[Collins] 75S panel overlay repair

[Dr. Gerald N. Johnson]

Pliobond is a rubber based contact cement with a few minutes working 
time. The chart of sizes and properties at McMaster-Carr shows it has 
about 3 minutes before it starts to cure and cures to maximum strength 
in 14 hours. Its contains much fewer harsh chemical solvents that upset 
breathing and damage paints and plastics than classic contact cement, 
though there has been a water based contact cement for counter tops that 
lacks those harsh chemical solvents for decades too. Probably the only 
one allowed in California these days or for the past couple decades. For 
the S-line panel repair, any should work because that paint is epoxy and 
sturdy.

The water based contact cement works great for stacking polystyrene foam 
sheets to make model hills and mountains. The classic solvent based 
contact cement turns polystyrene foam into a liquid blob. I've not tried 
Pliobond on polystyrene foam.

I'd apply a good noncleaning paste wax to preserve the panel finish, 
carnuba would be super great but hard to apply and polish on the 
textured surface. A car wax that cleans is probably not good for the 
peaks and the silk screens on the panel.

73, Jerry, K0CQ, Technical Adviser to the Collins Radio Association.

On 9/30/2014 3:49 PM, David Knepper wrote:
> Grant, use contact cement that you can purchase in a bottle from
> WalMart. Use a pair of clamps with a small piece of wood between the
> panel and the jaws so as not to mar the panel.
>
> Let dry at least overnight
>
> Good luck
>
> David Knepper - W3CRA/W3ST
> Collins Radio Association
> www.collinsradio.us (new)
> Join the CRA today
>
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