RCU Forums - View Single Post - Black Magic v2 builder's thread! *Updated*
Old 12-21-2005 | 03:10 PM
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MHester
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Default RE: Black Magic v2 builder's thread! *Updated*

Begin by laying the core on the sheeting and making some marks just inside the honeycomb area. Remove the core and connect the dots; the inboard (larger) section is the area you will spread resin onto the skin. Don't spread resin in the honeycombed area, you'll defeat the purpose. if you didn't honeycomb, skip this step.

Spread a good quality laminating resin such as West systems, MGS, EZ Lam or similar onto the surface of the skin that has been treated with hairspray.

Use a folded piece of poster board for this. Spread it as thin as possibly, it should be darker but not soaking wet looking.

Take a glue syringe and lay a bead of resin on the core outlining the honeycomb pattern. The bead should be about 1/16" thick. Use 2 beads around the edges and tip.

Spread also a thin bead across the false rib and spars to make sure you get a good bond there.

Applying top skin first, lay the top shuck on teh flat table and line up the TE of the top skin into the shuck. Carefully lay the core on top of the skin and press gently.

Now apply the bottom skin, again lining up the TEs with both skins and the shuck.

Apply the bottom shuck and flip the whole assembly over, so it is sitting right side up on the surface.

Lay the piece of MDS board on top of the shuck, and go around and align the corners so that everything is in the correct place. A little tweak here and there is usually needed. But this step is critical, make sure it's straight.

Now apply weight to the top of the MDS board. You will need about 200 lbs per panel. '

At this point, check the LEs and TEs with a straight edge. It should be perfect, if not, shim it with poster board until it is.

Let cure overnight, and your wings are sheeted.