Uploaded January 2021 | Updated September 2026, 1 week ago
Roto casting urethane resin is a challenge and it's even more difficult when working with clear resins. In this video I attempt to make a snow globe using a silicone rubber mold and clear urethane resin.
Here is a list of suppliers for the rubber, resins and waxes I use in my videos:
dropbox.com/s/kz6mhmf7v5vpy7l/Material%20and%20Suppliers.pdf?dl=0
Do you have a project to suggest for the channel?
Here’s a .pdf with everything you need to know:
dropbox.com/s/pjb0l6fr7zjttec/YouTube%20Collaboration.pdf?dl=0
SKIP AHEAD TO THE GOOD PARTS
00:00 Casting a snow globe in clear resin using rotational molding.
00.52 Making the mold cradle.
10:54 Balancing the mold in the cradle.
13:22 Refining the machine setup for making the first cast,
14:57 My low tech, DIY hot box.
16:08 Weighing the original model to determine how much resin to mix for the first casting.
17:02 Pouring the first casting.
17:25 S pinning the mold on the rotocaster.
18:44 First cast is removed from the mold. How did we do?
20:54 Casting FAIL! I analyze what went wrong and how to fix it.
22:46 Some changes to the rotation machine and a new strategy for pouring.
25:57 Weighing out the second resin pour.
27:34 Removing bubbles from the resin with the vacuum chamber.
29:29 Pouring the second casting. The resin is hot!
30:06 Spinning the second casting.
33:33 Evaluating the second casting.
34:33 DISASTER! This casting is worse than the first!
34:53 Evaluating what went wrong.
37:03 To be continued...
Roto casting urethane resin is a challenge and it's even more difficult when working with clear resins. In this video I attempt to make a snow globe using a silicone rubber mold and clear urethane resin.
Here is a list of suppliers for the rubber, resins and waxes I use in my videos:
dropbox.com/s/kz6mhmf7v5vpy7l/Material%20and%20Suppliers.pdf?dl=0
Do you have a project to suggest for the channel?
Here’s a .pdf with everything you need to know:
dropbox.com/s/pjb0l6fr7zjttec/YouTube%20Collaboration.pdf?dl=0
SKIP AHEAD TO THE GOOD PARTS
00:00 Casting a snow globe in clear resin using rotational molding.
00.52 Making the mold cradle.
10:54 Balancing the mold in the cradle.
13:22 Refining the machine setup for making the first cast,
14:57 My low tech, DIY hot box.
16:08 Weighing the original model to determine how much resin to mix for the first casting.
17:02 Pouring the first casting.
17:25 S pinning the mold on the rotocaster.
18:44 First cast is removed from the mold. How did we do?
20:54 Casting FAIL! I analyze what went wrong and how to fix it.
22:46 Some changes to the rotation machine and a new strategy for pouring.
25:57 Weighing out the second resin pour.
27:34 Removing bubbles from the resin with the vacuum chamber.
29:29 Pouring the second casting. The resin is hot!
30:06 Spinning the second casting.
33:33 Evaluating the second casting.
34:33 DISASTER! This casting is worse than the first!
34:53 Evaluating what went wrong.
37:03 To be continued...
