(1) Hot wire method: Decide on the locations of the leads. Make up some ply templates with narrow vertical slits in them to attach to the ends of the cores. Plan to work from the core undersides. Drop the hot wire through and hold it in the desired vertical location so it burns out a tunnel. Practice on scrap first. You may want to make a small round hole at the bottom of the vertical slits. Clean out the tunnel. Fish the leads through. Plug the ends of the tunnel where no leads will go. Spackle over the opening of the narrow slit or fill it with thin balsa and trim to the core.
(2) Routering method: Determine a location where to position a Dremel router attachment to cut slots 1/8" wide and say 3/8" deep. Tape a straight edge on the core underside to guide the cut. Without changing the position of the router, attach the metal, flat-headed Dremel accessory cutter that is 5/16" wide. I can't recall the part number, maybe #115. Set it to make a cut a hair under 1/8" deep, going beyond the ends of the first cut. Clean out the chips. Snugly fit a strip of medium balsa in this 2nd cut to conform to the core contour. Under vacuum, bagging epoxy will likely meander and plug the first slot. Best bet is to wax up the leads, press them into the first slot, doubling back some excess lead to solder to. Record which direction you doubled back. Centered on the "bottom" of the balsa strip, apply1/8" wide masking tape or trim tape. Smear epoxy over the bottom and sides. Pull away the masking tape and press the strip into position. Pick up oozing epoxy with alcohol on a rag, so the surface will be smooth. The intent of this fussing is to seal the slots so bagging epoxy can't get in from the edges and to avoid glueing the strip to the lead. If you do not think the meandering bagging epoxy will plug the slot in spite of the precautions, be prepared for a liberal education. After bagging, locate, open and extend the loops to solder in or otherwise attach the servos and connectors. ----- Original Message ----- From: <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Sunday, March 31, 2002 10:27 AM Subject: [RCSE] Aileron leads in bagged wings > I am starting to design a slope plane with fiberglass bagged wings. Until now, all my bagged wings I have made have been small polyhedral hand lauunch gliders. I was just curious as to what was the best way to get the aileron leads out to the tip. > Thanks! > RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED] > RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED]
