PLA melts at 400f, I think most people who do lost PLA melt it out in the same furnace they melt the aluminum in. But 400 is plenty do-able on a bbq.
I downloaded a hobbyist copy of fusion 360 5 years ago when I got my first printer. I've used it for bunches of small/medium projects and I'm decent for a hobbyist at this point. I've even done some tooling for work, and we shipped a one off custom system last week that has a part I designed.
I'm bumping against my limit with this cluster replacement, but I found the fusion community support is great. Might be worth just jumping in and messing around.
