mould buliding.

M

mikesfb

Senior Member
hi guys , im looking to build some 6-9 ounce grapnell sinker moulds but am really battling to find the 8 ounce graps at shops. so i thought hey, what volume of lead is 8 ounce, 8oz is 226g. density of lead 11.34g.cm3 so volume for 8oz is 19.9cm3. so then i thought hey why not design my own sinker and have fun with the shape. so heres the question,^^.. what material can i make the model sinker out of to make mould around, substance must be workable, able to do a water density test, place in measuring jug and see how much h2o it displaces. and able to be baked so the plaster of paris can be dried properly before being sent to the foundry.

thanks in advance, first time diy guy ::S

mikesfb
 
T

tauruck

Sealiner
Go to a store that sell panel beating stuff. The guys that sell car paint.

Ask for a Kilo of the good stuff. Don't use the cheap one because you'll cry later.

It's like concrete. Get something made in the Fatherland if you can.

Easy to work, shape etc.
 
A

Andre Laas

Sealiner
Hi Tauruck

Do you have a brand name for "the good stuff"? I have been playing around with a couple of materials, but no joy so far. Last thing I tried was air drying sculpting clay....but I guess I am not much of a sculptor!

I have ordered some "dentstone" for making some experimental molds. My idea is to experiment in dentstone (cheaper), and when I am happy make proper silicone molds. The tutorial you have done for silicone mold making also works like a dream for POP molds. Hopefully I will soon have some stuff worth sharing!
 
T

tauruck

Sealiner
Critter wrote:
Hi Tauruck

Do you have a brand name for "the good stuff"? I have been playing around with a couple of materials, but no joy so far. Last thing I tried was air drying sculpting clay....but I guess I am not much of a sculptor!

I have ordered some "dentstone" for making some experimental molds. My idea is to experiment in dentstone (cheaper), and when I am happy make proper silicone molds. The tutorial you have done for silicone mold making also works like a dream for POP molds. Hopefully I will soon have some stuff worth sharing!
Click to expand...

Voschem Soft. Made by the Third Reich and available from BASF.

This product is the Berries and if you can't source it just go to the best panel beater you can find and ask where they get it.

If that fails I can send some down with the missus on her next KZN trip.
 
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