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Originally Posted by TlkQ
This was my very first thought about this whole project about three months ago and may end up being what happens!
But Like I said I dont have the expertese to cut the hole and no camper place will do it. I got responses like straight up "no" and "we dont really like to cut holes in the side on RV's" I think there may be more to having a window than jsut having a hole. Like it needs to be supported or something.
here is smoke bomb test two~ with some make shift sides on that board, seems to work better but still not good enough. the excess smoke seems to shoot out the open sides so I feel like If I can trap it all in It would work ok. Im curious if jsut boxing this fan in better would help. Prol what I will try first since will be kinda minor construction compared to the hole in side of camper and installing the fan there.
http://www.youtube.com/watch?v=hzSKBxLJC44
also would love to see some working ventilation smoke bomb tests so I can compare !
If you could build a box and duct the fan to the top of the box that'd probably work. The issue you'll have with that though is you probably wouldn't be able to fold up your workbench.
I think I still could as long as hood hangs no lower than bottom of cabinets :) Im actually in a constant saftey break ;) staring at this and thinking right now!
Could you make removable walls that extend the hood down to the top of the actual bench? You want it to be as contained as possible.
Kinda what I was thinkin
but the hole in side of camper starting to seem best again, but thats prol just me not wanting to take the time to figure this out, Im an obstacle avoider sometimes, but this just needs tackled and beat into submission. maybe a walk through a homedepot would help?
the spot the fan is in now is crappy I agree and not sure If ducting a attic fan is good. the cabinets are def in the way. Im jsut worried i will spend alot of time building this enclosed hood and piecing it all together and it still wont work well. Dont have the time for that kind of fail again. what type of place would you call to have a hole cut in RV wall, lol or does anyone have any tips on doin it yourself.
I mean check out the wall. What material is it? Are there any support beams or anything running through? Should be as simple as a sawzall but I've never cut into an RV before..
think sawzall is not the right tool, you need like a real good saw that can cut cirlces and with a precise smooth cut. Still would love to hear ideas not Involving cutting hole in wall as well
but here is an old post from my mobile shop thread
I asked about installin fan in wall on RV site and a guy told me this and Kinda sounds doable since and I believe my walls are the metal frame walls, not sure why RV places dont wanna do it for me but hmmm..... decisions, decisions............ wanna hera yalls opinion on what you would do if in this situatuon. the board idea metioned above sounds easiest and cheapest @ this point but Im still open to suggestions and seriously consodering this option, but Im also in a Time crunch, all ready moved back depature and not wanting to do that again. Got One week, and this is only one of a million things im tryin to do this week lol......stressin out and my brain not functioning as well cuz of it I think........ thanks yall
~POST~RVFORUM.net
There is no standard construction for sidewalls, so it's a crap shoot. If your trailer has a metal frame, there are probably large gaps between the vertical supports and the open areas between are just two skins with foam insulation between. No problem to cut a hole, unless a piece of square metal tubing just happens to be in the way. If wood frames, the studs are probably closer, but still not 16" centers like a house. And wood studs can be cut if needed.
You need to tap the walls to try to locate where the uprights are and gingerly cut out between them. I'd start with a smallish drilled hole so I could get a look/feel inside before expanding the hole to fan size.
Obviously the exterior has to be sealed. Any good RV caulk should do the job - I'd probably choose ProFlex RV in the clear formula for the exposed edges. If you need a sealer to sandwich between the fans outer flange (it does have one, I hope?) and the sidewall, the butyl (or similar) tape sold in mobile home shops and some hardware & lumber stores is good. Sometimes it is known as window seal tape or putty tape. And sometimes colloquially as "monkey poop" or similar graphic names.
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http://www.rvforum.net/SMF_forum/ind...?topic=38061.0
link to thread I started about this previously
Still wanna hear other Ideas if anyone has any! :) :turtle:
A sawzall can and will do the job right if you have the right blade.
The next best thing would be a jigsaw, with the right blade.
I'm not suggesting you do a crappy hack-job.I'm saying you can do this right.
Home Depot rents tools, not sure if they have what you need as far as blades go, so you'd probably end up buying a $10 blade.
