Tec7 foolishness

PabloPicasso

PabloPicasso

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Ok, so I've often said tec7 is a great sealant. Which it is. It's also a great adhesive.

So how can one remove a bolt sealed with tec7. Will heating the long end break the seal? Perhaps heating the head with a soldering iron might be more controlled?

Might be possible to bring off the bolt, or drill it out through the head, but removal seems an easier idea.

Anyone tried to do this, and what worked?
 
Turning the bolt should tear it off. I'm slowly working my way around rebedding the leaking mooring cleats (when the weather is conducive, which it isn't much). It's not Tec7, but something else that was gunked down the bolt holes there. I undo the nuts at the bottom, then force the cleat upwards about half a millimeter until I can get a putty knife between cleat and deck to cut off the sealant flush at the deck. This gives me usually enough wiggle room to get either one of the bolts up a bit, at which point I can get a socket wrench on its head and turn it. At that point the sealant always lets go after one turn. The other I can then turn by turning the whole cleat. After it lets go, the bolts pull out of the sealant relatively easily.

Not sure if heat will do anything else than smell bad. Did you try asking Tec7 yet?
 
If it was just silicone I think that would work. Tec7 is an adhesive as well, a very good one. It's not silicone but some type of polymer. CT1 is the same sort of stuff.

I see CT1 do a glue remover marketed as "multi solve'. Perhaps I'll try some of that if I can get some.
 
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I emailed CT1 today and had a prompt reply (I was amazed as its Sunday) but they gave no suggestions as to how to free parts glued with their sealant.

I've put a nut and bolt together with tec7 this evening and will try later this week to free them. I'll let you know how I get on.
My plan is to try mechanical means first. Failing that, Perhaps strong solvents (if anyone could suggest something that might work that would be helpful, and then heat from a soldering iron or blowtorch.
 
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PabloPicasso said:
I emailed CT1 today and had a prompt reply (I was amazed as its Sunday) but they gave no suggestions as to how to free parts glued with their sealant.

I've put a nut and bolt together with tec7 this evening and will try later this week to free them. I'll let you know how I get on.
My plan is to try mechanical means first. Failing that, Perhaps strong solvents (if anyone could suggest something that might work that would be helpful, and then heat from a soldering iron or blowtorch.
Click to expand...

CT-1 Multisolve no good then ? Bee's knees if you read their website!
 
VicS said:
CT-1 Multisolve no good then ? Bee's knees if you read their website!
Click to expand...

Here is CT1's reply

"I'm not sure what will break down Polymer adhesives without damaging the base material.
Normally you would need a very aggresive solvent. Sorry I cant be of assistance. "

I did specifically ask about multisolve.
 
Well I was down at the boat on Saturday (cold but dry) and we the help of a pal undid the 4 bolts holding the rudder on. I needn't have worried, 3 came undone relatively easily. The 4th after applying gentle heat from a butane pen soldering torch.

It seems tec7 does not glue metal to metal very well, but was an first class sealant. Especially given the damp conditions under which it was applied originally

Would. Use it again? Yes.
 
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