Question about casting

I just got some resin and I was wondering how much I need to cast a headsculpt ie; how much of part a and part b do I need to mix together?

Is it a 1:10 ratio or a 1:1?

the label says volume 1:1

Then, when you mix, either mix by weight (using a postal or kitchen scale) or by volume (measuring cups) to get EXACTLY the same number of part A and part B, you do not want more of one part than the other.

A good way to figure out exactly how much you need is fill the mold with water and then dump into a cup,measure that and you will know how much you need to mix.also it is smart to always go big,if you need a half cup,mix 3 quarters.better to have to much than not enough.

Thanks guys I will try it out once I have a good mould to work with

Good luck!

Okay forgot to ask now I know how to measure it will 10ml by 10ml be enough to cast one head or will I need more? That is if I have the amounts right

Are you making the mold, or pouring resin to cast the head?

I was pouring resin to cast it but I worked it out got a quarter head with an explosion on first attempt (doh!) but got a whole head second go...umm minus a few air holes that I filled now just need to sand it smooth and starte painting. I can only get better right?

Kal El Klarc said:

I was pouring resin to cast it but I worked it out got a quarter head with an explosion on first attempt (doh!) but got a whole head second go...umm minus a few air holes that I filled now just need to sand it smooth and starte painting. I can only get better right?

Click to expand...

It does get better, each time you do it. Practice makes perfect!

steven.giunta said:

A good way to figure out exactly how much you need is fill the mold with water and then dump into a cup,measure that and you will know how much you need to mix.also it is smart to always go big,if you need a half cup,mix 3 quarters.better to have to much than not enough.

Click to expand...

Just to add, if you do fill the mold with water to measure, be sure that the mold is absolutely dry before pouring resin into it because water and resin do not mix.

Or you could use rice instead of water. Just pick all the rice back out.

For future reference what is the best thing to fill airhole gaps with?

Roll up some clean clay, it's easy to remove later.

Okay I must be having a dumb moment, but how do you mean?

Do you mean you want to fill in air hole in your cast?

I was thinking he meant something else. Oops. I think he is talking about holes in the cast.

Maybe?

Yeah holes in the cast, the clean clay is for the mould? Also what is that?

Bonus the painting is staying put and drying now, so finally something is going right with this thing lol

The clay can be used to secure the original part, so it won't move while you are pouring the silicone. Or when making a 2 part mold. To fill the holes in the casted part, I've used apoxie sculpt, mighty putty, and a few other air-drying clays. I'm sure others have more suggestions as well.

And, very glad you're happy with how the painting is coming!