I get the plywood at Michael's. It's not super cheap (like, 5+ bucks for a piece that I can get 4 pieces out of), but if you get a 40% off coupon ahead of time, it's a little more reasonable.derbypain wrote: Where do you buy the 1/64" Birch plywood? Having some difficulty in the Dallas area finding it. Not at Hobby Lobby or any of the major hardware locations.
Since you are using basswood for the body and not pinewood do you not have a body twist concern? ... I noticed many will put in Balsa ribs or even blocks in the large hollowed area of the Pinewood so just curious.
Last question do you drill your axle holes prior to attaching the 1/64" birch plywood or after?
I find that the bodies stiffen up quite nicely after the plywood has been glued to the bottom. I'll also have a top cardstock layer as well, which will add a little structure. That said, inserting balsa inserts is definitely not a bad way to go, and really does make the car feel a lot more solid without adding much in the way of weight at all. Something else I've done is to cut support ribs out of balsa skewers and epoxy them into the hollow space. Super light and super strong.
I drilled my holes after, but I'm also a goofy bent axle guy, so I'm not as paranoid about warpage ruining my alignment. Giving the thin basswood "skeleton" a coating of CA glue after cutting might help reduce the warp effect.