Im in the process of doing just that. I struggle to get photos posted on here but no problem on Facebook cyclekarts , hope this link will work. You're very welcome to come and have a look or give me a call.
GBhttps://www.facebook.com/groups/CycleKartsGB/?multi_permalinks=4262655597173091&notif_id=1638122230854973&notif_t=feedback_reaction_generic&ref=notif

Thanks, that looks great.

When you say plaster, do you mean the stuff that you plaster walls with or is there something else.

I would be over the moon if mine turns out anywhere near as good as yours.

If it's any help, I've just been working on a nosecone buck, and will be doing the tail section and cowl in a similar manner, I used a timber frame filled roughly with foam, (squirty stuff from a can). This was shaped roughly to just below finished level, then given a skim with gyproc drywall jointing plaster. It took a couple of layers to get close to final shape, but a quick spray of paint for a guide coat soon shows where any low spots are.

I prefer the drywall to plaster as it stands and shapes very easily, the downside is that it's softer, O.K. for just putting a layer of cloth on, but I wanted to make a buck, so I have ended up with a layer of tooling gel coat to give a hard shell.

This just needs a bit of spot filling and sharpening of corners and it should be ready to take a mould, it could just take glass at the finished plaster stage,  butI just decided to make things difficult for myself and make a full mould.

[ Guests cannot view attachments ]
Peter

Plaster

Tooling gel ready for final skim of body filler

Peter

That looks really good, I am definitely going to try the GRP route for the body.

Mark

Appreciate the compliment Pete....youre not doing too bad yourself.
Nearly 50 years ago (when I was young and knew everything ) I worked in a boat yard laminating new hulls and getting the **** repair jobs. I find it hard to learn new stuff now but I'm apparently a kinesthetic learner so raking up those old skills/experience was helpful, I did forget how long things took though !