expanding foam incident

It turns out the non-empty can doesn't *always* self-seal when you take it off to clean the gun.
<
http://www.ducksburg.com/diy/2017-12-foam.jpg

Fortunately I was doing this in the basement & had already put a piece of scrap plastic down on the floor, & had a bin handy. (And I have a spare bin, now in use. The photo is outside --- I waited till it had all set before carrying it out through the house.)
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload
On Tue, 05 Dec 2017 12:19:33 +0000, Adam Funk wrote:

You mean you didn't have a handy canoe? :)
--
My posts are my copyright and if @diy_forums or Home Owners' Hub
wish to copy them they can pay me £1 a message.
  Click to see the full signature.
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload
On 2017-12-05, Bob Eager wrote:

I suppose I should've put "minor" in the subject, as expanding foam "incidents" go.
The only losses from this one were the basement bin (actually the bin from a shredder that died years ago) and the cost of part of a can of foam. No carpet, clothes, hair or other significant damage.
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload
Bob Eager wrote:

You don't mean like this bloke?
Peter Parry wrote on the Subject of the Expanding Foam
A friend of mine once built a canoe. He spent a long time on it and it was a work of art. Almost the final phase was to fill both ends with polyurethane expanding foam. He duly ordered the bits from Mr Glasplies (an excellent purveyor of all things fibreglass) and it arrived in two packs covered with appropriately dire warnings about expansion ratios and some very good notes on how to use it. Unfortunately he had a degree, worse still two of them. One was in Chemistry, so the instructions got thrown away and the other in something mathematical because in a few minutes he was merrily calculating the volume of his craft to many decimal places and the guidelines got binned as well. He propped the canoe up on one end, got a huge tin, carefully measured the calculated amounts of glop, mixed them and quickly poured the mixture in the end of the canoe (The two pack expands very rapidly). I arrived as he was completing this and I looked in to see the end chamber over half full of something Cawdors Witches would have been proud of. Two thing occurred to me, one was the label which said in big letters: "Caution - expansion ration 50:1" (or something similar) and the other that the now empty tins said "approximately enough for 20 small craft" Any comment was drowned out by a sea of yellow brown foam suddenly pouring out of the middle of the canoe and the end of the canoe bursting open. My friend screamed and leapt at his pride and joy which was knocked to the ground as he started trying to bale handfuls of this stuff out with his hands. Knocking the craft over allowed the still liquid and not yet fully expanded foam to flow to the other end of the canoe where it expanded and shattered that end as well. A few seconds later and we had a canoe with two exploded ends, a mountain of solid foam about 4ft high growing out of the middle, and a chemist firmly embedded up to his armpits in it. At this stage he discovered the reaction was exothermic and his hands and arms were getting very hot indeed. Running about in small circles in a confined space while glued to the remains of a fairly large canoe proved ineffective so he resorted to screaming a bit instead. Fortunately a Kukri was to hand so I attacked the foam around his hands with some enthusiasm. The process was hindered by the noise he was making and the fact he was trying to escape while still attached to the canoe. Eventually I managed to hack out a lump of foam still including most of his arms and hands. Unfortunately my tears of laughter were not helping as they accelerated the foam setting. Seeking medical help was obviously out of the question, the embarrassment of having to explain his occupation (Chief Research Chemist at a major petrochemical organisation) would simply never have been lived down. Several hours and much acrimony later we had removed sufficient foam (and much hair) to allow him to move again. However he still looked something like a failed audition for Quasimodo with red burns on his arms and expanded blobs of foam sticking everywhere. My comment that the scalding simple made the hairs the foam was sticking to come out easier was not met with the enthusiasm I felt it deserved. I forgot to add that in retrospect rather unwisely he had set out to do this deed in the hallway of his house (the only place he later explained with sufficient headroom for the canoe - achieved by poking it up the stairwell. Having extricated him we now were faced with the problem of a canoe construction kit embedded in a still gurgling block of foam which was now irrevocably bonded to the hall and stairs carpet as well as several banister rails and quite a lot of wallpaper. At this point his wife and her mother came back from shopping...... Oh yes - and he had been wearing the pullover Mum in law had knitted him for his birthday the week before. Peter Parry. http://www.wppltd.demon.co.uk
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload
On 05/12/17 13:10, FMurtz wrote:

