[TowerTalk] Control and coax cable removal question

[jimlux]

On 10/14/20 11:14 AM, bemeier at bellsouth.net wrote:
> In the process of reducing my tower / antenna farm there are now several
> control and coax cables that I would like to remove.  The problem here is
> they are fed from the outside of the house to the inside through a PVC
> conduit which I sealed with spray foam.  (Was a great idea at the time.  No
> critters, no hot/cold air, etc. for 14 years.)  However, I can't get the
> cables out because the foam is holding them firm.  In addition to the
> outside / inside conduit, I also have one between the crawl space and a
> closet used to route the cables to the ham shack.   The length of each of
> these foam dams is roughly 6".
> 
>   
> 
> I have tried a long screwdriver and got some out.  I also tried different
> diameter crochet hooks but they did virtually nothing.  I don't have any
> other mechanical ideas that won't damage the insulation.
> 
>   
> 
> Does anyone know some type of a solvent (or other method) that would
> dissolve the foam without hurting the insulation on the control / coax
> cables?
> 

if you've got a chunk out that you can test, you can try things like 
acetone or paint thinner or white gas. (obviously these are all 
flammable.. be careful, especially with things like acetone.