Successfully Building Multi Part Molds 

Great job, as always. Thanks again, Milo and Smooth-On.

Would love to see a video of you making a multi part mold of an object that has an inner mushroom shaped hole with a water soluble core, basically insert molding. I'm into action figures and I tear them apart to see how they were made, but never seen the molding process of these parts. Awesome video also, enjoyed it!

Great content Milo! Did you actually mean to indicate you found skeletons in your closet? :-O

Thank you for great information i learned a lot hoping it will contiune in future good bye

Milo is awesome!! Always learn something new (or two) through him 😎👍🏼👍🏼

In order to estimate the amount of Rubber, pour in water from a graduated pitcher. That will give it to you in a fairly close amount.

Masterclass!

Great video Milo, I did learn a lot here..........this has changed my way of thinking for future mold making and resin casting................and thank you for giving the material #'s for the rubber and resins........keep up the great work.

Have you got a video of making that glass

WONDERFUL TIPS . I Love it thanks Milo and Smooth On . Could it be posible to see how you do the skeleton mold.☺

This is a great guide to making multi-piece molds 👌. I learn a lot from your tutorials. I would like you to make more videos explaining the manufacture of complex molds such as the skeleton or the camera that Milo showed. Thanks for sharing Smmoth-on 👏👏👏

1. Awesome video! 2. I'm new to mold making. Ultimately, I want to produce a bunch of plaster molds from a single silicone mold for mass producing slip casts. I am using a 3D resin printer to print my designs, but when I attempt to make a silicone mold of that, the silicone touching the 3D printed object never cures; it stays goopy. How should I go about this?

Thank you, I always get good ideas for my work.

Anyone else find 1.75x-2x playback speed _just right?_

Well presented answers all questions any amateur mold makers would like to know.

Can mold star 15 slow be colored with so strong pigments?

suggestion : That problem you explain at 17:06 could be solved (could be solved??? , well, at least this is what I think) could be solved changing a bit the split line (or split plane?) so the silicone embraces the column a tiny little bit. So, once the clay is removed, in case the column goes off the mould, you push the column against the mould and it grabs the column. At least this works in my mind, I am not positive if this hack would work in real life, but i think so. In order to create a robust edge for the mould, you would need to do a split plane, a bit more complex. It would not be just a simple plane, otherwise the resulting silicone would have an edge at 45 degrees, less LESS robust than the one you have done at 135 degrees, or 90 degrees if the corners of the column are rounded. Let's say the split plane is 5 milimetres (or a fifth of an inch) under the normal, the clay would need . . . like some sort of extra wave lifting up and touching all the silhouette of the column. The easiest way of making this wave (Not sure but I think so) is putting exactly the same amount of clay you have put (not 5 mm under) you take off the column for a moment, and you carve that complex split plane I have described. You start with the knife (or cutter) at 45 degrees doing the silhouette of the column (in theory, the depth of this cut would be 7 mm [7.07 . . . ], anyway, a cut, that's it) . And later you take off more clay. You get rid of these 5 mm I have told. This sort of river-bed you are about to carve (with 5 mm depth) only would need to be one inch (or even half inch) wide, rather than wasting time, taking off a big amount of clay. Once you've carved that crocodile pit (sorry, the proper analogy came to my mind too late) you put again the column on the clay (hoping it will not float under the silicone) and that is it. By the way, talking about floating : Instead of surrounding the entire silhouette of the column with this crocodile pit, we can carve only 2/3 of it. On these silhouette sections with no pit (the four corners, for example), we add more clay, retaining the column in order to avoid floating. These four extra bits of clay, would have the same form (or the same section view) of the crocodile pit, but in negative.

How do create a mold that I can embed pieces of wood into for a support structure? Is it best to call one of the stores to discuss my idea with someone?

I'd LOVE to know how to create a mold for and how to roto-cast antlers and horns.

how to make a silicone straw

Milo you have very minimal skeletons in your closet, you've lived your life right man! 😁

And a core mold???

That extra puck as a razor blade holder is actually a cool idea! Whenever I pour my ultracal I save the leftover pucks as paperweights :)

Holy crap... what an outstanding walkthrough. Thank you so much for this!! As a newbie (haven't even made one) mold maker this is gold!!!

what is that clay called ?is the clay is reusable ? what silicon did you use here ? what release agent i can use when i cast resin epoxy ? thanks

How do you make Smooth on to make mold-star 15 low molds of different colors please? Thank you

Have you got videos for any of the other things he had on the table at first and if so where?

how can you remove silicone from a void that really locks? for example a vase that curves like the liter U? multi-part void?

Can you make a mold for me?