+x

 

f1rob - 10/16/2019 8:45:28 PM

If you only want a couple as others have said prob your 3D part down on the outside, seal an release an use that as your mould.
Mark your split line an laminate one half to the line
Cover a 25/ 30mm section of the carbon on the split line with ptfe tape.
Laminate the 2nd half of the component going 20mm onto the 1st laminate.
Would be easier if you printed a solid part as the one shown has to be through bagged
Use ltm110 an you will be able to give it a low enough cure to not affect the 3D
Strip parts from 3D an post cure then join with 9394 an you have a brake duct with a lovely smooth internal surface

+x

 

Mikerw - 10/22/2019 2:00:34 PM

+x

 

f1rob - 10/16/2019 8:45:28 PM

If you only want a couple as others have said prob your 3D part down on the outside, seal an release an use that as your mould.
Mark your split line an laminate one half to the line
Cover a 25/ 30mm section of the carbon on the split line with ptfe tape.
Laminate the 2nd half of the component going 20mm onto the 1st laminate.
Would be easier if you printed a solid part as the one shown has to be through bagged
Use ltm110 an you will be able to give it a low enough cure to not affect the 3D
Strip parts from 3D an post cure then join with 9394 an you have a brake duct with a lovely smooth internal surface

 All makes sense. The more i thing about it the more it makes sense to print the inner void shape and mould around that, then maybe do the flat flange as a separate piece and bond them together..?

+x

 

Mikerw - 10/22/2019 2:00:34 PM

+x

 

f1rob - 10/16/2019 8:45:28 PM

If you only want a couple as others have said prob your 3D part down on the outside, seal an release an use that as your mould.
Mark your split line an laminate one half to the line
Cover a 25/ 30mm section of the carbon on the split line with ptfe tape.
Laminate the 2nd half of the component going 20mm onto the 1st laminate.
Would be easier if you printed a solid part as the one shown has to be through bagged
Use ltm110 an you will be able to give it a low enough cure to not affect the 3D
Strip parts from 3D an post cure then join with 9394 an you have a brake duct with a lovely smooth internal surface

 All makes sense. The more i thing about it the more it makes sense to print the inner void shape and mould around that, then maybe do the flat flange as a separate piece and bond them together..?

+x

 

AlpineCoupe - 10/24/2019 5:12:24 AM

+x

 

Mikerw - 10/22/2019 2:00:34 PM

+x

 

f1rob - 10/16/2019 8:45:28 PM

If you only want a couple as others have said prob your 3D part down on the outside, seal an release an use that as your mould.
Mark your split line an laminate one half to the line
Cover a 25/ 30mm section of the carbon on the split line with ptfe tape.
Laminate the 2nd half of the component going 20mm onto the 1st laminate.
Would be easier if you printed a solid part as the one shown has to be through bagged
Use ltm110 an you will be able to give it a low enough cure to not affect the 3D
Strip parts from 3D an post cure then join with 9394 an you have a brake duct with a lovely smooth internal surface

 All makes sense. The more i thing about it the more it makes sense to print the inner void shape and mould around that, then maybe do the flat flange as a separate piece and bond them together..?

I'm not sure how feasible it is for you to do this but I used expanding foam to fill the inside of a 3d printed part so I could use the foam as a mold. Your shape may not allow for that though in terms of getting a good release of the foam from the inside of your part. Just thought I would put the idea out there in case you can make it work.