I know it sounds sketchy, but Yes, I have considered cutting a hole in my car myself, and I WAS very hesitant at first.
If I find a sun-roof for $75 again, I'll cut that bitch myself.
Drill two holes side-by-side, insert saw blade,commit. If you scout out the area, you'll be able to miss any support beams by shifting to one side or the other.
Hope we can ease your worry about cutting your RV for your own safety.
after rereading the RVforum thread I made Im startig to feel confident about it. And I think If and when, if ever we do get rid if this I can also install a window since I will feel more confident with doin so. Is my 1350cfm attic fan good enough or Do I need a bigger Fan? and do most people agree that this is best option. I would still have all my storage, and building hood will elimate cabinets and hooks on ceiling that bikes hang from while traveling. and even if I build hood the fan is still placed in a crappy spot.
Bingo!Quote:
Originally Posted by turtleglass
Same solution for glass bench.
Elad
I agree!
But now Im worried about the wall idea becaue someone who has been living in Rv's blowing glass told me that most nice RV parks will instantly reject me if I have fan in wall like that. Not sure why though :(
Im a big fan of fan in wall right now but they suggested I do this but not sure exactly what they are describing~
Fan in wall of rv instantly gets you rejected from most nice rv parks...
Incognito is best...
There is a 2000+cfm inline at target online for a smokin deal...
Vent out floor... Run hollow wall at 2-3 depth f...or getting all cfm to hood and to fireproof/hypercool wall...use hardibacker for wall.
In rv... That kinda flow will be super overkill... So put fan controller for dining room fan for days your not needing that flow...Put fan directly up-down on hole under bench so you only need ducting to hollow wall and not for exhaust... Will reduce loss from "static pressure"... I got what I described in a trailer, and it was in the back room of an rv before that... Always using a fan on floor with hole in floor with duct to wall 2-3 inches off backwall(hollow and sealed to vent hood) to get air from hood...
~ but still with this set up I loose my cabinets and my bicylce storage and not sure how it would work with table folding up so bikes could get in.
this is the reason I guess they advised against fan in wall.~
Glassblowing is heavily frowned upon in resorts with the electrical you need... Fearmongers. No matter how nice the rv... We have a nice 38 foot coach with basement and brand new toy trailer... They just don't accept your rent if they find ...your flameworking more often than not... Rvs are made of firewood, and they don't want ya burnin down the park... Just be low-key.
And ya... Hollow wall beats fan in wall any day... Not flaming your fan motor is good, not having outside wind directly at your fan change the flow is great!...
Hang the bikes on the ladder? ... Frontbumper hitch rack for bikes?...
Makes sense.. Did that guy say he has an RV with a freaking basement??? I don't really follow the hollow wall thing but venting out the floor may work. I'd make sure there was like a 90 degree turn under the rv so the heated gases don't try to rise back up into the RV
I guess He says hollow wall prevents heat buildup on wall in front of torch and also keeps from reducing your airflow, I guess ducting would hinder airflow. I feel like this guy knows what he's talking about and Since he has been doin what Im tryin to do for over ten years now I gotta listen to him I think!
I'm just concerned about there being a build up of warm toxic gases underneath your RV. If you don't direct them out from under it in a safe direction it's going to rise like warm air does and seep into potentially the living spaces of your RV. This is why I said you'd want atleast a 90 degree at the end of it to direct the gases out from under the RV.
The problem with venting down is that warm air rises (convection) and its going to float upwards under whole length-width of RV looking for a place to rise higher to escape that means whole underside of RV may be exposed to exhaust gasses.
Only real solution is to go through upper cabinet and straight up in "most traditional" sense of "stove hood" vent.
Elad
I hear what yall are sayin for sure! Im so glad yall are here to help me think this through !!!!!! :) :turtle:
and I still wanna see a smoke bomb test with workin ventilation, please, please, please, someone bust one out :) :turtle:
If you could get the wood sheet above you to slant toward the fan instead of away from it, that would help collect/direct the fumes towards the fan. You can see in the first video how the smoke bomb rolls back and shoots to the left (or towards your head if you were sitting, working) and the sheet directs the smoke away from where you want it.
