On 08/05/2019 20:33, Bill Wright wrote:
On 08/05/2019 17:14, Peter Parry wrote:
On Wed, 8 May 2019 14:09:09 +0100, Bill Wright
wrote:

I've been making some components using glass fibre, finished with car
body filler. They are caps, covers, and adaptors for various sizes of
tube. They will be installed outside so must be durable, waterproof, and
quite tough. The ones I've made are entirely satisfactory except for one
thing: it takes too long to make them. So, I was wondering about 3D
printing. Are the products from these tough, waterproof, and UV
resistant?

Of the two common printing plastics PLA is tough and waterproof but
most certainly not UV resistant, it is biodegradable.Â* Polycarbonate
is tough and stable but is more idly to print with and requires a
higher printing temperature and a heated build plate for best results.
It is also very smelly when printing.

Thanks for that.

Bill

You can paint PLA to protect it from UV, it will only last a few years
if you don't.