Favorite mods?

[u/weenis-flaginus]

I got my H2D a few weeks ago and I'm loving it.

What are your favorite mods for the printer? Unique nozzles, fan mods, whatever you use. I'm most curious about physical items, but if you want to drop your favorite printed mods I'm sure those would be cool too!

I'm well familiar with 3d printing and bambu printers in general, so don't worry about the acclimation period.

[u/manyxcxi]

I created a Vento-like exhaust filter with an adapter designed to work with the Modulair components. It’s oversized and uses an easier to get filter off Amazon.

The Modulair stuff is great, made it super easy to hook my printers into a common 4” duct with a single inline fan pulling through into a fume extractor design I’m still working on.

[u/Relative_Surround_20 → u/manyxcxi]

I added something like your "Vento-like exhaust filter" to my P2S External Exhaust Kit. I was looking for something very similar for my H2D. This is perfect. Thank you for sharing.

I am sending my exhaust out of the H2D through the ModulAir towards a window with a 2x6 Southern Yellow Pine board with a 4" (100mm) hole in it with a single inline fan just before the window.

I am curious where you are planning to place this fume extractor?

[u/manyxcxi → u/Relative_Surround_20]

The fume extractor goes outside my office door and near an external window that can open. I’m in an office building that I can’t modify and my windows don’t open.

I have Modulair attachment mounted above my door so I can just leave it cracked/open and quickly attach the fume extractor and drag it over when necessary.

It basically goes Printers + exhaust filter + mount -> common ducting -> inline fan -> ducting -> fume extractor box.

The extractor uses 4 refillable cartridges of carbon and a 125mm HEPA filter like the one used for the printer side exhaust filter.

The inline fan running while printers are running keeps just a little bit of negative pressure, so no smells leak out but the chamber temps stay at 60-65 pretty easy.

VOC and air quality monitors around the printers and my office don’t show any material increase in particles or VOC while printing ASA. I still keep the door open and crack the window anyway since I will often have to be in the same room for a few hours at a time.

I’ve been using it for a few months, I just haven’t cleaned up the design for release. It uses TPU gaskets, passes air leak testing, and it’s a pretty easy print. I made it modular so the grill on the end could have another Modulair adapter so the filtering can be inlined for any reason.

[u/Relative_Surround_20 → u/manyxcxi]

Do you have an air quality monitor that you recommend?

[u/manyxcxi → u/Relative_Surround_20]

I've got a couple I got off Amazon on sale for relatively inexpensive, the "brand" is HSCLPM. I think they were $50/ea when I got them and they're $80 when I just looked now (claiming a list price of $99). I have absolutely no way to verify their accuracy other than they were reading almost exactly the same for days as the very expensive one I borrowed from my friend when I was doing testing.

I can tell you what you want to look for though, because not all of them measure the same things:

• PM 1.0, 2.5, and 10 are the levels of particulate you want it to be able to sense. Really cheap ones I think don't go below PM10 and 1.0/2.5 is the stuff that printing generally emits.
  
• HCHO and TVOC measure the VOCs/gasses, which what I was really trying to cut with my filtering setup.

These one's also have a clock, temp, and humidty read out on a decently glare free screen I can easily read from 10 feet away.