Exhaust Fan - Router Forums
LinkBack Thread Tools Display Modes
post #1 of 5 (permalink) Old 06-26-2014, 10:05 AM Thread Starter
Registered User
berry's Avatar
Join Date: Oct 2005
Country: United States
First Name: Berry
Posts: 300
Default Exhaust Fan and Wiring Question

I'm remodeling a bathroom in our house and I'm installing a new and better exhaust fan. I need to cut the existing 3" sheet metal stack to fit the new fan. This is an in-the-wall unit.

How would you cut the sheet metal?

I have a reciprocating saw and one of those oscillating saws like the Fein. Maybe I should just use a hacksaw?

I have aluminum wiring in my house. I haven't done a lot of wiring in the house I had most project done by a licensed electrician. I've heard that when joining aluminum wiring to copper I should use Noalox but recently I heard that a special wire nut is needed with wiring aluminum to copper. Would one of you experts let me know the truth.

Thanks for reading and sharing you knowledge!

Exhaust Fan-vent1000110.jpg

May the grain be ever in your favor.

Last edited by berry; 06-26-2014 at 10:59 AM.
berry is offline  
Sponsored Links
post #2 of 5 (permalink) Old 06-26-2014, 10:51 AM
Registered User
DaninVan's Avatar
Join Date: Dec 2011
Country: Canada
First Name: Dan
Posts: 15,067

Berry; funny you should ask that, I just retro-fitted two last week (SWMBOjr new/old house).
My suggestion, seeing as the wall's open anyway, is to remove the pipe back to the first available connection and switch to that flexible aluminized vent ducting.
Not the heavy type for dryers but rather the lighter hose style. Inexpensive and perfect for what you need.
DaninVan is offline  
post #3 of 5 (permalink) Old 06-26-2014, 09:49 PM
Registered User
N'awlins77's Avatar
Join Date: Feb 2011
Country: United States
First Name: Lee
Posts: 1,622

Berry, I've used the special nuts in the past (my house also has aluminum wire), but the last time I did some re-wiring, I couldn't find them at either HD or Lowes (where I've purchased them before), and I don't remember ever seeing the Noalox until this last job. So, I'm no licensed electrician, but I'm guessing that the Noalox has replaced the special nuts. But you definitely want to use one or the other. Not long after I bought my house, 20 something years ago, I changed the way our kitchen lights came on (two with one switch, changed to two separate switches) and replaced a pull chain switch in the laundry room to a switch on the wall. We were very lucky. I really shouldn't have been doing it myself, but with just purchasing a home, money was tight. So I did it myself. A few months after, the kitchen fluorescents started giving us trouble to turn on. I went in the attic to check things out and the connections had turned black, along with the box they were in. After telling my brother-in-law, who is an electrician, he looked it over and explained to me about tying copper and aluminum wires together. He said I was lucky I didn't burn the house down. Haven't made that mistake again!!
N'awlins77 is offline  
Sponsored Links
post #4 of 5 (permalink) Old 06-27-2014, 01:15 PM
Registered User
Join Date: Aug 2012
Country: United States
First Name: Dick
Posts: 802

Berry you can make your own 'special' wirenuts by simply filling them with Nolox or DeOx aluminum oxidation inhibitors. Messy but it will work.

Where there's a Willis there's a way!

Last edited by Willway; 06-27-2014 at 01:27 PM.
Willway is offline  
post #5 of 5 (permalink) Old 06-27-2014, 01:36 PM
Registered User
RainMan 2.0's Avatar
Join Date: May 2014
Country: Canada
First Name: Rick
Posts: 16,908

I would remove the sheet metal pipe and cut it with tin snips . Can you remove this pipe though?
If you sharpen a flat screw driver and hit it while it's placed on the pipe you will create a hole that you can get tin snips in .
I have a metal miter saw so I would be tempted to try that seeing as it's only 3" in diameter

The pipe while removed does come apart at the seam also . You simply snap it back together
RainMan 2.0 is offline  

Quick Reply

Register Now

In order to be able to post messages on the Router Forums forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Please enter a password for your user account. Note that passwords are case-sensitive.


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode

Similar Threads
Thread Thread Starter Forum Replies Last Post
dust collector exhaust grandfatherto11 Starting Off 22 12-23-2014 07:03 AM
Fan Plan DaninVan Lobby 5 10-27-2012 11:58 AM
Vacuum Exhaust Muffler MAFoElffen Tools and Woodworking 13 09-24-2012 10:54 PM
Craftsmen 1 1/2 hp Router impeller fan? mccasksl General Routing 1 06-30-2008 10:31 PM
Router Fan Bert Steed New Member Introductions 6 01-07-2007 09:10 AM

Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are On
Refbacks are On

For the best viewing experience please update your browser to Google Chrome