But thats the bit that kept me awake at nights trying to figure it out!

The trick was to wrap everything around a 2" mandrel [pipe] in reverse order [Starting with vac bag and ending with lay-up, poke it inside the 4" tube and then get it to stick/expand to fit. the 2" tube then is pulled out.

You can just see the 2" tube with the disposables already around it in the picture on the website.

I did it in about 3 hits because the pre-wetted carbon is very clingy and difficult to expand if too much is laid up at once.

This is a pretty half-arsed garden shed method and would never get used in any sort of production, but suits the one off approach.
Contrary to what others state, a large chunk of money was saved by doing this, that then went to pay for other parts of the build.

Paul f32#81

teamvmg.weebly.com