login   |    register
Scratchbuilders!: Armor/AFV
This is a group for armor scratchbuilding questions, topics and projects.
Hosted by Mike Kirchoff
Budget Release Agent
GeneralFailure
Visit this Community
European Union
Joined: February 15, 2002
KitMaker: 2,289 posts
Armorama: 1,231 posts
Posted: Thursday, March 14, 2002 - 04:47 AM UTC
When casting resin or silicone, sometimes the master model and the silicone can stick, resulting into problems releasing the original (even breaking it).

To avoid this, you can use a release agent. This stuff comes in spray cans and costs around 10$ (and you never need a whole can, not in a lifetime !).

An alternative can be liquid hand soap. Soap, thinned with a little water (about half or less water) does the trick.



Be sure you don't smear it too thickly, or it will influence the cast surface.

Best is to add a thin coating, dry with hairdryer, apply another coating...

It can also be used to separate molds into two (or more ) components.

Here's a tip : never try this on a master you spent a whole week's work on ! Try it on something else first, so you get the hang of it...

... or use another product : try the lubricating jelly that is sold as a sexual aid. It is specially formulated not to harm rubber ! The product is cheaper than "real" release agent and it lasts a lifetime, too (if you only use it for making molds !).

Jan
sgtreef
Visit this Community
Oklahoma, United States
Joined: March 01, 2002
KitMaker: 6,042 posts
Armorama: 4,347 posts
Posted: Saturday, March 16, 2002 - 07:34 PM UTC
Good old KY lube hey. Never thought of that.
thanks there General
Cheers
cfbush2000
Visit this Community
North Dakota, United States
Joined: December 01, 2001
KitMaker: 1,796 posts
Armorama: 1,207 posts
Posted: Saturday, March 16, 2002 - 10:57 PM UTC
I've found that the best budget release agent is a trip to the hobby shop after they have had a shipment of new kits. Nothing releases my budget faster.
Sorry, I just couldn't help myself. :-) Mainly cause it's true.
Chuck
TreadHead
Visit this Community
Colorado, United States
Joined: January 12, 2002
KitMaker: 5,000 posts
Armorama: 2,868 posts
Posted: Saturday, March 16, 2002 - 11:18 PM UTC
How about a can of 'Pam' from the grocery store?

Tread.
TreadHead
Visit this Community
Colorado, United States
Joined: January 12, 2002
KitMaker: 5,000 posts
Armorama: 2,868 posts
Posted: Saturday, March 16, 2002 - 11:18 PM UTC
How about a can of 'Pam' from the grocery store?

Tread.
DerFeind
Visit this Community
United States
Joined: March 20, 2002
KitMaker: 12 posts
Armorama: 0 posts
Posted: Thursday, March 21, 2002 - 09:00 AM UTC
Like Treadhead said.. PAM It works pretty good.
GeneralFailure
Visit this Community
European Union
Joined: February 15, 2002
KitMaker: 2,289 posts
Armorama: 1,231 posts
Posted: Friday, March 22, 2002 - 04:11 AM UTC
What is PAM ?
Jan
m1garand
Visit this Community
Washington, United States
Joined: February 08, 2002
KitMaker: 1,248 posts
Armorama: 0 posts
Posted: Friday, March 22, 2002 - 04:13 AM UTC

Quoted Text

What is PAM ?
Jan



Cooking spray, non-stick
RufusLeeking
Visit this Community
Ohio, United States
Joined: January 18, 2002
KitMaker: 330 posts
Armorama: 0 posts
Posted: Friday, March 22, 2002 - 04:15 AM UTC
A non-stick cooking spray, I use 10w40 to cook with myself.
TreadHead
Visit this Community
Colorado, United States
Joined: January 12, 2002
KitMaker: 5,000 posts
Armorama: 2,868 posts
Posted: Friday, March 22, 2002 - 06:52 AM UTC

Quoted Text

What is PAM ?
Jan



No, WHO is Pam. Pam was a barrel racer I used to date after I got back.....no, just joshing.


Tread
GeneralFailure
Visit this Community
European Union
Joined: February 15, 2002
KitMaker: 2,289 posts
Armorama: 1,231 posts
Posted: Saturday, March 23, 2002 - 04:01 AM UTC

LOL ! Cooking Spray ! What a truly American invention ! :-)

Whats wrong with butter ? Olive oil ... ? Then again, the 10w40 solution sounds like an attractive idea cooking too... Tht must be the strange flavor of our burgers when I was in the army !

I'm not sure oils are a good solution to separate silicone molds or to prevent your master model from sticking to the mold. I'd be careful they might
- chemically interfere with the silicone curing process (= bad molds)
- stick to the casts (painting problems)
... but it might work !
For some reason, I prefer the KY jelly alternative...
ponysoldier
Visit this Community
Oklahoma, United States
Joined: March 13, 2002
KitMaker: 223 posts
Armorama: 110 posts
Posted: Thursday, March 28, 2002 - 12:39 PM UTC
Hey
Thanks for the tip on pam I"ll try it on my mud casting and report back.



Ponysoldier.
sgtreef
Visit this Community
Oklahoma, United States
Joined: March 01, 2002
KitMaker: 6,042 posts
Armorama: 4,347 posts
Posted: Friday, March 29, 2002 - 07:26 PM UTC
pva is also good have not used it but is recommended by people that make resin and rubber. Alumilite and dow corning

I hope this link works but this is where I get my info



http://www.dowcorning.com/FAQ/faq_search.asp?DCWS=Moldmaking&DCWSS=&ind=013&2ndlevel=" TARGET="_blank"> http://www.dowcorning.com/FAQ/faq_search.asp?DCWS=Moldmaking&DCWSS=&ind=013&2ndlevel=