No Vent? No Problem!

Good to know that toolbox is working out. I’m still on the fence about the filter. I have one on order assuming I’ll want to use it in the winter when it’s below 0 degrees F. Then I’m concerned the toolbox will be too tall for the Glowforge plus filter. Are you concerned about the height with the filter?

No. It’d be different if I wanted to just lean over and look in it. Right now I just stand up to swap out materials. The extra 6 or 8" shouldn’t change that.

If I wanted to do it sitting down I’d likely do some combo of either a slide out panel for my laptop and/or a barstool height chair.

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Is it a basement window that slides across like a normal window or one that folds out on a hinge? I’m fairly new to living somewhere with basements so I’m not sure what is typical, but ours fold out so I can’t use a vent panel that goes in a slightly open window like this. If yours is the same, I’d love to see how your vent works. Is it weather-proof enough that you (do or would) leave it in place long term?

It’s one that slides to open. A couple feet long and 10ish inches tall. One side slides to reveal a screen. The unit fits into a frame that’s put in place during the foundation pour.

I was originally going to just slide the window open and put the insert in the open half. But the screen is fixed. So I ended up taking the window out of its frame and made the foam panel take the whole space.

Take a look to see if yours can pop out (I think they all can).

Right now it’s a press-fit and is weather tight. If I keep it I’d seal up the edges with foam or tape. Or both.

Ah man, if this was me?! I definitely would’ve drilled the hole in the wrong spot on the outside of the house! :slight_smile:

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Lol I was thinking the same thing… @rpegg totally knew what he was doing…made it look easy…

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Aren’t you a musician? Where are your earmuffs!!

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What? Believe it or not, we played a square dance the other day for the WV School for the Deaf. They seemed to like it.

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I’m currently considering options for venting as well. I purchased the glowforge for my Museum, which is in a 1920s heritage building and I can’t modify the exterior without applying to the heritage branch for approval. I’m thinking of venting through a basement window using a dryer vent extension.

I’m hoping it’ll work…is dryer venting (the aluminum tubing) sufficient?

That’s what I am using!

If you can keep it under 10’ (including two 90 degree bends) flex should be fine.
If it is longer, if there are many bends or If it is in a concealed space (like within a floor/ceiling cavity) I would recommend smooth metal duct.
Flexible duct is meant to be used in places where it can be seen/maintained, unless it is only moving air like for a bath fan or for an HVAC duct. If you can see it from the basement it should be OK.
In any case a smooth metal duct impedes air flow the least.

They say the :glowforge: can blow 10’ plus two 90 degree bends.
I calculate that to be a 20’ effective length.
You can calculate your effective length by measuring all straight pieces of smooth duct and adding equivalent lengths for each bend depending on how tight the radius of the bend is based on this post.
If the total is less than 20’ then you should be fine. If it is longer then consider adding a booster or better yet just spring for the filter.

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I wanted to say that @dan referenced something of about 10 foot being the distance that the GF :glowforge: fan could proper push the exhaust, but I cannot find that posting now.

Beyond that distance, additional fan assist might be necessary.

Update:

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He verified the 8ft of foil flex ducting plus 2 90 bends were factored into the effective work load of the exhaust. (I asked - that’s why I remember :slight_smile:)

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Obligitorily, your escutcheon will have to be the headpiece to the staff of Ra.

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If it is a smooth metal duct with low sweep (wider radius) bends instead of a flex duct with tight corners you might get a few extra feet.

Agreed. The unfortunate side effect is the fan noise is made louder.

There are several threads about dampening the sound (by users’ experiences), but your mileage may vary.

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If you get one that is Energy Star rated it will also be quiet.
The current Energy Star rating for exhaust fans (including in-line exhaust fans) considers sound level as well as CFM/watt.

The fan noise from the Glowforge gets loader at the exhaust outlet with solid metal ducting.

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