+x

 

oekmont - 6/9/2018 2:46:23 PM

I agree with hanaldo, that internal bladder moulding would be the optimal route to go.

However I think those are made positive over a core. First the tube diameter gets bigger towards the knots. And from the pictures it looks like it does so in quite an irregular way. Would be strange for negative moulding. Secondly the surface doesn't seem perfectly flat. Just a slight waveiness. Last, but not least, the surface is made with a carbon sleeve. It is really difficult to get an even weaving texture with a sleeve while using internal bladder moulding. In this case I would tend to say it's impossible. At least at the orthogonal end plugs.
Quite a craftsman, to get such a nice finish with positive methods. This needs practice.

+x

 

scottracing - 6/11/2018 9:15:59 PM

it could be a soluble core, have a look at the stratasys range of materials like SR130. The core is 3d printed,wrapped in PTFE tape then the carbon and placed into a clamshell tool.
Once the part is cured you wash it out and you have a tooled surface.

Looks a very nicely made part though, i wouldnt be surprised if the laminator works in top end motorsport.

+x

 

scottracing - 6/11/2018 9:15:59 PM

it could be a soluble core, have a look at the stratasys range of materials like SR130. The core is 3d printed,wrapped in PTFE tape then the carbon and placed into a clamshell tool.
Once the part is cured you wash it out and you have a tooled surface.

Looks a very nicely made part though, i wouldnt be surprised if the laminator works in top end motorsport.