Silver soldering fail - How to recover? - Page 2 - Home Brew Forums
Home Brew Forums > Home Brewing Beer > DIY Projects > Kettles, Mash Tuns & Hot Liquor Tanks > Silver soldering fail - How to recover?

Reply
 
Thread Tools
Old 11-17-2013, 03:41 PM   #11
CCBrewer
Recipes 
 
Mar 2010
South Texas
Posts: 785
Liked 36 Times on 32 Posts


Quote:
Originally Posted by Bobby_M View Post
Another easy way to desolder is to heat until it's liquid then drop the keg from a height of 4 inches onto a concrete floor.


.....At times like these... I wonder... Is Bobby Fking with us.... to see if we will actually do it....


or is he talking from experience.... It's so out there I'm guessing the second


__________________
Primary1: Apfelwein (11/18/11)
Keg-1: SNPA 1/6
Keg-6: Soda Water
Thinking: Bavarian Hefeweizen, Centennial Blonde,
Swmbo Slayer,
MEADS LOTS

 
Reply With Quote
Old 11-17-2013, 04:29 PM   #12
day_trippr
Recipes 
 
May 2011
Stow, MA
Posts: 16,901
Liked 2844 Times on 2131 Posts


Quote:
Originally Posted by CCBrewer View Post
.....At times like these... I wonder... Is Bobby Fking with us.... to see if we will actually do it....

or is he talking from experience.... It's so out there I'm guessing the second
I was thinking the same thing...the experience part, not the F'ing with you...

Cheers!



 
Reply With Quote
Old 11-17-2013, 05:13 PM   #13
Bobby_M
Vendor and Brewer
HBT_SPONSOR.png
 
Bobby_M's Avatar
Recipes 
 
Aug 2006
Whitehouse Station, NJ
Posts: 23,149
Liked 1622 Times on 1050 Posts


Trust me, it works. No matter what I'm trying to get solder off of, as long as it can take a quick hit to the workbench, I do that rather than using wicking rope (this is a mesh of fine copper used to wick solder away from work). Just as an example, when building my test control box, the panel mount 120v outlet had solder on the spade terminals. I put heat on it, WHAM!!! no more solder on there. Of course be careful, wear eye protection and stuff like that. Hot solder splashing on you isn't fun.
__________________
Welcome to BrewHardware.com. I love you.
BIAB Large Mesh False Bottoms and SS HERMS COILS are IN!!
Chugger Pumps, Pump Kits, Camlocks, Sightglasses, Clear USA made Silicone Tubing, RIMS, Electric Install Parts, etc.

 
Reply With Quote
Old 11-17-2013, 05:16 PM   #14
jasonbickford
Recipes 
 
Apr 2013
Posts: 13
Liked 3 Times on 1 Posts


Quote:
Originally Posted by Bobby_M View Post
Another easy way to desolder is to heat until it's liquid then drop the keg from a height of 4 inches onto a concrete floor.
Thanks for the awesome responses guys. I'll see what I can do when I've got some time to mess with it. We tested it yesterday for kicks and it does hold water.

We used Harris Liquid Stay-Clean flux and Harris Stay-Brite silver solder. The pair worked amazingly well when we used enough, but the bad one was #1 out of 8 fittings. 2-8 look great.

I like the idea of dropping it a few inches. Since there won't be any flux on the oppose side of the keg wall and it'll be cold I'm guessing the flux won't stick.

 
Reply With Quote
Old 11-17-2013, 05:21 PM   #15
jasonbickford
Recipes 
 
Apr 2013
Posts: 13
Liked 3 Times on 1 Posts


Quote:
Originally Posted by Bobby_M View Post
Trust me, it works. No matter what I'm trying to get solder off of, as long as it can take a quick hit to the workbench, I do that rather than using wicking rope (this is a mesh of fine copper used to wick solder away from work). Just as an example, when building my test control box, the panel mount 120v outlet had solder on the spade terminals. I put heat on it, WHAM!!! no more solder on there. Of course be careful, wear eye protection and stuff like that. Hot solder splashing on you isn't fun.
I'm an Electrical Engineer so I've got some solder wick in my electronics repair toolbox but I didn't feel like using up $10 worth of wick.

