Silicone Mold Making: When To Use A Two-Piece Mold. Part 1

I prefer one-piece silicone cut molds in almost every situation. But this time a two-piece mold with a precise cut line was the way to go. The simplest shapes often provide the greatest challenge to the mold maker.
Skip to the good parts:
00:00 Good Morning! It's a simple object with a complex mold solution!
01:05 When to use a two piece mold instead of a cut mold.
02:40 Hard or soft, which rubber to choose?
04:18 Pouring mold registration buttons.
07:27 Building the mold box.
10:58 Applying parting agent.
11:55 Pouring a seal coat of rubber.
14:20 Pouring the first half of the mold; filling the box.
18:05 Disassembling the parting line.
18:55 Light cleanup of flashing on the first mold half.
19:48 Testing the parting agent to be sure the rubber will not stick to itself.
20:17 Making a custom sprue and funnel.
23:00 Applying the parting agent to the 1st rubber mold half.
24:50 Attaching the sprue and vent to the model and the case.
26:46 Pouring the 2nd half of the mold.
28:11 Taking the mold apart. Did it work or did we fail?

[RobertTolone]

Here is a link to a downloadable PDF file with a list of the rubber, resins and waxes I use in my videos:

[Mavrik]

I'm not making any molds, but I'm watching just in case I do.

[msredcorvetteme]

I love that u can understand everything he says. Most people that do these videos either talk too low or u can't understand them. He also knows what he is talking about. I just found him looking for silicone mold making. I finally found someone who knows what he is talking about. Thanks Robert

[yoshi]

Really enjoyed this video. Trying to learn how to make a mold to recreate the ring posts for a 1986 WWF LJN Wrestling Superstars Bendies Cage Match Challenge Ring for a friend and this was just so incredibly informative. Really appreciate the attention to detail.

[erickvega]

please never stop Robert, NEVER!!! Keep challenging yourself. You have taught me A LOT!

[tomo]

You sir are the Bob Ross of mold making! Love your attitude

[SheenaNeil]

I don’t quite know how I got down this rabbit hole but this guy is my new favourite human. He’s so fun to watch.

If there was a job opening in a shop with this guy I’d be there!!!! What a joy it was to watch this whole process.

[chelisvaca]

Only dozed off once for like a min or two. Your a fabulous teacher!!

[tconcepts]

I just love the passion! You may be up at 2.30AM making moulds, doesn't stop me from being up at 3.00AM watching you! ; )
Actually, that's when I do my best work, in the middle of the night!

TURK

[Andrew-qobr]

Just watching one of your videos has given me a large book of information.
Your ability to show why and why not to do a particular step, and show it clearly, is a gift.
Thank you for your patience, interest, and time.

[binershock]

Thank you for keeping your mistakes in your video. It's what makes you more than a master

[eddieranson]

I can't thank you enough for your patience and visual instruction you are definitely a master and I am so appreciative thank you

[fdwaid]

Thank you Robert for your amazing explanations!
Keep up the great job!
Greetings from Iraq 🌷

[paridotwave]

You are awesome!!! Thanks for a great channel 🙏🏽👏🏽👏🏽👍🏽

[Lukeveltman]

Hey good morning, super grateful for your videos Rob! Find myself constantly referring back to them as a bit of a base source for moulding and mould making! Have a good day !

[malex]

Robert, you are so adorable and knowledgeable, like a very sweet grandpa. Loved the video and very informative. Probably the only YouTube channel that I was happy to see a commercial come up! You deserve the revenue for your content

[Lateru]

Awesome video. This has helped me understand what I need to do for a mold I will be making very soon.

[jpmodelworks]

Robert, part one of the mold making was amazing! You can think out of the box when it comes to each project. I loved how you handled my project. I’m pretty meticulous when it comes to my model work and I can see from the video, you are as well. Thank you for the care and determination you show on each project you do. I can’t wait to see part two!

[levinebette]

Love this! The buttons. The box, sliced in half. Can’t wait for next episode!

[luuuuuuuky]

Thanks for teaching, Kind regards from Mexico.