The yellow bomb seems to be more accurate representation of how things would really be since it's stays pointed forward.
Keep in mind that with your torch running it will change things a little due to convection. I'd like to see this test with your torch running.
How far way is the stock vent fan from the wall in front of the workstation? I'm guessing it's in the middle, hints the sheet sloped to it. Looks like some of the smoke isn't being exhausted correctly due to turbulence caused by the bottom corner of the cabinet. That along with your fumes being pulled up and back over your head. Vent hoods, for the most part, have the intake in front of you
so there's a breeze to your back, sort of
Seems like either a hole and fan in front of you, under the cabinet, or removing the cabinets, installing a fan and having the hood/sheet sloping forward instead of behind you, are your best options IMHO
Not sure if I can find any smoke bombs this time of year but I'll try and give it a go.
hey turtle i have an rv too and will be mounting a roof vent into it. its a 24' winnebago class c. its awesome, i am traveling in it too right now but working outside or in other peoples shops so i can understand your frustration.
you have to vent out the side or the top, venting through the floor is the most work and not the best. when you take down the cabinet you will notice how it is attached to the side of your trailer. the screws holding the cabinet up are drilled into the studs, this is how you know where the studs are. cut where there aren't studs. a sawzall will be fine, jigsaw will give you better corners but take longer. you do not need to make a perfect cut because any windows you put into it later are going to have flanges that will cover things up, like trim.
good luck
idk man i think makeup airflow is probably the way to go really... especially if you are just getting a littel bit of smoke coming out.. because you have to think of the flow... if there's negative pressure in the cabin, the smoke has no where to go but out... but the intake has to be more than the output.. and is probably best being low to the ground... and better if you/your torch are between the flow pattern from intake to output.. the fan being in the middle of the celing makes it interesting because i feel like even if you have enough airflow, it's still going to be pulling the vapor kinda up over your head, you'll still be breathing in the path of it and breath some in even if it does get all sucked out instantly, but that's not as bad as it building up more in the room..
I do smoke lung tests many times a day.. works great.. ;)
http://www.youtube.com/watch?v=XNs08fYnIqg
Have you seen this one on youtube yet?
Note the last comment made by Mauiglassblowing. He makes a sound argument!
This is the best advice for the easiest fix to your problem. Angle a plywood or metal sheet the oppisite way would be very similar to having a hood. The right angle would help channel/direct/force smoke and fumes away from you. I use this same concept in my shop.Quote:
Originally Posted by Blue Ridge Rider
I regularly bl;ow smoke clouds from other side of the room it works heheheh,,
MY ventilation works with all things I smoke even a fatty , I guess just smoke bombs are too much. I need a hood bottom line I think the cabinet will be gone and still vent out the same hole. Maybe new fan.
Turtle check this out. It may help a little.
http://www.breathepureair.com/kitche...ust_hoods.html
My non glassblowing friend totally built me a sweet vent hood. Check out the new Video. HE's getting free lessons tomorrow ;) :turtle:
http://www.youtube.com/watch?v=1E675-iYjWs
Sweet you got it worked out. Good luck on your journeys!
Thanks brother, feels great to get it worked out. :) :turtle:
I remember my first test. Shop smelled like shit for the next day or so. Really sucked :(.
After the first bomb I decided to hold the second with a burnt kevlar glove to make sure it wouldn't fly around and mess up my bench. That solved the problem.
I set off 2 at once and vents cleared it out immediately. I'd consider upping your fan strength from the looks of the first video. It's close but a more legit fan will clear that smoke much more immediately.
I would of filmed mine if I had a go pro or something sick
Awesome for helping wagon, but this thread started two years ago, lol. Turtle has since gotten up to snuff, lol, and said so right above you in Feb 2011. Surprised the video link held up.
As a new poster here, try to keep an eye on the age of threads you search for or that are buried, lol.
No harm no foul :D
So i add something useful to the thread, Sticking a smoke bomb in a 20 oz. bottle lid like a marble holder keeps it from rolling around on the bench.
I usually use the smoke from the burnt offerings, oxen that I offer to THE LORD.