Thanks again for the responses Bobby. When we first started moving to kegs from our stove-top partial boil setup we watched a bunch of your youtube videos. We actually bought our sight gauges and thermometers from you last week and plan on putting another order in soon. Keep up the great work, your wealth of knowledge has been greatly appreciated.

 
Reply With Quote
Old 01-02-2014, 03:17 PM   #16
jasonbickford
Recipes 
 
Apr 2013
Posts: 13
Liked 3 Times on 1 Posts


Hey guys, I figured I might as well post an update.

I followed Bobby's recommendation of dropping the keg and it worked great. Here's what I did:

1. Laid down a big sheet of leather on the cement to stop the cement from scratching my keg. This is pretty thin and firm leather that won't absorb much shock.
2. Heated up the keg and coupling until the solder began to flow.
3. Flipped it so the coupling was facing up and smacked it hard on the leather. As predicted the silver solder splattered on the other side but did not stick. It came off with a damp cloth.
4. Cleaned up the residual silver solder with increasingly finer sand paper until it was a nice clean surface for the coupling to pull through. Originally there was still a rough thin layer of silver solder.
5. Re-soldered a new coupler in the hole. The original coupler was looking pretty pathetic at this point. It was purple from the repeated heating and was covered in a thin coarse layer of dried solder.

Attached is a photo. I haven't scrubbed and cleaned it up yet but I'm very happy with the final result. It is perfectly water tight now.

Thanks for all the help!
Click image for larger version

Name:	photo (3).jpg
Views:	386
Size:	49.8 KB
ID:	169654  

3
People Like This 
Reply With Quote
Old 01-02-2014, 04:11 PM   #17
skemp45
Recipes 
 
Mar 2013
Scottsdale, Arizona
Posts: 249
Liked 40 Times on 28 Posts


Nice work!!
__________________
Shawn Kemp, Application Developer and Web Engineering -> RaspberryPints
_______________________________________________
Be Creative, Challenge the beer industry. You can do all of this, as the world and beer industry was made by people who are no smarter than you.

 
Reply With Quote
Old 01-19-2014, 04:53 AM   #18
bannerj
Recipes 
 
Sep 2012
Holland, MI
Posts: 253
Liked 12 Times on 11 Posts


My first attempt at soldering this evening was a fail too. Glad to find this thread...that it is worth desoldering and trying again. I'm thinking that I must not have had the piece completely clamped tight enough all around. I had a really nice solder all but 10 degrees. Then I tried heating it up and just closing up that gap...it kept eating solder. I added flux and it kept eating more solder. So frustrating.

 
Reply With Quote
Old 01-19-2014, 02:40 PM   #19
Chrisl77
Recipes 
 
Mar 2011
Jackson, New Jersey
Posts: 883
Liked 86 Times on 68 Posts


Where you putting the heat directly on/under the spot that was eating the solder? Try ruffing up around that spot with some sand paper and a little more flux then heat the pot near the spot and let the heat drift to the spot to slowly melt the solder. The key is to heat slowly and just enough for the solder to take. I had 2 joints with small problem areas like that and it worked out well for me. I even used this to seal up 2 rivet holes on a lid that I removed the handle off of.
__________________
Ocean County home brew club

 
Reply With Quote
Old 01-20-2014, 03:04 PM   #20
processhead
Recipes 
 
Oct 2007
Nebraska
Posts: 793
Liked 131 Times on 102 Posts


After cleaning the surfaces with sandpaper you need to wipe down everything with a solvent like alcohol.

Any residual oil, grease, wax, or other contaminate can keep the solder from flowing properly.


__________________
How hard can it be?

 
Reply With Quote
Reply
Thread Tools


Similar Threads
Thread Thread Starter Forum Replies Last Post
Empty kegerator, emerging from pipeline fail; suggestions for avoiding future fail Echoloc8 General Beer Discussion 6 02-15-2013 03:18 PM
Gone bad? or can i recover? GriffsBrews Beginners Beer Brewing Forum 11 11-05-2012 07:19 PM
Broke off the top of my hop bines! Will they recover? bmckee56 Hops Growing 9 04-30-2010 05:35 PM
Will my brew ever recover? johndeere Beginners Beer Brewing Forum 4 03-26-2010 01:24 AM
Question regarding brazing/silver soldering Skins_Brew Kettles, Mash Tuns & Hot Liquor Tanks 9 09-03-2009 08:19 PM


Forum Jump