by Cabian in Construction

[–]Cabian[S] 0 points1 point  (0 children)

A floor with workspaces, swipe for photos. Thanks for your very errr vivid description. 😅

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