Hey Jason - For one-off stuff, that'll be a bit expensive.. if it's just wet layed carbon, you should contact a bodyshop or boat repair place. You just need to make a form / mold out of fibreglass, which is usually wrapped onto / around a pattern, whether the pattern is made of wood or whatever, that's a task in itself. Once you have a fibreglass mold, you can use it for a wet lay-up of carbon fibre, and you can probably do this yourself, I can give you some tips. You don't need any special tools for cold wet lays. Most of the task and cost will be making the form and the mold.
The most expensive method is using an autoclave (computer controlled curing and vacuum), pre-preg carbon (expensive stuff since Boeing etc.. is consuming most of the world resources of carbon fibre lately), but no sense talking about that... it's big bucks, which we do at work, you can fit an entire car in our autoclave at work.. and quality molds are made of carbon fire and ren board patterns (very expensive material).
Preg-preg autoclave carbon looks much better than cold wet lay, and wet lay tends to be a bit yellowish, and definitely weaker since it's not compressed under heat & vacuum during the curing process.
