Forums | Home Repair | Home Improvement | Painting | Interior Decorating | Remodeling | Landscaping


Go Back   DIY Chatroom Home Improvement Forum > Home Improvement > Plumbing

CLICK HERE AND JOIN OUR COMMUNITY TODAY...IT'S FREE!

Reply
 
Thread Tools Search this Thread Display Modes
Old 10-30-2009, 09:16 AM   #1
Newbie
 
Join Date: Oct 2009
Posts: 14
Share |
Default

How much solder??


an old plumber once told me whem soldering pipe to use for 1 inch pipe bend 1 inch of solder and use that much,3/4 inch bend 3/4 inches etc. now i just read that for 1/2 inch pipe use 2 to 3 inches??? thatseems like alot?? what to do???
geobckmstr is offline   Reply With Quote
Old 10-30-2009, 04:09 PM   #2
Member
 
Join Date: Nov 2007
Posts: 301
Default

How much solder??


Well, the math doesn't work out like that.

A 1/2" fitting has a 0.25 radius and 1/2" deep = surface area for solder of 1.17
A 3/4" fitting has a 0.375 radius and 3/4" deep = surface area for solder of 2.65
A 1.0" fitting has a 0.5" radius and 1" deep = surface area for solder of 4.71

It's not linear. If you use 1/2" for 1/2" fitting and are happy with it you need to use 1 1/8" of solder for 3/4" pipe and 2" of solder for 1" pipe to keep the ratios. Experienced plumbers know also, this means 3/4" pipe is over 2x harder to seperate dryfit connections than 1/2" and 1" connections are 4x harder (I don't recommend dryfitting 1" connections you will not have much luck being able to pull them apart no matter how much you try).

Last edited by Piedmont; 10-30-2009 at 04:27 PM.
Piedmont is offline   Reply With Quote
Old 10-30-2009, 04:15 PM   #3
Member
 
Join Date: Nov 2007
Location: Nashua, NH, USA
Posts: 6,781
Default

How much solder??


It's hard to say because the diameter of the solder strand varies from one brand to the next.

If a drop of solder should fall from the "bottom" of the joint then the joint should have been fillled and sealed with solder. Except that this might not happen when the pipe is inserted into the fitting from above. Then the best you can do is feed in a little more solder after you see silver all the way around the joint.
__________________
The average homeowner who lost his house in the Oklahoma tornadoes should move for good and not rebuild. Too much complexity watchdogging the contractor. Too much a chance to be defrauded.

Last edited by AllanJ; 10-30-2009 at 04:17 PM.
AllanJ is offline   Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not 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 Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
joint solder problem redss Plumbing 6 08-09-2009 04:52 AM
How to solder 2mm nuts DIYCUB Plumbing 4 04-09-2009 11:06 AM
Solder not working it's way to where I need it. tripower Plumbing 25 02-24-2009 03:25 PM
When soldering copper, what causes the solder not to "suck in"? Piedmont Plumbing 10 10-25-2008 08:59 AM
Solder for hot water heating system junkcollector Plumbing 2 09-12-2008 06:09 PM




Top of Page | View New Posts

Copyright © 2003-2014 Escalate Media. All Rights Reserved.