HOW TO UNGLUE JB WELD?
03-09-2009, 01:54 PM
#1
Senior Member
Thread Starter
My Feedback: (2)
Join Date: Aug 2003
Location: Blythewood,
SC
Posts: 1,256
Likes: 0
Received 0 Likes
on
0 Posts
HOW TO UNGLUE JB WELD?
Hello experts,
I glued an electric motor to a carbon fiber tube via JB weld and now I want to unglue it (the plane had crashed). I tried to pull it off but ended up reactivating my hemorrhoids instead. Please offer me your second to none advise please. Thanks !!!! DP
I glued an electric motor to a carbon fiber tube via JB weld and now I want to unglue it (the plane had crashed). I tried to pull it off but ended up reactivating my hemorrhoids instead. Please offer me your second to none advise please. Thanks !!!! DP
03-09-2009, 02:18 PM
#4
Senior Member
Join Date: Mar 2006
Location: Gowen,
MI
Posts: 142
Likes: 0
Received 0 Likes
on
0 Posts
RE: HOW TO UNGLUE JB WELD?
you can cut the bulk of it off with a hacksaw or dremel then grind some more then sand the final little bit off, I have never found anything that would melt it or decompose it. [
]
]
03-09-2009, 03:18 PM
#7
Senior Member
RE: HOW TO UNGLUE JB WELD?
From the J B Weld website itself...
"Q: How can I remove J-B Weld after it is fully cured?
A: When fully cured, J-B Weld can only be removed by grinding or filing it off, or by directly heating the product above the 600 degree maximum temperature threshold. "
An Exacto blade, held in the heat of of a propane torch..might get hot enough..but..I never tried it with J B Weld.
regards, Rich
"Q: How can I remove J-B Weld after it is fully cured?
A: When fully cured, J-B Weld can only be removed by grinding or filing it off, or by directly heating the product above the 600 degree maximum temperature threshold. "
An Exacto blade, held in the heat of of a propane torch..might get hot enough..but..I never tried it with J B Weld.
regards, Rich
03-09-2009, 06:45 PM
#9
Member
Join Date: Nov 2004
Location: Buffalo Junction,
VA
Posts: 91
Likes: 0
Received 0 Likes
on
0 Posts
RE: HOW TO UNGLUE JB WELD?
It's easy, diffenteral expansion is the answer :: Put the whole thing in the freezer overnite then heat the metal quickley to 200f or so. metal plastic or metal wood will shear themselves apart when the metal expands faster.
03-10-2009, 07:06 AM
#12
Senior Member
Thread Starter
My Feedback: (2)
Join Date: Aug 2003
Location: Blythewood,
SC
Posts: 1,256
Likes: 0
Received 0 Likes
on
0 Posts
RE: HOW TO UNGLUE JB WELD?
ORIGINAL: Bill Teller
It's easy, diffenteral expansion is the answer :: Put the whole thing in the freezer overnite then heat the metal quickley to 200f or so. metal plastic or metal wood will shear themselves apart when the metal expands faster.
It's easy, diffenteral expansion is the answer :: Put the whole thing in the freezer overnite then heat the metal quickley to 200f or so. metal plastic or metal wood will shear themselves apart when the metal expands faster.
Are you serious about this one? DP
03-10-2009, 07:15 AM
#13
My Feedback: (1)
Join Date: May 2003
Location: Orangeville, ON, CANADA
Posts: 8,658
Likes: 0
Received 2 Likes
on
2 Posts
RE: HOW TO UNGLUE JB WELD?
ORIGINAL: Dai Phan
Hello experts,
I glued an electric motor to a carbon fiber tube via JB weld and now I want to unglue it (the plane had crashed). I tried to pull it off but ended up reactivating my hemorrhoids instead. Please offer me your second to none advise please. Thanks !!!! DP
Hello experts,
I glued an electric motor to a carbon fiber tube via JB weld and now I want to unglue it (the plane had crashed). I tried to pull it off but ended up reactivating my hemorrhoids instead. Please offer me your second to none advise please. Thanks !!!! DP
Mechanical means are the only practical method I can suggest outside of a chem lab.
MJD
03-10-2009, 10:13 AM
#14
Join Date: Jun 2007
Location: Grand Blanc,
MI
Posts: 536
Likes: 0
Received 0 Likes
on
0 Posts
RE: HOW TO UNGLUE JB WELD?
I would second the suggestion of a Dremel. The heat application, if not careful, could damage the motor. Lock the whole thing in a vise and go at with the smallest bit you have on a dremel and just cut it away. I am assuming that your aim is to save the motor and the rest is expendable.
03-10-2009, 03:17 PM
#16
Senior Member
Join Date: Sep 2008
Location: Covington,
WA
Posts: 505
Likes: 0
Received 0 Likes
on
0 Posts
RE: HOW TO UNGLUE JB WELD?
ORIGINAL: Dai Phan
Are you serious about this one? DP
ORIGINAL: Bill Teller
It's easy, diffenteral expansion is the answer :: Put the whole thing in the freezer overnite then heat the metal quickley to 200f or so. metal plastic or metal wood will shear themselves apart when the metal expands faster.
It's easy, diffenteral expansion is the answer :: Put the whole thing in the freezer overnite then heat the metal quickley to 200f or so. metal plastic or metal wood will shear themselves apart when the metal expands faster.
Are you serious about this one? DP
I'd also try wacking the joint with a sharp chisel, when the assembly is very cold. The steel and carbon fiber should be relatively unaffected by the cold. Hopefully, the JB weld will be brittle.
jack
06-23-2009, 07:04 PM
#21
RE: HOW TO UNGLUE JB WELD?
On some engines I JB Weld the carburetors in and if the need arises to remove the carb, I just use your standard $19.99 heat gun.
I would most likely use a cut-off wheel to release the electric motor, shouldn't have to harm anything.
I would most likely use a cut-off wheel to release the electric motor, shouldn't have to harm anything.
