StopMotionAnimation.com

taking one frame at a time since 1999

I've made this paw out of clay and baked it. Now I would like to make a mold from it to create a replica using silicone. I bought some Rebound 25 to make the mold but I'm wondering if that's the best product to use especially since the paw is small. Any suggestions would be helpful. Thanks.

Views: 536

Attachments:

Reply to This

Replies to This Discussion

Ideally you should follow the practice of casting something flexible in a rigid mould and vice versa. So you would not normally use a silicone mould to cast silicone. You could re-sculpt your hand and not bake it, then cast it in a plaster 2 part mould, and then create your final piece in silicone in the mould.

It is not impossible to use silicone moulds for silicone, but you need to make sure you have enough mould release on all surfaces and that the silicones you are using are compatible, i.e. do not try to cast platinum silicone in a tin silicone mould.

Thank you Simon.

Simon Tytherleigh said:

Ideally you should follow the practice of casting something flexible in a rigid mould and vice versa. So you would not normally use a silicone mould to cast silicone. You could re-sculpt your hand and not bake it, then cast it in a plaster 2 part mould, and then create your final piece in silicone in the mould.

It is not impossible to use silicone moulds for silicone, but you need to make sure you have enough mould release on all surfaces and that the silicones you are using are compatible, i.e. do not try to cast platinum silicone in a tin silicone mould.

yeah i agree with simon- this would be a very easy mold to make with plaster/hydrocal. 

i do however use rubber molds for pulling dragon skin pieces all the time. Mainly this is to benefit from using a product like sorta clear, where you pour the mold in one block, then cut it in half to save time. And yes- you can't use enough mold release, i've also managed to destroyed some. one other tip is the degree of undercutting- with your hand sculpt, there's none. so it would be easier to manage a silicone mold. good luck 

Thank you Ri, it can be difficult to navigate all the products for making molds as well as the products for making the final piece. Not to mention finding the products themselves as most stores don't have them (thank goodness for the internet, eh?). From the videos I've watched on the subject it appears to be a challenge (a fun one at least) and there's not just one way to success. I appreciate the time you (and Simon) took to answer my question.

Learn from each attempt you make, even, perhaps especially if it fails. If you get a method that works well for you, stick with it and make incremental improvements. There's a great video from Tested where they look at mould methods used by Aardman for Early Man.

Think about how you will fill the mould once you have made it. You need a big enough hole to pour silicone in, and one for air to escape, making sure there are no areas where it can be trapped. Or use the cruder method I like, which is to overfill both halves of the mould and slap it together before anything can run out too much. You still need an escape hole for the excess to come out, and will need to keep this uppermost while the stuff goes off. And you will waste more silicone this way. Aardman inject theirs, which is more complex to set up, but will use less material.

Thanks again Simon, that's some good information and I'm looking forward to seeing what I can come up with. In the mean time I picked up some 'bake and bend' sculpey and made a couple of hands with it. As you can see it worked somewhat  but I think the range of motion is a fair amount less then with latex or silicon. Still not a bad way to go in a pinch. 

Simon Tytherleigh said:

Learn from each attempt you make, even, perhaps especially if it fails. If you get a method that works well for you, stick with it and make incremental improvements. There's a great video from Tested where they look at mould methods used by Aardman for Early Man.

Think about how you will fill the mould once you have made it. You need a big enough hole to pour silicone in, and one for air to escape, making sure there are no areas where it can be trapped. Or use the cruder method I like, which is to overfill both halves of the mould and slap it together before anything can run out too much. You still need an escape hole for the excess to come out, and will need to keep this uppermost while the stuff goes off. And you will waste more silicone this way. Aardman inject theirs, which is more complex to set up, but will use less material.

Attachments:

where did you get the bake and bend stuff?  i've been looking for that for ages and can't find any!

I just happened upon it at Michaels (the hobby store).

Reply to Discussion

RSS

Website News & Tips

NEW MEMBERS

If you are new to the site, please feel free to introduce yourself on this Message Board thread.

MY PAGE
You can now customize your personal page. Go to My Page/Customize My Page.

PRIVACY
To control who sees your posts and Profile Page, go to Settings>Privacy.

MESSAGE BOARD & BLOG POSTS
If you have a question for the community, it is best to post your question on the Message Board instead of a Blog. Blogs are best for featuring your stop motion projects.

VIDEO
When posting a video, if possible, use the Embed Code instead of the URL. Your video will be a larger, more viewable size.

Stopmo Jam HALLOWEEN!

MESSAGE BOARD CATEGORIES

If you have a question or are looking for answers, you'll find a wealth of information here on the Message Board.

BEGINNERS a good place to start
ANIMATOR TALK experienced animators
YOUR STOPMO FILM PROJECT what r u working on?
STORY script, storyboarding and storyreel
ANIMATION TOOLS
 what's a surface gage?
STOP MOTION & COMPUTERS Dragonframe and VFX
CAMERA & STAGE camera, lighting and moco rigs
SOUND lip-sync, sound effects and music 
ARMATURES ball & socket and wire 
MACHINE SHOP metalwork tool & talk 
SCULPTING sculpture information and advice 
HAIR & COSTUME materials and technique 
CASTING
 foam, silicone and resin 
CLAY clay puppet construction 
GENERAL PUPPET MAKING 
other puppet fab issues
STOP MOTION SETS set design and construction
MODEL DEPARTMENT
 miniature prop discussion

and even more...
MATTE PAINTINGS
GENERAL SPECIAL EFFECTS 
STOP MOTION FILM DISCUSSION 
FAVORITE STOP MOTION CHARACTERS
PRO ANIMATOR DISCUSSION
FILM FESTIVALS AND EVENTS 
ANIMATION SCHOOLS 
STOP MOTION BOOKS 
STOP MOTION ON VIDEO 
WORK OPPORTUNITIES

FOR SALE 
CHAT BOARD 

WEBSITE NEWS AND FEEDBACK

SMA.com on YouTube

New NMBC Book!

© 2021   Created by Anthony Scott.   Powered by

Badges  |  Report an Issue  |  Terms of Service

.xg_widget_forum_index_index .xg_column.xg_span-7.xg_last {display:none;} .xg_widget_forum_topic_listForCategory .xg_column.xg_span-7.xg_last {display:none;} .xg_widget_forum_topic_show .xg_column.xg_span-7.xg_last {display:none;}