Comments on: Halloween hack ideas

By: Tomi Engdahl

Tomi Engdahl — Tue, 02 Dec 2025 13:52:30 +0000

What is the fog in theatrical production?
Carbon dioxide and dry ice

Liquid carbon dioxide (CO2), stored in compressed cylinders, is used in conjunction with theatrical fog machines to produce “low-lying” fog effects. When liquid CO2 is used to chill theatrical fog, the result is a thick fog that stays within a few feet of the ground.

Theatrical smoke and fog – Wikipedia https://share.google/x4llPUz3N6VJeBTRG

By: Tomi Engdahl

Tomi Engdahl — Tue, 02 Dec 2025 13:51:47 +0000

Is stage fog harmful?
Studies show increased acute symptoms, including nasal, respiratory, and mucous membrane irritation, following repeated exposure to theatrical fog. Little is known about the chronic health hazards that many chemicals in fogging products cause1. Always get a Safety Data Sheet (SDS) for the fogging product.

By: Tomi Engdahl

Tomi Engdahl — Tue, 02 Dec 2025 13:50:44 +0000

Fog machines can have negative effects on performers, including short-term issues like coughing, dry throat, headaches, dizziness, and tiredness, and long-term respiratory problems such as chest tightness and wheezing. These effects depend on the type of fog, duration of exposure, and the sensitivity of the individual.

By: Tomi Engdahl

Tomi Engdahl — Tue, 02 Dec 2025 13:46:59 +0000

Tutustu videoon: “propylene glycol fogger” https://share.google/VEkftLJNhcyY45YuB

By: Tomi Engdahl

Tomi Engdahl — Wed, 19 Nov 2025 08:06:01 +0000

All the time. Fog/haze seems to affect people with extreme asthma the most. If they ask to not run it, I comply.

Inform them that it’s water based, that it’s glycol (sugar) and water, harmless and approved by the FDA. It’s a difficult conversation to tell someone “it’s all in your head,” but that’s really what needs to happen. I typically send this white paper from the Actors Equity to schools and such when they ask and want to cover their ass.

https://actorsequity.org/docs/librariesprovider2/resource-documents/safe-sanitary/protocol.pdf?sfvrsn=bc72a1e_1

As far as how the haze hangs, this will change with humidity, temperature, and HVAC. No two venues will be the same.

By: Tomi Engdahl

Tomi Engdahl — Thu, 20 Jun 2024 16:19:59 +0000

Anything can be a smoke machine if you use it wrong enough : r/techtheatre
22.12.2018 — Don’t let the magic smoke out. It’s very hard to get back in.

By: Tomi Engdahl

Tomi Engdahl — Fri, 14 Jul 2023 07:57:11 +0000

Fog machine pushes fluids through a heat exchanger/block then pumps it out, takes longer to heat up, great for outdoor crowds, way denser smoke.

Oil base hazers use a different fluid which doesn’t need to be heated, it just compresses the fluid from the get go. Great for rooms and lighting and when there arr screens or projected visualdls, way more subtle and expensive.

Fazers act like hazers, use the same fluid and act the same way with heating process but instead of the big Woooosh, you can control Tested burst output

By: Tomi Engdahl

Tomi Engdahl — Wed, 02 Nov 2022 11:07:11 +0000

How To Make a Cheap Fog Machine 10 Times More Powerful
https://www.youtube.com/watch?v=5NxTmHc27Hw

If you know the reason why commercially available fog liquids use so much water, please let me know in the comment section below, I would love to read your suggestions!

Making the Monster Fog Machine – Nicolas Salenc PBP
https://www.youtube.com/watch?v=mpGjBgnpZC8

By: Tomi Engdahl

Tomi Engdahl — Sat, 21 May 2022 18:51:23 +0000

Both fogger fluid and vape fluid consist of propylene glycol, or glycerin and water mixture. Vape fluid has typically also additives nicotine and flavoring.

By: Tomi Engdahl

Tomi Engdahl — Sat, 21 May 2022 18:49:53 +0000

Paulo Cesar Saito “The PG in Smoke / Fog / Haze fluid is industrial grade (I know, I use a lot at work). It’s not a good idea to vape it. You really need pharmaceutical grade PG”
https://www.e-cigarette-forum.com/threads/fog-machine-juice-possible-vape-base.39314/