Diy frag plugs
 

Got bored and decided to make some mould for some "custom" frag plugs

Started by making 12 wax positives

http://i11.photobucket.com/albums/a1...ps2e9ae87b.jpg

Next up (after work hopefully) will be making the silicone mould with liquid silicone (3:1 silicone:paint thinner) and corn starch for a catalyst

Great idea, what will you be using to make them with? (fill the finished molds up with)

Just normal concrete

And my super secret accelerator

Corn starch?

how about fiberglass resin?

That's for the silicone

You will have to let them sit in water, changed out often, for a while to get the ph of them to come down to 8 or so. I made a batch of diy rock a few years ago using cement, crushed oyster shell and argonite (sp..?) sand. Took about 8 months of them in rubbermaid containers with downspout running into them for the ph to go from off the scales 12+ to around 8.5..
Im sure a few off them in your tank would not affect your tanks ph not sure how it would affect what your trying to frag on them, if you dont cure them.
I have read some people putting theirs in a mesh bag in back off toilet to cure.

I've got tricks to speeding that process up too. I make hundreds of frag discs a month

I would like to see more pictures of this.
How does the silicone corn starch work?