I’ve been working for the past couple weeks getting things setup to do some lost resin casting (primarily for the detail that can be achieved).
I’ll be posting a video on this but man… just for starters is it a lot of work compared to printing and sintering. I’ll be comparing the results and steps side by side so others can see what I went through, but I’ve yet to achieve success with lost investment yet.
To put this in perspective my steps for both techniques
- obtain model and design a cast tree
- this step could be done by hand with wax sticks and a wax meter, but I want as smooth and consistent process as possible
- cleanup supports (with resin there are a lot with the tree)
- paint and let dry with some plaster of Paris
- find a steel vessel big enough for the tree and pour in plaster to cover tree
- let cure / dry (my first try took days…)
- burnout resin/wax
- melt metal and heat mould
- pour metal and let cool
- quench investment cast and remove plaster
- cut models from tree and individually clean and polish
- print my thing (use idex printer with pla supports)
- remove supports
- put in refractory with my metal putty and sinter carbon and wrap (a few minutes to do)
- sinter on kiln schedule
- remove and polish. Done… that’s its.
Definitely not saying there’s no use for casting, because there are plenty of good benefits (for me the detail), but I have to say… as someone trying to compare both and starting from square one in both techniques, I really have to say how much less there is to do to get over the finish line.