on today's maker mashup we're building a negative pressure environment for a resin 3d printer
so today we're going to be building a negative pressure environment for
the new resin 3d printer so i recently made the jump into resin and upon opening the bottle i
realized that this was not going to be sustainable with my current shop set up it was just the odor
was going to be too bad and if you are thinking of getting into resin uh anybody that's ever said yes
a smell but it's not that bad they're absolutely crazy uh the smell even on the watchable resin in
my opinion is pretty bad so what i'm going to be doing here is creating what's called a negative
pressure environment that's really just a fancy term for an enclosure where it will constantly
suck air outside from the enclosure and my hope is is that once this is set up
i'll be able to have the 3d printer completely enclosed and then the all of the fumes will be
vented out so that's my goal of this project it is really just to create an environment where i can
not only have the resin printer run for hours at a time without smell in my shop but also i
wanted to be able to store the resin there as uh even the resin containers to me still
have some sort of a smell from either when they were loaded or after i've used it once already
so that's what we're going to be working on today uh the way i'm approaching this
is that you can see here i've got a fan duct i'm going to be running some inexpensive plastic duct
all the way to the window and we're going to create a insert for the window as well so that
way what i can do is just put it in there when i need the resin printer but then other other
times it will just be closed and that's that's my goal now what i'm doing is approaching this from
um this fan duct but what i've also got here is that you see we've got uh an enclosure
now this enclosure is for a grow kit so if you were to be growing plants or fruits or vegetables
or other things at your house this is an enclosure designed for that and those enclosures already
have hookups for four inch tubing which is what we're going to be using so if i i thought the best
way to approach this is to repurpose the uh grow tent as a enclosure for the 3d printer now this
fan puts out just about 200 cfm and by the calculations this enclosure which is only
two by two by eight should roughly be well below that so i should be able to suck all of the air
from the enclosure consistently out to the outside now the reason why i'm also approaching it this
way is because one of the things that i've wanted to put together for some time as a paint booth
being able to just have a booth where i can spray paint and everything else now this might be an
okay solution for that if it's a smaller area but the other thing that i want to try to do with it
is if this works successfully i'd like to get one that i can stand up in so it would be a complete
enclosure maybe like a four foot by eight foot enclosure and then i'd be able to put the 3d
printer in there or i would also be able to have a paint booth there so it would have a backsplash
but then the entire environment is pulling all those fumes out constantly now in that environment
i would probably need a respirator to make sure that i'm not breathing any of the incidental fumes
but if this setup works it really does give me the framework to expand this later for other
maker projects eventually we're going to also get a laser cutter and i want to use the same or
a similar process to vent those fumes outside so for me this is really my first test of trying to
make this work and if it works okay then i'll be using it on other projects so with all that said
let's get to work we start the assembly of the tent by using these corner brackets in inserting
the rods to form both the top and the bottom the longer poles on the sides join together
and that forms the 48 inch tall structure that we're going to drape the tent over
because of the limited sealing space draping this over the top was a little bit difficult
but we got the job done once it's all done you just zipper this up and it's ready to go
all right so i've got the main enclosure now built uh it's about four feet tall and i think
it's going to be a tight fit uh since i have vent work that is right above it uh i think it might
take a little bit of effort to get it where i'm gonna put it but uh overall i can even use they
have vent holes here at the top but then uh down at the bottom which is where i think i'm gonna
pull the air from uh down on the bottom there then any fumes even if they fall down they should get
sucked up by the ventilation so the next step is to go ahead and get this where it needs to be
and then from there i'm gonna run the ductwork all right so i tried to put this on top of the
shelf right here which is where this needs to go you can see the printer here however
that duct work is too high now i'm gonna go ahead and lower this shelf uh it's only short about uh
it it fits in there tightly so if i shrink it down about another two or three inches then there'll be
plenty of room for this to sit up there uh pretty sure i won't be able to use the top vent here
but i'm more concerned about the side in the back so we're going to go ahead and bring this
down and then we're going to go ahead and put the enclosure up there and get the printer in it