Excellent!
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload
That's absolutely hilarious.
Bill
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload
On 05/12/2017 13:10, FMurtz wrote:

http://www.diyfaq.org.uk/humour.html#foam
You should all have read it before...
Andy
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload
On Tue, 05 Dec 2017 21:21:59 +0000, Vir Campestris wrote:

I had. That was the reference.
--
My posts are my copyright and if @diy_forums or Home Owners' Hub
wish to copy them they can pay me £1 a message.
  Click to see the full signature.
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload
On Wed, 06 Dec 2017 00:10:56 +1100, FMurtz wrote:

Yes, but I didn't repeat the whole story as it's in the wiki.
--
My posts are my copyright and if @diy_forums or Home Owners' Hub
wish to copy them they can pay me £1 a message.
  Click to see the full signature.
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload
On 2017-12-05, Bob Eager wrote:

I knew that's what you were referring to, but I still laughed out loud reading it again.
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload
On Wed, 06 Dec 2017 08:01:05 +0000, Adam Funk wrote:

I try not to read it. The laughing hurts too much!
--
My posts are my copyright and if @diy_forums or Home Owners' Hub
wish to copy them they can pay me £1 a message.
  Click to see the full signature.
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload
On 05/12/2017 12:19, Adam Funk wrote:

One of the reasons I tend to leave the can on the gun until I am sure I am done with it!
--
Cheers,

John.
  Click to see the full signature.
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload
John Rumm wrote:

That isn't foolproof either ...
<
http://andyburns.uk/test/foam_leak.jpg

Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload
On 2017-12-05, Andy Burns wrote:

That's why I keep it in the basement, but I wonder if the dampness is causing the partial blockage.
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload
On Tuesday, 5 December 2017 17:16:14 UTC, Andy Burns wrote:

Someone missed out there, that would have been a winner for the Turner prize, if I were judging it anyway.
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload
On 2017-12-05, John Rumm wrote:

Normally I do (following advice here, probably yours), but it was getting a bit plugged up (only a very slow, narrow stream coming out, even with the knob turned all the way) & I had a can of cleaner.
I wonder if part of the problem is storing the loaded gun in a dampish basement, but (bearing in mind the photo of the leak) I'm not sure where else in the house it's safe to store it.
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload
On 06/12/2017 07:59, Adam Funk wrote:

I get the impression there is a bit of variability in how well these things stay sealed over time, and also how long you can get away with leaving it on the gun. With my (cheap nothing special gun) a week seems ok. You may have do a bit of unblocking - but not usually more than just slicing the glob of foam off the end of the nozzle.

The damp out to make it cure faster, but would not expect it would make it leak any faster.
That was quite a dramatic leak - that's not going to be welcome anywhere! Perhaps keeping it wrapped up in a sack or in some other container (large Tupperware style?) would be safer.
--
Cheers,

John.
  Click to see the full signature.
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload
On 2017-12-06, John Rumm wrote:

...

The problem I'm having isn't leakage --- the gun seems to get plugged up when not in use. It's just that the leakage photo would make me nervous about storing the thing "above ground" in the house. A loose plastic bag sounds good, then I could store it in a dry area.
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload
Could you not sell it to the Tate Modern? Just asking as cannot see it, but bet there is not much foam art about. Brian
--
----- -
This newsgroup posting comes to you directly from...
  Click to see the full signature.
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload
Brian Gaff wrote:

Shame you can't see mine, it looks like something that Roger Dean or H.R. Giger would be proud of ...
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload

HomeOwnersHub.com is a website for homeowners and building and maintenance pros. It is not affiliated with any of the manufacturers or service providers discussed here. All logos and trade names are the property of their respective owners.