[secant0give]

I laid up another wing early this morning. I thought I might Change the colour scheme on this one to Red and yellow on top and black and white on the bottom
It should be reasonably easy to orientate both by the colours and by the design being different top and bottom. There’s nothing like having good orientation at over 200Ks 

Here’s the stencils I used for painting the inside of the top and bottom plastic sheets. I didn't tape them down I didn't want to risk upsetting the wax I put on the sheets so instead I used 8 and 10mm nuts to weight them down

   

   

This close up shows the glass cloth that forms the aileron hinge, It’s temporarily held in place with a light mist of No 77 spray adhesive (made by 3M) When it comes out of the vac-bag it will all be one piece.

   

Here is a photo of the unidirectional glass that will form the span wise reinforcement for the wing. It sits right on top of the 3 pieces of 1.5mm ply that are inserted into the foam core
You can also see the 4oz cloth cut on the bias folded around the LE. It’s very much easier to fold around an edge if it’s cut on the bias. Both are temporarily held on place with good old No 77. When it’s wet out the epoxy just seems to absorb the No77 and you’d never know it was there. Remarkable stuff!!

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I’ve got my Vac pump set up so it’s only pulling about ½ an atmosphere I don’t want to go too low for two reasons firstly I don’t want to overly compress the foam core and secondly some epoxies can release volatiles if the pressure goes too low and this stops them from curing properly. Some epoxies handle vacuum quite well too. But better safe than sorry 

   

Here’s the the wing in the bag top side up

   

And here’s the bottom, the trailing edge gets about 10mm trimmed off it so the black strips will go all the way when it’s finished.