Talk Composites - The Forum for Advanced Composites

Material thicknesses

http://www.talkcomposites.com/Topic2777.aspx

By ajb100 - 9/8/2012 8:19:22 PM

I'm currently working on a project of making a CF roof skin as a replacement to the original. The original will be cut out leaving a flange around the edge and the CF one will be bonded to this flange.

This is the first time I've made a part which needs to fit over something, they've all been replacement parts until now so I've no experience in having to work out material offsets etc for the mould

The current plan is to to use wax sheet over the original roof, smooth out the joins with aluminium tape, flat back any high spots, then have a paint layer over for the glossy finish for the mould to be taken off. Can anyone see an issue with that?

The second thing is what thickness sheet wax will I need? Due to its width, I'll have to use 200g 1.25m rolls. There will be 5 layers of this at the edges were its on the flange so it's this thickness I need to know, even roughly as a guide.

Thanks in advance
By neilb - 9/11/2012 1:15:05 PM

the wax sheet will work to give you a part to fit over the edges of the original roof, i think it would be a lot easier to mould the roof then replace the whole thing.

the returned edge along the gutter would really be in the way for either way, would have been nice to keep it though, maybe just bent it out of the way then tapped it back with a hammer and dolly.

good luck with it dude, i've seen it done on mk4 escorts