sanekn
100+ Head-Fier
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Thanks man!
I'm having trouble using agar-agar powder to produce a mold.
I'm using it as a substitute for Knox in a 1:1 ratio.
I've been using about 45g of AgarAgar + 240 ml of water, this yields a mold that falls apart upon the slightest pressure.
Adding too much AgarAgar makes the mold very cloudy and seems to prevent curing of the UV gel.
Anyone else got some other recipe for AgarAgar or is gelatin really the way to go?
I suspect you still need to add glycerin. I might start with a similar amount as ShilohJ's recipe (halfway down post#4719) for the gelatin. That's just speculation on my part, I haven't tried it.
This may be a good resource:
http://green-plastics.net/posts/39/how-to-make-algae-bioplastic/
Here a nice article about what the glycerin is doing:
http://green-plastics.net/posts/366/add-glycerine-vinegar-gelatin/
Sometimes the Green Plastics website can be cantankerous. Probably time for them to seek out a new host.
-GEO
So I bought 2 CI-22955's but one of them has pretty terrible sound; it's incredibly low and the low end is crackling/rattling. Anyone know how I can fix this? Really don't want to throw away $25 since this is my first BA purchase.
Video: https://www.youtube.com/watch?v=pa9rB93foP0
The gelatin is the way to go, I did several tests with the agar agar all of which failed in comparison to the gelatin so I scratched that as a viable investment material for me. There is an agar agar based duplicating gel in the iem manufacturing industry but it has additives that re-enforce it's strength and I could not get the cloudiness to go away when adding substrates to the mix. Agar agar is super concentrated meaning you cannot substitute the gelatin with agar agar following the same recipe as the one I posted for gelatin, in fact it would be closer to 1/4 of the amount of agar agar compared to gelatin per 350ml hot water. I hope this helps.
Thank you for the links above, I may give it one more go with the agar-gelatin mix using sorbitol and the 1% glycerol.
I purchased clear ballistics gel cubes from Clear Ballistics which are very easy to melt down and reform multiple times. It was $10 plus shipping for a 1 lb bag of cubes. You would have to be making A LOT of molds to go through the full supply.
After some trial and error, and some helpful tips from others on this thread, I was able to get some very good clear, bubble free, molds.
v1 vs v2
They also have smaller samples you can buy (limit of 2) if you only plan to make one set of molds. It looks like two samples might just be big enough.
I purchased clear ballistics gel cubes from Clear Ballistics which are very easy to melt down and reform multiple times. It was $10 plus shipping for a 1 lb bag of cubes. You would have to be making A LOT of molds to go through the full supply.
After some trial and error, and some helpful tips from others on this thread, I was able to get some very good clear, bubble free, molds.
v1 vs v2
They also have smaller samples you can buy (limit of 2) if you only plan to make one set of molds. It looks like two samples might just be big enough.