after lowering the shelf you can see i have just enough room to add a four inch vacuum hood that
leads into the inside of the enclosure i then ran this four inch vent hose up and over the
ventilation system and out all the way to the back window in my shop i wrapped this up by inserting
the four inch hose into the enclosure and there's two layers in the enclosure to make sure this gets
a really good seal and i just tighten everything up here okay so i've got this assembled now and
i have this tube running all the way about uh i want to say it's about 40 feet over to
the outside now i haven't hooked that part up yet and we'll go over that in just a little bit
we're just going to create a board so that way we'll mount this hose onto it but what i have done
is i'm just unit testing this to make sure that from a vacuum standpoint that we are getting air
flow that's coming through here now uh i have this on full speed right now which is uh i think it's
rated for about 190 cfm and you can feel right here that it's actually pulling this shut so
if you watch carefully when i close this the rest of the way it actually starts sucking in from the
sides and you can start to see this cave in like this so where the where it's getting the air from
is up at the top i left that one open and i put a uh just a collector at the top it's just a
plastic plate uh and then what i did is that has the top open so all the air is flowing down here
to the bottom and then back up through the hose and you can see here this is very tight because
of the vacuum it's creating on the inside or the negative pressure now i have this running at full
speed and clearly this environment is too small to run that at full speed but that's great because
then when we do our final test and what i'm going to do is i'm going to put a bottle of filament in
or bottle resin in here and then what i'm going to do is test and see if i can smell anything
which i shouldn't because it should all go out through the tube so next step here is to wrap
up the other side this is really just a piece of tube that goes all the way to the other side
and then we're going to go ahead and hook that up to the fan and then the fan over to the outside
and then at that point we should be ready to do our final test after measuring the window i'm
cutting this board so that way i can insert it in the window only when i'm running the resin printer
this mount is for the air output hose i'm just going to mark this and then cut it out
a few wood screws here will hold everything in place
the blower fan fit perfectly on the board and it keeps everything all nice and neat
after i attach this small piece of hose for the output all we'll have to do is put this
in the window and then we will attach the main hose coming from our enclosure
attaching the main hose was really easy these hose clamps work extremely well for
creating a good seal so that way all of the smell stays in the tubing and vents
outside i'm really pleased how well this works and hooks into the window
okay so i've got everything all set up here now and it's working perfectly so the hose goes all
the way outside and as you saw i have a board that i can put in and out so the 3d printer is now in
here and i'm storing the resin in here as well at the very least it will help contain that smell
now what i'm going to do to test this out and more or less prove the theory that it should
uh keep all the smell out is i'm going to open this can of resin right here and we're going
to put this can of resin in there and then i'm gonna seal it up and i shouldn't smell any resin
and i'll i'll give it a couple of minutes and then we'll be right back all right so i gave this about
five or ten minutes and i went and checked the other side i i really can smell the smell of resin
on the output itself so this is working exactly like i wanted it to uh the air is coming down
from the top coming down here and then right out and it's getting pulled all the way outside
i can't smell it at all in here so this works really really well and i'm very pleased with
how this project came out it was really simple i have download links down in the description
for this on amazon that i purchased here and parts for really the entire project you can build this
thing for under 200. i think it's a little over about 150 but under 200 and you can have your own
negative pressure environment and if you wanted to go with a larger one of these the uh 200 cubic
feet per minute is more than enough to pull all the air out of here uh you could go with a larger
environment and you could put multiple 3d printers in there if you wanted to but this is really a
great solution i'm very pleased with how this came out so um that is going to be the end of today's
video if you liked it make sure you mash that like button and don't forget to share and subscribe so
you don't miss any of my upcoming videos and i want to thank all of my patrons and the people
in the discord because without you guys these projects wouldn't exist and i'm really pleased
with how this came out and i'm glad to be adding uh resin printing to the 3d printer channel or two
makers mashup we do far more than just 3d printing but i want to thank everybody for all their
support in helping make projects like this happen so with all that said we'll see you guys next time
you