Equavalent material
03-10-2010, 03:44 PM
#1
Equavalent material
Disregarding weight, a model that I am working on, has a one and only fuselage bulkhead made up of 3/16 inch thick balsa. I only got one slab here and it ain't big enough.
Can I substitute in some 1/16 inch plywood, of which I got a bunch of, or is 1/8 inch birch plywood or 1/8 inch light plywood the same strength then?
Wm.
Can I substitute in some 1/16 inch plywood, of which I got a bunch of, or is 1/8 inch birch plywood or 1/8 inch light plywood the same strength then?
Wm.
why not take 3 pieces of 1/16th and epoxy them togeather? you're piece would be very strong and you could have the right size then.
03-10-2010, 05:06 PM
#3
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RE: Equavalent material
3 pieces of 1/16 plywood glued together with a wood glue like Titebond will probably be as strong and maybe even lighter. Cut the pieces so that the grain will run at right angles to each other. Also be sure to clamp the pieces together while the glue is drying.
03-10-2010, 08:28 PM
#4
RE: Equavalent material
ORIGINAL: Laird SS
3 pieces of 1/16 plywood glued together with a wood glue like Titebond will probably be as strong and maybe even lighter. Cut the pieces so that the grain will run at right angles to each other. Also be sure to clamp the pieces together while the glue is drying.
3 pieces of 1/16 plywood glued together with a wood glue like Titebond will probably be as strong and maybe even lighter. Cut the pieces so that the grain will run at right angles to each other. Also be sure to clamp the pieces together while the glue is drying.
Wm.
03-11-2010, 05:46 AM
#5
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RE: Equavalent material
Some models have bulkheads made from 3/32 or 1/8 pieces ( wide strips ) overlapped at the corners and then then the other side is filled in with another piece to make it flush. Makes a 3/16 or 1/4 bulkhead from little material. Best to make the main shape and then cut out the notches for longerons etc after glue has dried.
03-12-2010, 01:51 PM
#6
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RE: Equavalent material
Go with the 1/8 ply and just make the lightening holes larger. Or if there are no holes add them. The difference in weight from one single former will be negligable.
