Bending plywood for skate ramp 1

[bbbobbb]

Does anyone know how to bend a 4x8 sheet of 3/8-1/2 thick plywood to a 48" radius ? I dont want to buy the expensive special "Bendy board" This is for a skateboarders half pipe. Thanks for reading.

 

[smcadman]

Use rows of kerf in the plywood. Look at

http://www1.diynet.com/diy/hi_tools/article/0,2037,DIY_13936_3108672,00.html

Flores

 

[PEinc]

Use multiple layers of thin sheets.

 

[SlideRuleEra]

You could try soaking the plywood in water for a day or two. No matter which thickness you choose, a typical plywood sheet will bend more readily across the grain of the surface plys than with the grain. Here is a link to the Engineered Wood Associations technical paper "Bending Plywood" (about a quarter of the way down the page)

http://www.apawood.org/level_c.cfm?content=pub_tch_libmain

You will have to register at the site, but the download is free.

http://www.SlideRuleEra.net

 

[bbbobbb]

Thanks alot that really helped out.