Oh that's very interesting. My grandfather was a machinist and I have all his machinist school books. I've read up on last wax and sand casting and that before. It's one of those things... be neat to try at least on paper. I found a website which ... you know it was just a google result where some guy was casting in his back yard. I can imagine doing it at least...
However immediate path of least resistance first... or perhaps only.
I tried to upload my model I have to shapeways but it's in .dwg autocad format. I tried tinkercad to convert it which some suggested but it won't read the original .dwg format.
I'm sure there are some converters out there.
Instead I emailed the original author to ask if he's export it to one of the supported format using is autocad... but I'm not sure he has a long term license.
The other option is to get the 30 day trial for it ... then export it (assuming they turn this feature on... tbd)
Kind of annoying really... but autocad is the king, so they can get away with it.
(I'm suspicious also the model is highly detailed and will need to modified to make it print worthy -- tbd)
