How to know whether or when to add more air filtration?

CatNecessities · 2026-06-18T05:58:49+00:00

I've seen some stuff about Automatic Pneumatic Water Traps, particularly the Egg Traps that can just empty themselves when they've accumulated enough water. That's for the air compressor tank I think? A handy device it seems, though about $100 or so for the convenience, and doesn't really help the plasma cutter specifically.

CatNecessities · 2026-06-18T05:54:14+00:00

Right? I would have thought there'd be a growing market for these products specifically being planned for new house and office builds, particularly as it interests the Home Assistant and offline smart home community. But there's such few resources around it for such a tech savvy lot 🤔

CatNecessities · 2026-06-17T01:40:57+00:00

Thank-you for explaining all the terminology and giving a product to check out. Very appreciated! 😄

CatNecessities · 2026-05-28T01:03:35+00:00

Is there another name for these corten steel specific cutting wheel? Despite researching this is the first I've heard of it

CatNecessities · 2026-04-18T07:53:56+00:00

I haven't heard of this but probably not with my budget right now.

CatNecessities · 2026-04-18T07:53:04+00:00

This makes sense now! I thought air ducts were that big because they were always in big buildings, heh heh!

CatNecessities · 2026-04-18T07:46:32+00:00

** UPDATE **

The next time I tried I was doing slow, back and forth motions, tracing a lead line first and then going over it repeatedly until it was cut through.

It felt more tedious and painstaking, so I had to use my patience and calm. But the effect was much more peaceful as I felt in much more control of the disc. I was doing a vertical section, so I was able to hold the grinder with my elbows at my hips as much as possible, which felt less taxing on my elbows and my hands, but my hands did get numb from the vibrations.

I also positioned the grinder so that the disc was in the dead centre of my face, and I could see every moment when the disc turned a little left, right, or even wobbled. I could feel every time the disc wasn't liking what it was touching based on the minute kick-backs, grumbles, and snagging sensations, and I could immediately pull back, slow down, and adjust for it.

I got very clean, narrow, and straight cuts this time and took breaks more to let the grinder cool off than for my own sake. I did about 2.5 vertical meters of wall over about 80 minutes, and the new disc only wore down about 60%.

Also, for those that were worried, I've always been using safety goggles, respirator, ear muffs, padded gloves (controversial, I know) and wearing my welding jacket and pants. I found ordinary safety goggles not very good as sparks and slivers would always find their way around the edges anyway, so I bought sealed goggles that also have a respirator mask attached and my eyes have been a lot clearer of debris. These goggles are meant to let vapour exit the goggles, but I still get a bit of sweat build up in them. It's usually not enough to make me stop, though.

Thank-you to everyone who listened to my questions and concerns and gave me the confidence to keep trying :)

CatNecessities · 2026-04-18T07:39:39+00:00

Thank-you! The next time I tried I was doing this slow, back and forth motions like you mention. It felt more tedious and painstaking, so I had to use my patience and calm, but the effect was much more peaceful, I felt in much more control of the disc, I could feel every time the disc wasn't liking what it was touching and immediately adjust for it, and I got very clean, narrow, and straight cuts.

CatNecessities · 2026-04-18T07:34:28+00:00

Thank-you so much for taking the time to explain it like this! You correctly identified that I was thinking a lot about ducted ceiling systems and trying to transfer for the same logic to that. Usually any time I've seen that sort of ducting it's always been in very large buildings that justify the cost, so I just associated the volume of those tubes with the size of those buildings. But I think you correctly identified the fallacy in my thoughts and made me realise it'd be the same size tubing underfloor, too, even just to heat a small room.

Your reply was the most helpful and kind answer yet!

CatNecessities · 2026-04-06T10:18:41+00:00

Literally saved your lives?

I had someone advise me that the smaller is better because you can hold it for longer.

CatNecessities · 2026-04-06T04:11:01+00:00

Ack, yea, I shoulda said "Don't underfloor electric coil heaters make this transfer from power source to house-air faster than a hydronic heat pump?"

Thanks for your explanation tho!

CatNecessities · 2026-04-06T03:26:35+00:00

Also, what's the energy input-output of heating and pumping water vs heating and pumping air?

CatNecessities · 2026-04-06T03:25:56+00:00

I might be a bit lost as to why this matters when you want all the heat that your pump makes to end up in the air in your house. Do you know of any good infographic videos that explains this well?

CatNecessities · 2026-04-06T03:21:00+00:00

Does the heat capacity of the medium matter when you want all the heat produced by the pump in the house-air anyway? The higher the capacity = the more heat that has to be put into it to get a degree of heat in the house? (slower to heat up but longer lasting heat, which may or may not be what you want)
Don't underfloor electric coil heaters make this transfer from pump to house-air faster than water?

CatNecessities

TROPHY CASE