Thursday, July 10, 2014

Readying Parts For A Primer Session

Although not having updated the Blog for quite a while, progress has been made … in that most all the loose parts have been separated (if necessary), deburred, and in a few cases dimpled or machine countersunk as necessary. Most of the work sessions leading up to the Holiday weekend were small and did not merit a daily entry into the Blog.

The weather earlier this week has not been good for painting but tomorrow promises to be a good day for blowing the dust off the HVLP spray gun and laying down some Akzo primer. I actually was hoping to do that today but while going through some paper parts bags discovered more items that needed to be prepped for primer in addition to the previously mentioned trim servo mounting components shown in some of the following photos.
Deburring the edges of one of the trim servo’s F-1287B doublers with a file.
Deburring the edges of the F-1287A servo tray with the 1" ScotchBrite wheel.
Separating the F-1258 rudder cable links with a hand hacksaw.

After deburring all of the parts that need priming during the upcoming primer session, went through the plans and identified those parts which require dimples or machine countersinking … since it is best to dimple or countersink prior to priming, those parts were processed accordingly based on their requirements.
Dimpling the nutplate rivet holes on the F-1228 seat floor cover with the pneumatic squeezer.
Machine countersinking the nutplate rivet holes on the F-1294C tabs used for mounting the tail cone faring.

With the exception of the baggage bulkhead cover slated for a modification prior to priming and a couple of miscellaneous small parts that can be easily primed with an air brush, everything should be primed by tomorrows end. Hope it is not really hot tomorrow, because it looks like the paint suit and respirator will be my attire for the day.
Everything on the workbench is deburred, dimpled or machine countersunk if necessary and now ready for an Acetone cleaning, scuffing with a maroon ScotchBrite pad, another cleaning with Acetone and on to primer.

Will post a detailed description of the baggage bulkhead cover modification in an upcoming post after some parts are cut from raw aluminum stock and bent to shape on a metal brake.