I made a swedge at work today to turn the aluminum beer bottles inside out to make an open top side vent double wall stove.. Im going to tweek it a little in the morning but so far it works great.. the strength is incredible after forming.. Im 210 lbs and can stand on it with no hint of bending..
Thanks alot for posting this.. ive been building the stupid things for 3 days now and cant stop.. Ive got em all over the place trying different designs and even used em to heat up ppls lunch at work ..
Ive never used aspen but i wouldnt use poplar.. Its a soft wood much like pine with alot nicer grain in most cases.. I have alot of hickory in storage in arkansas that I thought about trying to bend ..
You dont have to bag carbon.. you can lay it up just like glass. All the vacuum bag process does is remove extra resin and air from the layup which results in a stronger and lighter part.. Fiberglass can be bagged the exact same way and will be lighter as well. The bagging isnt as expensive as...
The only reason i use carbon as an example is because it enables you to use multiple layers of lighter cloth and result in a stronger part.. Fiberglass can be used in the same manner, it just has less strength and higher weight.. the techniques is the same.
The trick is covering all sides of the foam, not just the top and bottom. If the foam is totaly encapsulated in the carbon the strength becomes unbelievable and the foam becomes irrelevant but again, the time and expense makes it impractical.
Sorry its taken me so long to reply.. glass on foam can be made to be very light and strong if done right but its not cheap and is very time consuming.I built some test panels a couple of years ago of 1/2 blue board from lowes laminated with 3 layers of 3 oz carbon fiber on all sides that...
The foam works great for building a light, strong boat if done right..I havent built a canoe out of it but have built aircraft components and hovercrafts using similar methods and the strength is incredible if done properly ..