By sjmn - 9/24/2018 3:45:31 PM
Hey folks,
I had a first attempt at carbon fibre skinning at the weekend and everything seems to have gone really smoothly apart from one issue.
We were skinning plastic parts, with a fairly rough surface to begin with, but still did a bit of a key with 120 grit sandpaper to be safe. I'm not sure exactly what type of plastic the parts were made from. At first, the basecoat went on really well but within a few seconds it started to split a bit, as if it was being repelled from the surface. For the majority of the part it didn't cause any problems but had prevented the carbon fibre from adhering properly to the part completely. The majority of the part is absolutely fine but there are little segments that didn't stick down as well. The fibre is being wrapped around the surface entirely, so I'm not worried about it delaminating and detaching completely, and the epoxy layers on top have applied really well. The issue came where the joins of the cloth didn't adhere well so it's not quite as neat as it could be.
Unfortunately , we don't have much scope for using different types of parts - this is just a bit of fun, rather than for commercial sales or anything, but getting a perfectly finished part would be very satisfying.
Is there any sort of primer or pre basecoat that we might be able to use that the basecoat could then adhere to?
Thanks!
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By sjmn - 9/25/2018 4:18:04 PM
Thanks for your replies.
There is a very good chance I didn't do enough prep work on the surface of the parts so when I attempt it next time I'll be sure to go a bit overboard with my surface prep.
For the vast majority of it, it was no problem not having full coverage. Of course, the bit where it did matter happened to be where I was attempting to have the fabric join together. This meant that it didn't sit completely flat so when I sanded it down it did leave a bit of a gap, which then meant the pale plastic is a bit visible.
It's all good practice though and I'm really enjoying working with it. It's not quite as bad as I thought it might be!
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