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Building Tips and technical articles. => Paint and finishing => Topic started by: Larry Renger on August 23, 2013, 01:54:25 PM

Title: Old silkspan no good?
Post by: Larry Renger on August 23, 2013, 01:54:25 PM

I covered the vertical tail of a new model with some very light, but old silkspan.  It was fairly tight when I finished (dry covering).  After spraying, the covering wrinkled up like the inside of corrugated cardboard. The whole thing covered with fine, linear wrinkles.  HB~>

Any ideas?

I stripped that covering off and just went with SLC.

Title: Re: Old silkspan no good?
Post by: MarcusCordeiro on August 23, 2013, 03:57:50 PM

Did you put it on soaked wet?
If not, when you spray, it'll wrinkle for sure...

Marcus

Title: Re: Old silkspan no good?
Post by: Larry Renger on August 24, 2013, 06:22:42 PM

Way back when, you could dry cover with tissue and it would shrink tight. This was OOO super light material, and too fragile to do wet covering.

On another model I tried to use it wet and it fell apart. I guess it is just too old to be useful.

Title: Re: Old silkspan no good?
Post by: Gerald Arana on August 26, 2013, 07:25:39 PM

Hey Larry,

Why didn't you just put SLC over it? I'm thinking of trying your method on a Skyray that is about ready to assemble....We'll see.

Jerry

Title: Re: Old silkspan no good?
Post by: Larry Renger on August 26, 2013, 09:21:34 PM

SLC over it was the plan, but it was so wrinkled, I just removed it and went with unsuported SLC.  We'll see how that finishes up as it needs to be painted. 

This potential disaster is part of the ongoing P-51 electric review article for Aero Modeller. I am really looking forward to finishing the project!