Why didn't I use a release agent? Your questions about [3DP + plaster casting] answered!

Answering questions from the comment section of the two casting videos!
- Why did I not use a mold release agent?
- I said "tolerance" instead of "clearance"
- Adding a draft angle
- Melting out PLA
- Concrete vs plaster?
- Better choices for the electrical setup

Forum thread: https://forum.toms3d.org/t/casting-the-on-air-sign-with-3d-printed-parts/2222?u=kojote

???? Enjoying the videos? Support my work on Patreon! https://www.patreon.com/toms3dp

???? Buying items through these affiliate links gives me a small kickback without adding any extra costs for you! All details and more links at https://toms3d.org/support-me/
Amazon [???????? ???????? ???????? ???????? ???????? ???????? ????????] http://geni.us/bKkJuy
eBay [???????? ???????? ???????? ???????? ???????? ???????? ???????? ???????? ???????? ???????? ???????? ????????] http://geni.us/eSOtG
Matterhackers [????????] https://www.matterhackers.com/?rcode=TSAN86
iGo3D [????????] https://goo.gl/ROxm6Z
Aliexpress [????????] http://s.click.aliexpress.com/e/iMB6emu

???? All my video gear https://toms3d.org/my-gear