rolling band instead of vacuum

[sharlok]

Hey All.  I want to make Carbon fiber tube at my home. But unfortunately,  i don't have a vacuum machine with 3 bar. As you can see below,  The document advices 3 bar for 4 layers. Since a tube form not a complex shape, I can roll heat resistance band tightly around the tube  for curing before getting it  in an oven.  To you, Does it affect as much as 4 bar vacuum?

 

 

 

 

Edited September 15 by sharlok

[lo_0l]

If I understand what you're trying to do correctly, this is essentially how cello wrapped carbon fiber tubes are made.

Check out this video:

 

[John Kimball]

1 bar is equivalent to 29 inhg. This can be achieved at sea level, but nothing more. 3 bar is not achievable with vacuum. This is equivalent to ~42 psi. This can only be achieved with mechanical pressure (press or clamp) or a vacuum bagged and autoclave cure process. Even cello wrapped parts, like the video above, will have limits on external pressure and is entirely controlled by the number of wraps you can put on the part and the tension of the cello tape.