[Shop-talk] removing OLD duct tape adhesive from a windscreen

[Bob Spidell]

Thanks.  Noted for future reference.


I had to remove the pan on my Austin-Healey because I cracked it, right 
after an engine overhaul.  The builder had used black 'Right Stuff' to 
seal it instead of a gasket.  Well, he might as well have used epoxy, 
that 'stuff' is notoriously hard to remove (there's a photo on the web 
somewhere of someone dangling a SBC from the manifold with bolts removed 
and just the sealant holding it together).  I had to 'saw' through the 
stuff with a serrated kitchen knife; thought I would never get it off 
and made my elbow sore for months.  Of course, there was was residue of 
the sealant on the block; the 3M stuff softened and removed it.


Bob


On 9/16/2017 7:32 AM, Tim . wrote:
>
> Yes, it was not a true apples to apples comparison. Because kerosene 
> is so much cheaper than the  3M stuff, it would not have been cost 
> effective to soak the rags in the 3M product. But, I will add, while 
> the 3M didn't immediately do anything, the kerosene did start to 
> soften the hardened adhesive almost immediately, at least a little. 
> When I noticed this, I decided to do the rag soak.
>
>
>
> ------------------------------------------------------------------------
> *From:* Shop-talk <shop-talk-bounces at autox.team.net> on behalf of Bob 
> Spidell <bspidell at comcast.net>
> *Sent:* Friday, September 15, 2017 12:50 PM
> *To:* shop-talk at autox.team.net
> *Subject:* Re: [Shop-talk] removing OLD duct tape adhesive from a 
> windscreen
>
> Did you 'cover the surface in rags' then soaked with the 3M product?  
> If not, then it's not an 'apples to apples' comparison.   Soaking 
> rags, so the solvent doesn't evaporate before getting a chance to 
> work, is a good idea.  I think a lot of solvents--the 3M product 
> included--would work better with this technique.  What may work even 
> better would be to apply the solvent, then put 'saran' wrap over it to 
> prevent evaporation.
>
>
> I do apologize for the link to the 3M aerosol; 3M comes in pint cans 
> but I posted the link to the aerosol because it was at WalMart, which 
> I felt might be a convenient place to buy it (I only saw it on the 
> shelf at auto parts stores).  If you didn't use the whole can keep it 
> around; it does work well on a lot of glues; esp. the 3M upholstery 
> adhesive--aka 'yellow snot'--which is often used on upholstery and 
> seals.  It also works well on Weldwood 'Landau' adhesive, which 
> appears, and smells, very similar to the yellow snot.
>
>
> Bob
>
>
> On 9/14/2017 3:21 PM, Tim . wrote:
>>
>> Thanks for the replies all. The 3M stuff didn't touch it. $20 waste 
>> of money.
>>
>>
>> The winner was covering the surface in rags and soaking them with 
>> kerosene for a half  hour or so. I then sprayed MarineClean on small 
>> areas at a time, scrubbed with rag and paper towel and the crap 
>> slowly came off. Two hours later I am about 98% done.
>>
>>
>> tim
>>
>>
>

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